alloy_rpc_types_eth/transaction/
request.rs

1//! Alloy basic Transaction Request type.
2
3use crate::{transaction::AccessList, BlobTransactionSidecar, Transaction, TransactionTrait};
4use alloy_consensus::{
5    TxEip1559, TxEip2930, TxEip4844, TxEip4844Variant, TxEip4844WithSidecar, TxEip7702, TxEnvelope,
6    TxLegacy, TxType, Typed2718, TypedTransaction,
7};
8use alloy_eips::eip7702::SignedAuthorization;
9use alloy_network_primitives::{TransactionBuilder4844, TransactionBuilder7702};
10use alloy_primitives::{Address, Bytes, ChainId, TxKind, B256, U256};
11use core::hash::Hash;
12
13use alloc::{
14    string::{String, ToString},
15    vec,
16    vec::Vec,
17};
18use alloy_consensus::transaction::Recovered;
19
20/// Represents _all_ transaction requests to/from RPC.
21#[derive(Clone, Debug, Default, PartialEq, Eq, Hash)]
22#[cfg_attr(any(test, feature = "arbitrary"), derive(arbitrary::Arbitrary))]
23#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
24#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
25#[doc(alias = "TxRequest")]
26pub struct TransactionRequest {
27    /// The address of the transaction author.
28    #[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
29    pub from: Option<Address>,
30    /// The destination address of the transaction.
31    #[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
32    pub to: Option<TxKind>,
33    /// The legacy gas price.
34    #[cfg_attr(
35        feature = "serde",
36        serde(
37            default,
38            skip_serializing_if = "Option::is_none",
39            with = "alloy_serde::quantity::opt"
40        )
41    )]
42    pub gas_price: Option<u128>,
43    /// The max base fee per gas the sender is willing to pay.
44    #[cfg_attr(
45        feature = "serde",
46        serde(
47            default,
48            skip_serializing_if = "Option::is_none",
49            with = "alloy_serde::quantity::opt"
50        )
51    )]
52    pub max_fee_per_gas: Option<u128>,
53    /// The max priority fee per gas the sender is willing to pay, also called the miner tip.
54    #[cfg_attr(
55        feature = "serde",
56        serde(
57            default,
58            skip_serializing_if = "Option::is_none",
59            with = "alloy_serde::quantity::opt"
60        )
61    )]
62    pub max_priority_fee_per_gas: Option<u128>,
63    /// The max fee per blob gas for EIP-4844 blob transactions.
64    #[cfg_attr(
65        feature = "serde",
66        serde(
67            default,
68            skip_serializing_if = "Option::is_none",
69            with = "alloy_serde::quantity::opt"
70        )
71    )]
72    pub max_fee_per_blob_gas: Option<u128>,
73    /// The gas limit for the transaction.
74    #[cfg_attr(
75        feature = "serde",
76        serde(
77            default,
78            skip_serializing_if = "Option::is_none",
79            with = "alloy_serde::quantity::opt"
80        )
81    )]
82    pub gas: Option<u64>,
83    /// The value transferred in the transaction, in wei.
84    #[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
85    pub value: Option<U256>,
86    /// Transaction data.
87    #[cfg_attr(feature = "serde", serde(default, flatten))]
88    pub input: TransactionInput,
89    /// The nonce of the transaction.
90    #[cfg_attr(
91        feature = "serde",
92        serde(
93            default,
94            skip_serializing_if = "Option::is_none",
95            with = "alloy_serde::quantity::opt"
96        )
97    )]
98    pub nonce: Option<u64>,
99    /// The chain ID for the transaction.
100    #[cfg_attr(
101        feature = "serde",
102        serde(
103            default,
104            skip_serializing_if = "Option::is_none",
105            with = "alloy_serde::quantity::opt"
106        )
107    )]
108    pub chain_id: Option<ChainId>,
109    /// An EIP-2930 access list, which lowers cost for accessing accounts and storages in the list. See [EIP-2930](https://eips.ethereum.org/EIPS/eip-2930) for more information.
110    #[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
111    pub access_list: Option<AccessList>,
112    /// The EIP-2718 transaction type. See [EIP-2718](https://eips.ethereum.org/EIPS/eip-2718) for more information.
113    #[cfg_attr(
114        feature = "serde",
115        serde(
116            default,
117            rename = "type",
118            skip_serializing_if = "Option::is_none",
119            with = "alloy_serde::quantity::opt"
120        )
121    )]
122    #[doc(alias = "tx_type")]
123    pub transaction_type: Option<u8>,
124    /// Blob versioned hashes for EIP-4844 transactions.
125    #[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
126    pub blob_versioned_hashes: Option<Vec<B256>>,
127    /// Blob sidecar for EIP-4844 transactions.
128    #[cfg_attr(
129        feature = "serde",
130        serde(default, flatten, skip_serializing_if = "Option::is_none")
131    )]
132    pub sidecar: Option<BlobTransactionSidecar>,
133    /// Authorization list for EIP-7702 transactions.
134    #[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
135    pub authorization_list: Option<Vec<SignedAuthorization>>,
136}
137
138impl TransactionRequest {
139    /// Sets the `from` field in the call to the provided address
140    #[inline]
141    pub const fn from(mut self, from: Address) -> Self {
142        self.from = Some(from);
143        self
144    }
145
146    /// Initializes the [`TransactionRequest`] with the provided transaction.
147    ///
148    /// Note: This leaves the `from` field empty.
149    pub fn from_transaction<T: TransactionTrait>(tx: T) -> Self {
150        let to = Some(tx.to().into());
151        let gas = tx.gas_limit();
152        let value = tx.value();
153        let input = tx.input().clone();
154        let nonce = tx.nonce();
155        let chain_id = tx.chain_id();
156        let access_list = tx.access_list().cloned();
157        let max_fee_per_blob_gas = tx.max_fee_per_blob_gas();
158        let authorization_list = tx.authorization_list().map(|l| l.to_vec());
159        let blob_versioned_hashes = tx.blob_versioned_hashes().map(Vec::from);
160        let tx_type = tx.ty();
161
162        // fees depending on the transaction type
163        let (gas_price, max_fee_per_gas) = if tx.is_dynamic_fee() {
164            (None, Some(tx.max_fee_per_gas()))
165        } else {
166            (Some(tx.max_fee_per_gas()), None)
167        };
168        let max_priority_fee_per_gas = tx.max_priority_fee_per_gas();
169
170        Self {
171            from: None,
172            to,
173            gas_price,
174            max_fee_per_gas,
175            max_priority_fee_per_gas,
176            gas: Some(gas),
177            value: Some(value),
178            input: TransactionInput::new(input),
179            nonce: Some(nonce),
180            chain_id,
181            access_list,
182            max_fee_per_blob_gas,
183            blob_versioned_hashes,
184            transaction_type: Some(tx_type),
185            sidecar: None,
186            authorization_list,
187        }
188    }
189
190    /// Initializes the [`TransactionRequest`] with the provided transaction and sender.
191    pub fn from_recovered_transaction<T: TransactionTrait>(tx: Recovered<T>) -> Self {
192        let (tx, from) = tx.into_parts();
193        Self::from_transaction(tx).from(from)
194    }
195
196    /// Initializes the [`TransactionRequest`] with the provided transaction and sender.
197    pub fn from_transaction_with_sender<T: TransactionTrait>(tx: T, from: Address) -> Self {
198        Self::from_transaction(tx).from(from)
199    }
200
201    /// Sets the transactions type for the transactions.
202    #[doc(alias = "tx_type")]
203    pub const fn transaction_type(mut self, transaction_type: u8) -> Self {
204        self.transaction_type = Some(transaction_type);
205        self
206    }
207
208    /// Sets the gas limit for the transaction.
209    pub const fn gas_limit(mut self, gas_limit: u64) -> Self {
210        self.gas = Some(gas_limit);
211        self
212    }
213
214    /// Sets the nonce for the transaction.
215    pub const fn nonce(mut self, nonce: u64) -> Self {
216        self.nonce = Some(nonce);
217        self
218    }
219
220    /// Sets the maximum fee per gas for the transaction.
221    pub const fn max_fee_per_gas(mut self, max_fee_per_gas: u128) -> Self {
222        self.max_fee_per_gas = Some(max_fee_per_gas);
223        self
224    }
225
226    /// Sets the maximum priority fee per gas for the transaction.
227    pub const fn max_priority_fee_per_gas(mut self, max_priority_fee_per_gas: u128) -> Self {
228        self.max_priority_fee_per_gas = Some(max_priority_fee_per_gas);
229        self
230    }
231
232    /// Sets the maximum fee per blob gas for the transaction.
233    pub const fn max_fee_per_blob_gas(mut self, max_fee_per_blob_gas: u128) -> Self {
234        self.max_fee_per_blob_gas = Some(max_fee_per_blob_gas);
235        self
236    }
237
238    /// Sets the recipient address for the transaction.
239    #[inline]
240    pub const fn to(mut self, to: Address) -> Self {
241        self.to = Some(TxKind::Call(to));
242        self
243    }
244
245    /// Sets the value (amount) for the transaction.
246    pub const fn value(mut self, value: U256) -> Self {
247        self.value = Some(value);
248        self
249    }
250
251    /// Sets the access list for the transaction.
252    pub fn access_list(mut self, access_list: AccessList) -> Self {
253        self.access_list = Some(access_list);
254        self
255    }
256
257    /// Sets the input data for the transaction.
258    ///
259    /// This can be used to set both `input` and the `data` field, because some chains or services
260    /// still expect of the deprecated `data` field
261    ///
262    /// ```
263    /// use alloy_rpc_types_eth::{TransactionInput, TransactionRequest};
264    /// let req = TransactionRequest::default().input(TransactionInput::both(b"00".into()));
265    /// ```
266    pub fn input(mut self, input: TransactionInput) -> Self {
267        self.input = input;
268        self
269    }
270
271    /// Ensures that if either `input` or `data` is set, the `input` field contains the value.
272    ///
273    /// This removes `data` the data field.
274    pub fn normalize_input(&mut self) {
275        self.input.normalize_input()
276    }
277
278    /// Consumes the type and returns it with [`Self::normalize_input`] applied
279    pub fn normalized_input(mut self) -> Self {
280        self.normalize_input();
281        self
282    }
283
284    /// Ensures that if either `data` or `input` is set, the `data` field contains the value.
285    ///
286    /// This removes `input` the data field.
287    pub fn normalize_data(&mut self) {
288        self.input.normalize_data();
289    }
290
291    /// Consumes the type and returns it with [`Self::normalize_data`] applied
292    pub fn normalized_data(mut self) -> Self {
293        self.normalize_data();
294        self
295    }
296
297    /// If only one field is set, this also sets the other field by with that value.
298    ///
299    /// This is a noop if both fields are already set.
300    pub fn set_input_and_data(&mut self) {
301        self.input.set_both();
302    }
303
304    /// Consumes the type and returns it with [`Self::set_input_and_data`] applied.
305    pub fn with_input_and_data(mut self) -> Self {
306        self.set_input_and_data();
307        self
308    }
309
310    /// Returns the configured fee cap, if any.
311    ///
312    /// The returns `gas_price` (legacy) if set or `max_fee_per_gas` (EIP1559)
313    #[inline]
314    pub fn fee_cap(&self) -> Option<u128> {
315        self.gas_price.or(self.max_fee_per_gas)
316    }
317
318    /// Returns true if _any_ of the EIP-4844 fields are set:
319    /// - blob sidecar
320    /// - blob versioned hashes
321    /// - max fee per blob gas
322    pub const fn has_eip4844_fields(&self) -> bool {
323        self.sidecar.is_some()
324            || self.blob_versioned_hashes.is_some()
325            || self.max_fee_per_blob_gas.is_some()
326    }
327
328    /// Returns true if _any_ of the EIP-1559 fee fields are set:
329    /// - max fee per gas
330    /// - max priority fee per gas
331    pub const fn has_eip1559_fields(&self) -> bool {
332        self.max_fee_per_gas.is_some() || self.max_priority_fee_per_gas.is_some()
333    }
334
335    /// Populate the `blob_versioned_hashes` key, if a sidecar exists. No
336    /// effect otherwise.
337    pub fn populate_blob_hashes(&mut self) {
338        if let Some(sidecar) = self.sidecar.as_ref() {
339            self.blob_versioned_hashes = Some(sidecar.versioned_hashes().collect())
340        }
341    }
342
343    /// Gets invalid fields for all transaction types
344    pub fn get_invalid_common_fields(&self) -> Vec<&'static str> {
345        let mut errors = vec![];
346
347        if self.nonce.is_none() {
348            errors.push("nonce");
349        }
350
351        if self.gas.is_none() {
352            errors.push("gas_limit");
353        }
354
355        errors
356    }
357
358    /// Gets invalid fields for EIP-1559 transaction type
359    pub fn get_invalid_1559_fields(&self) -> Vec<&'static str> {
360        let mut errors = vec![];
361
362        if self.max_priority_fee_per_gas.is_none() {
363            errors.push("max_priority_fee_per_gas");
364        }
365
366        if self.max_fee_per_gas.is_none() {
367            errors.push("max_fee_per_gas");
368        }
369
370        errors
371    }
372
373    /// Build a legacy transaction.
374    ///
375    /// Returns an error if required fields are missing.
376    /// Use `complete_legacy` to check if the request can be built.
377    fn build_legacy(self) -> Result<TxLegacy, &'static str> {
378        let checked_to = self.to.ok_or("Missing 'to' field for legacy transaction.")?;
379
380        Ok(TxLegacy {
381            chain_id: self.chain_id,
382            nonce: self.nonce.ok_or("Missing 'nonce' field for legacy transaction.")?,
383            gas_price: self.gas_price.ok_or("Missing 'gas_price' for legacy transaction.")?,
384            gas_limit: self.gas.ok_or("Missing 'gas_limit' for legacy transaction.")?,
385            to: checked_to,
386            value: self.value.unwrap_or_default(),
387            input: self.input.into_input().unwrap_or_default(),
388        })
389    }
390
391    /// Build an EIP-1559 transaction.
392    ///
393    /// Returns ane error if required fields are missing. Use `complete_1559` to check if the
394    /// request can be built.
395    fn build_1559(self) -> Result<TxEip1559, &'static str> {
396        let checked_to = self.to.ok_or("Missing 'to' field for Eip1559 transaction.")?;
397
398        Ok(TxEip1559 {
399            chain_id: self.chain_id.unwrap_or(1),
400            nonce: self.nonce.ok_or("Missing 'nonce' field for Eip1559 transaction.")?,
401            max_priority_fee_per_gas: self
402                .max_priority_fee_per_gas
403                .ok_or("Missing 'max_priority_fee_per_gas' field for Eip1559 transaction.")?,
404            max_fee_per_gas: self
405                .max_fee_per_gas
406                .ok_or("Missing 'max_fee_per_gas' field for Eip1559 transaction.")?,
407            gas_limit: self.gas.ok_or("Missing 'gas_limit' field for Eip1559 transaction.")?,
408            to: checked_to,
409            value: self.value.unwrap_or_default(),
410            input: self.input.into_input().unwrap_or_default(),
411            access_list: self.access_list.unwrap_or_default(),
412        })
413    }
414
415    /// Build an EIP-2930 transaction.
416    ///
417    /// Returns an error if required fields are missing. Use `complete_2930` to check if the
418    /// request can be built.
419    fn build_2930(self) -> Result<TxEip2930, &'static str> {
420        let checked_to = self.to.ok_or("Missing 'to' field for Eip2930 transaction.")?;
421
422        Ok(TxEip2930 {
423            chain_id: self.chain_id.unwrap_or(1),
424            nonce: self.nonce.ok_or("Missing 'nonce' field for Eip2930 transaction.")?,
425            gas_price: self
426                .gas_price
427                .ok_or("Missing 'gas_price' field for Eip2930 transaction.")?,
428            gas_limit: self.gas.ok_or("Missing 'gas_limit' field for Eip2930 transaction.")?,
429            to: checked_to,
430            value: self.value.unwrap_or_default(),
431            input: self.input.into_input().unwrap_or_default(),
432            access_list: self.access_list.unwrap_or_default(),
433        })
434    }
435
436    /// Build an EIP-4844 transaction variant - either with or without sidecar.
437    ///
438    /// Returns an error if required fields are missing. Use `complete_4844` to check if the
439    /// request can be built.
440    fn build_4844_variant(self) -> Result<TxEip4844Variant, &'static str> {
441        if self.sidecar.is_none() {
442            self.build_4844_without_sidecar().map(Into::into)
443        } else {
444            self.build_4844_with_sidecar().map(Into::into)
445        }
446    }
447
448    /// Build an EIP-4844 transaction without sidecar.
449    ///
450    /// Returns an error if required fields are missing. Use `complete_4844` to check if the
451    /// request can be built.
452    fn build_4844_without_sidecar(self) -> Result<TxEip4844, &'static str> {
453        let checked_to = self.to.ok_or("Missing 'to' field for Eip4844 transaction.")?;
454
455        let to_address = match checked_to {
456            TxKind::Create => return Err("The field `to` can only be of type TxKind::Call(Address). Please change it accordingly."),
457            TxKind::Call(to) => to,
458        };
459
460        Ok(TxEip4844 {
461            chain_id: self.chain_id.unwrap_or(1),
462            nonce: self.nonce.ok_or("Missing 'nonce' field for Eip4844 transaction.")?,
463            gas_limit: self.gas.ok_or("Missing 'gas_limit' field for Eip4844 transaction.")?,
464            max_fee_per_gas: self
465                .max_fee_per_gas
466                .ok_or("Missing 'max_fee_per_gas' field for Eip4844 transaction.")?,
467            max_priority_fee_per_gas: self
468                .max_priority_fee_per_gas
469                .ok_or("Missing 'max_priority_fee_per_gas' field for Eip4844 transaction.")?,
470            to: to_address,
471            value: self.value.unwrap_or_default(),
472            access_list: self.access_list.unwrap_or_default(),
473            blob_versioned_hashes: self
474                .blob_versioned_hashes
475                .ok_or("Missing 'blob_versioned_hashes' field for Eip4844 transaction.")?,
476            max_fee_per_blob_gas: self
477                .max_fee_per_blob_gas
478                .ok_or("Missing 'max_fee_per_blob_gas' field for Eip4844 transaction.")?,
479            input: self.input.into_input().unwrap_or_default(),
480        })
481    }
482
483    /// Build an EIP-4844 transaction with sidecar.
484    ///
485    /// Returns an error if required fields are missing. Use `complete_4844` to check if the
486    /// request can be built.
487    fn build_4844_with_sidecar(mut self) -> Result<TxEip4844WithSidecar, &'static str> {
488        self.populate_blob_hashes();
489
490        let sidecar =
491            self.sidecar.clone().ok_or("Missing 'sidecar' field for Eip4844 transaction.")?;
492
493        Ok(TxEip4844WithSidecar { sidecar, tx: self.build_4844_without_sidecar()? })
494    }
495
496    /// Build an EIP-7702 transaction.
497    ///
498    /// # Panics
499    ///
500    /// If required fields are missing. Use `complete_7702` to check if the
501    /// request can be built.
502    fn build_7702(self) -> Result<TxEip7702, &'static str> {
503        let to_address = self.to.ok_or("Missing 'to' field for Eip7702 transaction.")?.to().copied().ok_or("The field `to` can only be of type TxKind::Call(Address). Please change it accordingly.")?;
504
505        Ok(TxEip7702 {
506            chain_id: self.chain_id.unwrap_or(1),
507            nonce: self.nonce.ok_or("Missing 'nonce' field for Eip7702 transaction.")?,
508            gas_limit: self.gas.ok_or("Missing 'gas_limit' field for Eip7702 transaction.")?,
509            max_fee_per_gas: self
510                .max_fee_per_gas
511                .ok_or("Missing 'max_fee_per_gas' field for Eip7702 transaction.")?,
512            max_priority_fee_per_gas: self
513                .max_priority_fee_per_gas
514                .ok_or("Missing 'max_priority_fee_per_gas' field for Eip7702 transaction.")?,
515            to: to_address,
516            value: self.value.unwrap_or_default(),
517            input: self.input.into_input().unwrap_or_default(),
518            access_list: self.access_list.unwrap_or_default(),
519            authorization_list: self.authorization_list.unwrap_or_default(),
520        })
521    }
522
523    /// Ensures `to` field is set to an address which is required by:
524    /// - EIP 7702
525    /// - EIP 4844
526    const fn ensure_mandatory_to(&self) -> Result<(), ()> {
527        if !matches!(self.to, Some(TxKind::Call(_))) {
528            Err(())
529        } else {
530            Ok(())
531        }
532    }
533
534    fn check_reqd_fields(&self) -> Vec<&'static str> {
535        let mut missing = Vec::with_capacity(12);
536        if self.nonce.is_none() {
537            missing.push("nonce");
538        }
539        if self.gas.is_none() {
540            missing.push("gas_limit");
541        }
542        if self.to.is_none() {
543            missing.push("to");
544        }
545        missing
546    }
547
548    fn check_legacy_fields(&self, missing: &mut Vec<&'static str>) {
549        if self.gas_price.is_none() {
550            missing.push("gas_price");
551        }
552    }
553
554    fn check_1559_fields(&self, missing: &mut Vec<&'static str>) {
555        if self.max_fee_per_gas.is_none() {
556            missing.push("max_fee_per_gas");
557        }
558        if self.max_priority_fee_per_gas.is_none() {
559            missing.push("max_priority_fee_per_gas");
560        }
561    }
562
563    /// Trim field conflicts, based on the preferred type
564    ///
565    /// This is used to ensure that the request will not be rejected by the
566    /// server due to conflicting keys, and should only be called before
567    /// submission via rpc.
568    pub fn trim_conflicting_keys(&mut self) {
569        match self.preferred_type() {
570            TxType::Legacy => {
571                self.max_fee_per_gas = None;
572                self.max_priority_fee_per_gas = None;
573                self.max_fee_per_blob_gas = None;
574                self.blob_versioned_hashes = None;
575                self.sidecar = None;
576                self.access_list = None;
577                self.authorization_list = None;
578            }
579            TxType::Eip2930 => {
580                self.max_fee_per_gas = None;
581                self.max_priority_fee_per_gas = None;
582                self.max_fee_per_blob_gas = None;
583                self.blob_versioned_hashes = None;
584                self.sidecar = None;
585                self.authorization_list = None;
586            }
587            TxType::Eip1559 => {
588                self.gas_price = None;
589                self.max_fee_per_blob_gas = None;
590                self.blob_versioned_hashes = None;
591                self.sidecar = None;
592                self.authorization_list = None;
593            }
594            TxType::Eip4844 => {
595                self.gas_price = None;
596                self.authorization_list = None;
597            }
598            TxType::Eip7702 => {
599                self.gas_price = None;
600                self.max_fee_per_blob_gas = None;
601                self.blob_versioned_hashes = None;
602                self.sidecar = None;
603            }
604        }
605    }
606
607    /// Returns the minimal transaction type this request can be converted into based on the fields
608    /// that are set.
609    ///
610    /// Compared to [`Self::preferred_type`] which is intended for building and eventually signing
611    /// transactions and which prefers [`TxType::Eip1559`] if no conflicting fields are set, this
612    /// function is intended for deriving the minimal transaction type (legacy).
613    ///
614    /// [`Self::minimal_tx_type`] is mostly relevant for the server-side, for example executing
615    /// `eth_calls` against historic state (pre [`TxType::Eip1559`]) and is used to configure the
616    /// EVM's transaction environment with the minimal settings.
617    /// Whereas [`Self::preferred_type`] is recommend for using client-side (filling a
618    /// [`TransactionRequest`] and signing the transaction [`TransactionRequest::build_typed_tx`]).
619    ///
620    /// The type is determined in the following order:
621    /// - EIP-7702 if authorization_list is set
622    /// - EIP-4844 if any EIP-4844 fields are set (sidecar, blob hashes, max blob fee)
623    /// - EIP-1559 if any EIP-1559 fee fields are set (max fee per gas, max priority fee)
624    /// - EIP-2930 if access_list is set
625    /// - Legacy otherwise
626    pub const fn minimal_tx_type(&self) -> TxType {
627        if self.authorization_list.is_some() {
628            TxType::Eip7702
629        } else if self.has_eip4844_fields() {
630            TxType::Eip4844
631        } else if self.has_eip1559_fields() {
632            TxType::Eip1559
633        } else if self.access_list.is_some() {
634            TxType::Eip2930
635        } else {
636            TxType::Legacy
637        }
638    }
639
640    /// Check this builder's preferred type, based on the fields that are set.
641    ///
642    /// Types are preferred as follows:
643    /// - EIP-7702 if authorization_list is set
644    /// - EIP-4844 if sidecar or max_blob_fee_per_gas is set
645    /// - EIP-2930 if access_list is set
646    /// - Legacy if gas_price is set and access_list is unset
647    /// - EIP-1559 in all other cases
648    pub const fn preferred_type(&self) -> TxType {
649        if self.authorization_list.is_some() {
650            TxType::Eip7702
651        } else if self.has_eip4844_fields() {
652            TxType::Eip4844
653        } else if self.access_list.is_some() && self.gas_price.is_some() {
654            TxType::Eip2930
655        } else if self.gas_price.is_some() {
656            TxType::Legacy
657        } else {
658            TxType::Eip1559
659        }
660    }
661
662    /// Check if all necessary keys are present to build a transaction.
663    ///
664    /// # Returns
665    ///
666    /// - Ok(type) if all necessary keys are present to build the preferred type.
667    /// - Err((type, missing)) if some keys are missing to build the preferred type.
668    pub fn missing_keys(&self) -> Result<TxType, (TxType, Vec<&'static str>)> {
669        let pref = self.preferred_type();
670        if let Err(missing) = match pref {
671            TxType::Legacy => self.complete_legacy(),
672            TxType::Eip2930 => self.complete_2930(),
673            TxType::Eip1559 => self.complete_1559(),
674            TxType::Eip4844 => self.complete_4844(),
675            TxType::Eip7702 => self.complete_7702(),
676        } {
677            Err((pref, missing))
678        } else {
679            Ok(pref)
680        }
681    }
682
683    /// Check if all necessary keys are present to build a 4844 transaction,
684    /// returning a list of keys that are missing.
685    ///
686    /// **NOTE:** `sidecar` must be present, even if `blob_versioned_hashes` is set.
687    pub fn complete_4844(&self) -> Result<(), Vec<&'static str>> {
688        let mut missing = self.check_reqd_fields();
689        self.check_1559_fields(&mut missing);
690
691        if self.to.is_some() && self.ensure_mandatory_to().is_err() {
692            missing.push("to");
693        }
694
695        if self.sidecar.is_none() {
696            missing.push("sidecar");
697        }
698
699        if self.max_fee_per_blob_gas.is_none() {
700            missing.push("max_fee_per_blob_gas");
701        }
702
703        if missing.is_empty() {
704            Ok(())
705        } else {
706            Err(missing)
707        }
708    }
709
710    /// Check if all necessary keys are present to build a 1559 transaction,
711    /// returning a list of keys that are missing.
712    pub fn complete_1559(&self) -> Result<(), Vec<&'static str>> {
713        let mut missing = self.check_reqd_fields();
714        self.check_1559_fields(&mut missing);
715        if missing.is_empty() {
716            Ok(())
717        } else {
718            Err(missing)
719        }
720    }
721
722    /// Check if all necessary keys are present to build a 2930 transaction,
723    /// returning a list of keys that are missing.
724    pub fn complete_2930(&self) -> Result<(), Vec<&'static str>> {
725        let mut missing = self.check_reqd_fields();
726        self.check_legacy_fields(&mut missing);
727
728        if self.access_list.is_none() {
729            missing.push("access_list");
730        }
731
732        if missing.is_empty() {
733            Ok(())
734        } else {
735            Err(missing)
736        }
737    }
738
739    /// Check if all necessary keys are present to build a 7702 transaction,
740    /// returning a list of keys that are missing.
741    pub fn complete_7702(&self) -> Result<(), Vec<&'static str>> {
742        let mut missing = self.check_reqd_fields();
743        self.check_1559_fields(&mut missing);
744
745        if self.to.is_some() && self.ensure_mandatory_to().is_err() {
746            missing.push("to");
747        }
748
749        if self.authorization_list.is_none() {
750            missing.push("authorization_list");
751        }
752
753        if missing.is_empty() {
754            Ok(())
755        } else {
756            Err(missing)
757        }
758    }
759
760    /// Check if all necessary keys are present to build a legacy transaction,
761    /// returning a list of keys that are missing.
762    pub fn complete_legacy(&self) -> Result<(), Vec<&'static str>> {
763        let mut missing = self.check_reqd_fields();
764        self.check_legacy_fields(&mut missing);
765
766        if missing.is_empty() {
767            Ok(())
768        } else {
769            Err(missing)
770        }
771    }
772
773    /// Return the tx type this request can be built as. Computed by checking
774    /// the preferred type, and then checking for completeness.
775    pub fn buildable_type(&self) -> Option<TxType> {
776        let pref = self.preferred_type();
777        match pref {
778            TxType::Legacy => self.complete_legacy().ok(),
779            TxType::Eip2930 => self.complete_2930().ok(),
780            TxType::Eip1559 => self.complete_1559().ok(),
781            TxType::Eip4844 => self.complete_4844().ok(),
782            TxType::Eip7702 => self.complete_7702().ok(),
783        }?;
784        Some(pref)
785    }
786
787    /// Build a [`TypedTransaction`]
788    ///
789    /// When `Ok(...)` is returned, the `TypedTransaction` is guaranteed to be _complete_. Which
790    /// is to say, that it is signable, and the signed version can be sent to the network.
791    pub fn build_typed_tx(self) -> Result<TypedTransaction, Self> {
792        let Some(tx_type) = self.buildable_type() else {
793            return Err(self);
794        };
795
796        Ok(match tx_type {
797            TxType::Legacy => self.build_legacy().expect("checked)").into(),
798            TxType::Eip2930 => self.build_2930().expect("checked)").into(),
799            TxType::Eip1559 => self.build_1559().expect("checked)").into(),
800            // `sidecar` is a hard requirement since this must be a _sendable_ transaction.
801            TxType::Eip4844 => self.build_4844_with_sidecar().expect("checked)").into(),
802            TxType::Eip7702 => self.build_7702().expect("checked)").into(),
803        })
804    }
805
806    /// Build a [`TypedTransaction`].
807    ///
808    /// When `Ok(...)` is returned, the `TypedTransaction` is not guaranteed to be _complete_,
809    /// only signable.
810    ///
811    /// E.g. a particular case is when the transaction is of type `Eip4844` and the `sidecar` is not
812    /// set, in this case the transaction is not _complete_, i.e. it cannot be sent to the network
813    /// once signed. However, it can still be used to calculate the signing hash, signature of
814    /// the transaction, and transaction trie hash.
815    ///
816    /// In case the requirement is to build a _complete_ transaction, use `build_typed_tx` instead.
817    pub fn build_consensus_tx(self) -> Result<TypedTransaction, BuildTransactionErr> {
818        match self.preferred_type() {
819            TxType::Legacy => self.clone().build_legacy().map(Into::into),
820            TxType::Eip2930 => self.clone().build_2930().map(Into::into),
821            TxType::Eip1559 => self.clone().build_1559().map(Into::into),
822            TxType::Eip4844 => self.clone().build_4844_variant().map(Into::into),
823            TxType::Eip7702 => self.clone().build_7702().map(Into::into),
824        }
825        .map_err(|msg| self.into_tx_err(msg))
826    }
827
828    /// Converts the transaction request into a `BuildTransactionErr` with the given message.
829    fn into_tx_err(self, message: &'static str) -> BuildTransactionErr {
830        BuildTransactionErr { tx: self, error: message.to_string() }
831    }
832}
833
834impl TransactionBuilder4844 for TransactionRequest {
835    fn max_fee_per_blob_gas(&self) -> Option<u128> {
836        self.max_fee_per_blob_gas
837    }
838
839    fn set_max_fee_per_blob_gas(&mut self, max_fee_per_blob_gas: u128) {
840        self.max_fee_per_blob_gas = Some(max_fee_per_blob_gas)
841    }
842
843    fn blob_sidecar(&self) -> Option<&BlobTransactionSidecar> {
844        self.sidecar.as_ref()
845    }
846
847    fn set_blob_sidecar(&mut self, sidecar: BlobTransactionSidecar) {
848        self.sidecar = Some(sidecar);
849        self.populate_blob_hashes();
850    }
851}
852
853impl TransactionBuilder7702 for TransactionRequest {
854    fn authorization_list(&self) -> Option<&Vec<SignedAuthorization>> {
855        self.authorization_list.as_ref()
856    }
857
858    fn set_authorization_list(&mut self, authorization_list: Vec<SignedAuthorization>) {
859        self.authorization_list = Some(authorization_list);
860    }
861}
862
863impl From<Transaction> for TransactionRequest {
864    fn from(tx: Transaction) -> Self {
865        tx.into_request()
866    }
867}
868
869impl From<TxLegacy> for TransactionRequest {
870    fn from(tx: TxLegacy) -> Self {
871        let ty = tx.ty();
872        let TxLegacy { chain_id, nonce, gas_price, gas_limit, to, value, input } = tx;
873        Self {
874            to: if let TxKind::Call(to) = to { Some(to.into()) } else { None },
875            gas_price: Some(gas_price),
876            gas: Some(gas_limit),
877            value: Some(value),
878            input: input.into(),
879            nonce: Some(nonce),
880            chain_id,
881            transaction_type: Some(ty),
882            ..Default::default()
883        }
884    }
885}
886
887impl From<TxEip2930> for TransactionRequest {
888    fn from(tx: TxEip2930) -> Self {
889        let ty = tx.ty();
890        let TxEip2930 { chain_id, nonce, gas_price, gas_limit, to, value, access_list, input } = tx;
891        Self {
892            to: if let TxKind::Call(to) = to { Some(to.into()) } else { None },
893            gas_price: Some(gas_price),
894            gas: Some(gas_limit),
895            value: Some(value),
896            input: input.into(),
897            nonce: Some(nonce),
898            chain_id: Some(chain_id),
899            access_list: Some(access_list),
900            transaction_type: Some(ty),
901            ..Default::default()
902        }
903    }
904}
905
906impl From<TxEip1559> for TransactionRequest {
907    fn from(tx: TxEip1559) -> Self {
908        let ty = tx.ty();
909        let TxEip1559 {
910            chain_id,
911            nonce,
912            gas_limit,
913            max_fee_per_gas,
914            max_priority_fee_per_gas,
915            to,
916            value,
917            access_list,
918            input,
919        } = tx;
920        Self {
921            to: if let TxKind::Call(to) = to { Some(to.into()) } else { None },
922            max_fee_per_gas: Some(max_fee_per_gas),
923            max_priority_fee_per_gas: Some(max_priority_fee_per_gas),
924            gas: Some(gas_limit),
925            value: Some(value),
926            input: input.into(),
927            nonce: Some(nonce),
928            chain_id: Some(chain_id),
929            access_list: Some(access_list),
930            transaction_type: Some(ty),
931            ..Default::default()
932        }
933    }
934}
935
936impl From<TxEip4844> for TransactionRequest {
937    fn from(tx: TxEip4844) -> Self {
938        let ty = tx.ty();
939        let TxEip4844 {
940            chain_id,
941            nonce,
942            gas_limit,
943            max_fee_per_gas,
944            max_priority_fee_per_gas,
945            to,
946            value,
947            access_list,
948            blob_versioned_hashes,
949            max_fee_per_blob_gas,
950            input,
951        } = tx;
952        Self {
953            to: Some(to.into()),
954            max_fee_per_blob_gas: Some(max_fee_per_blob_gas),
955            gas: Some(gas_limit),
956            max_fee_per_gas: Some(max_fee_per_gas),
957            max_priority_fee_per_gas: Some(max_priority_fee_per_gas),
958            value: Some(value),
959            input: input.into(),
960            nonce: Some(nonce),
961            chain_id: Some(chain_id),
962            access_list: Some(access_list),
963            blob_versioned_hashes: Some(blob_versioned_hashes),
964            transaction_type: Some(ty),
965            ..Default::default()
966        }
967    }
968}
969
970impl From<TxEip4844WithSidecar> for TransactionRequest {
971    fn from(tx: TxEip4844WithSidecar) -> Self {
972        let TxEip4844WithSidecar { tx, sidecar } = tx;
973        let mut tx: Self = tx.into();
974        tx.sidecar = Some(sidecar);
975        tx
976    }
977}
978
979impl From<TxEip4844Variant> for TransactionRequest {
980    fn from(tx: TxEip4844Variant) -> Self {
981        match tx {
982            TxEip4844Variant::TxEip4844(tx) => tx.into(),
983            TxEip4844Variant::TxEip4844WithSidecar(tx) => tx.into(),
984        }
985    }
986}
987
988impl From<TxEip7702> for TransactionRequest {
989    fn from(tx: TxEip7702) -> Self {
990        let ty = tx.ty();
991        let TxEip7702 {
992            chain_id,
993            nonce,
994            gas_limit,
995            max_fee_per_gas,
996            max_priority_fee_per_gas,
997            to,
998            value,
999            access_list,
1000            authorization_list,
1001            input,
1002        } = tx;
1003        Self {
1004            to: Some(to.into()),
1005            gas: Some(gas_limit),
1006            max_fee_per_gas: Some(max_fee_per_gas),
1007            max_priority_fee_per_gas: Some(max_priority_fee_per_gas),
1008            value: Some(value),
1009            input: input.into(),
1010            nonce: Some(nonce),
1011            chain_id: Some(chain_id),
1012            access_list: Some(access_list),
1013            authorization_list: Some(authorization_list),
1014            transaction_type: Some(ty),
1015            ..Default::default()
1016        }
1017    }
1018}
1019
1020impl From<TypedTransaction> for TransactionRequest {
1021    fn from(tx: TypedTransaction) -> Self {
1022        match tx {
1023            TypedTransaction::Legacy(tx) => tx.into(),
1024            TypedTransaction::Eip2930(tx) => tx.into(),
1025            TypedTransaction::Eip1559(tx) => tx.into(),
1026            TypedTransaction::Eip4844(tx) => tx.into(),
1027            TypedTransaction::Eip7702(tx) => tx.into(),
1028        }
1029    }
1030}
1031
1032impl From<TxEnvelope> for TransactionRequest {
1033    fn from(envelope: TxEnvelope) -> Self {
1034        match envelope {
1035            TxEnvelope::Legacy(tx) => {
1036                #[cfg(feature = "k256")]
1037                {
1038                    let from = tx.recover_signer().ok();
1039                    let tx: Self = tx.strip_signature().into();
1040                    if let Some(from) = from {
1041                        tx.from(from)
1042                    } else {
1043                        tx
1044                    }
1045                }
1046
1047                #[cfg(not(feature = "k256"))]
1048                {
1049                    tx.strip_signature().into()
1050                }
1051            }
1052            TxEnvelope::Eip2930(tx) => {
1053                #[cfg(feature = "k256")]
1054                {
1055                    let from = tx.recover_signer().ok();
1056                    let tx: Self = tx.strip_signature().into();
1057                    if let Some(from) = from {
1058                        tx.from(from)
1059                    } else {
1060                        tx
1061                    }
1062                }
1063
1064                #[cfg(not(feature = "k256"))]
1065                {
1066                    tx.strip_signature().into()
1067                }
1068            }
1069            TxEnvelope::Eip1559(tx) => {
1070                #[cfg(feature = "k256")]
1071                {
1072                    let from = tx.recover_signer().ok();
1073                    let tx: Self = tx.strip_signature().into();
1074                    if let Some(from) = from {
1075                        tx.from(from)
1076                    } else {
1077                        tx
1078                    }
1079                }
1080
1081                #[cfg(not(feature = "k256"))]
1082                {
1083                    tx.strip_signature().into()
1084                }
1085            }
1086            TxEnvelope::Eip4844(tx) => {
1087                #[cfg(feature = "k256")]
1088                {
1089                    let from = tx.recover_signer().ok();
1090                    let tx: Self = tx.strip_signature().into();
1091                    if let Some(from) = from {
1092                        tx.from(from)
1093                    } else {
1094                        tx
1095                    }
1096                }
1097
1098                #[cfg(not(feature = "k256"))]
1099                {
1100                    tx.strip_signature().into()
1101                }
1102            }
1103            TxEnvelope::Eip7702(tx) => {
1104                #[cfg(feature = "k256")]
1105                {
1106                    let from = tx.recover_signer().ok();
1107                    let tx: Self = tx.strip_signature().into();
1108                    if let Some(from) = from {
1109                        tx.from(from)
1110                    } else {
1111                        tx
1112                    }
1113                }
1114
1115                #[cfg(not(feature = "k256"))]
1116                {
1117                    tx.strip_signature().into()
1118                }
1119            }
1120        }
1121    }
1122}
1123
1124/// Helper type that supports both `data` and `input` fields that map to transaction input data.
1125///
1126/// This is done for compatibility reasons where older implementations used `data` instead of the
1127/// newer, recommended `input` field.
1128///
1129/// If both fields are set, it is expected that they contain the same value, otherwise an error is
1130/// returned.
1131#[cfg_attr(any(test, feature = "arbitrary"), derive(arbitrary::Arbitrary))]
1132#[derive(Clone, Debug, Default, PartialEq, Eq, Hash)]
1133#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
1134#[doc(alias = "TxInput")]
1135pub struct TransactionInput {
1136    /// Transaction data
1137    #[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
1138    pub input: Option<Bytes>,
1139    /// Transaction data
1140    ///
1141    /// This is the same as `input` but is used for backwards compatibility: <https://github.com/ethereum/go-ethereum/issues/15628>
1142    #[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
1143    pub data: Option<Bytes>,
1144}
1145
1146impl TransactionInput {
1147    /// Creates a new instance with the given input data.
1148    pub const fn new(data: Bytes) -> Self {
1149        Self::maybe_input(Some(data))
1150    }
1151
1152    /// Creates a new instance with the given input data and sets both `input` and `data` fields to
1153    /// the same value.
1154    pub fn both(data: Bytes) -> Self {
1155        Self::maybe_both(Some(data))
1156    }
1157
1158    /// Creates a new instance with the given input data.
1159    pub const fn maybe_input(input: Option<Bytes>) -> Self {
1160        Self { input, data: None }
1161    }
1162
1163    /// Creates a new instance with the given input data and sets both `input` and `data` fields to
1164    /// the same value.
1165    pub fn maybe_both(input: Option<Bytes>) -> Self {
1166        Self { data: input.clone(), input }
1167    }
1168
1169    /// Consumes the type and returns the optional input data.
1170    #[inline]
1171    pub fn into_input(self) -> Option<Bytes> {
1172        self.input.or(self.data)
1173    }
1174
1175    /// Ensures that if either `input` or `data` is set, the `input` field contains the value.
1176    ///
1177    /// This removes `data` the data field.
1178    pub fn normalize_input(&mut self) {
1179        let data = self.data.take();
1180        // If input is None but data has a value, copy data to input
1181        if self.input.is_none() && data.is_some() {
1182            self.input = data;
1183        }
1184    }
1185
1186    /// Consumes the type and returns it with [`Self::normalize_input`] applied
1187    pub fn normalized_input(mut self) -> Self {
1188        self.normalize_input();
1189        self
1190    }
1191
1192    /// Ensures that if either `data` or `input` is set, the `data` field contains the value.
1193    ///
1194    /// This removes `input` the data field.
1195    pub fn normalize_data(&mut self) {
1196        let input = self.input.take();
1197        if self.data.is_none() && input.is_some() {
1198            self.data = input;
1199        }
1200    }
1201
1202    /// Consumes the type and returns it with [`Self::normalize_data`] applied
1203    pub fn normalized_data(mut self) -> Self {
1204        self.normalize_data();
1205        self
1206    }
1207
1208    /// If only one field is set, this also sets the other field by with that value.
1209    ///
1210    /// This is a noop if both fields are already set.
1211    pub fn set_both(&mut self) {
1212        if self.input.is_none() {
1213            self.input = self.data.clone();
1214        }
1215        if self.data.is_none() {
1216            self.data = self.input.clone();
1217        }
1218    }
1219
1220    /// Consumes the type and returns it with [`Self::set_both`] applied.
1221    pub fn with_both(mut self) -> Self {
1222        self.set_both();
1223        self
1224    }
1225
1226    /// Consumes the type and returns the optional input data.
1227    ///
1228    /// Returns an error if both `data` and `input` fields are set and not equal.
1229    #[inline]
1230    pub fn try_into_unique_input(self) -> Result<Option<Bytes>, TransactionInputError> {
1231        self.check_unique_input().map(|()| self.into_input())
1232    }
1233
1234    /// Returns the optional input data.
1235    #[inline]
1236    pub fn input(&self) -> Option<&Bytes> {
1237        self.input.as_ref().or(self.data.as_ref())
1238    }
1239
1240    /// Returns the optional input data.
1241    ///
1242    /// Returns an error if both `data` and `input` fields are set and not equal.
1243    #[inline]
1244    pub fn unique_input(&self) -> Result<Option<&Bytes>, TransactionInputError> {
1245        self.check_unique_input().map(|()| self.input())
1246    }
1247
1248    fn check_unique_input(&self) -> Result<(), TransactionInputError> {
1249        if let (Some(input), Some(data)) = (&self.input, &self.data) {
1250            if input != data {
1251                return Err(TransactionInputError::default());
1252            }
1253        }
1254        Ok(())
1255    }
1256}
1257
1258impl From<Vec<u8>> for TransactionInput {
1259    fn from(input: Vec<u8>) -> Self {
1260        Self { input: Some(input.into()), data: None }
1261    }
1262}
1263
1264impl From<Bytes> for TransactionInput {
1265    fn from(input: Bytes) -> Self {
1266        Self { input: Some(input), data: None }
1267    }
1268}
1269
1270impl From<Option<Bytes>> for TransactionInput {
1271    fn from(input: Option<Bytes>) -> Self {
1272        Self { input, data: None }
1273    }
1274}
1275
1276/// Error thrown when both `data` and `input` fields are set and not equal.
1277#[derive(Debug, Default, thiserror::Error)]
1278#[error("both \"data\" and \"input\" are set and not equal. Please use \"input\" to pass transaction call data")]
1279#[doc(alias = "TxInputError")]
1280#[non_exhaustive]
1281pub struct TransactionInputError;
1282
1283/// Error thrown when a transaction request cannot be built into a transaction.
1284#[derive(Debug)]
1285pub struct BuildTransactionErr<T = TransactionRequest> {
1286    /// Transaction request that failed to build into a transaction.
1287    pub tx: T,
1288    /// Error message.
1289    pub error: String,
1290}
1291
1292#[cfg(test)]
1293mod tests {
1294    use super::*;
1295    use crate::Authorization;
1296    use alloy_primitives::b256;
1297    #[cfg(feature = "serde")]
1298    use alloy_serde::WithOtherFields;
1299    use assert_matches::assert_matches;
1300    use similar_asserts::assert_eq;
1301
1302    // <https://github.com/paradigmxyz/reth/issues/6670>
1303    #[test]
1304    #[cfg(feature = "serde")]
1305    fn serde_from_to() {
1306        let s = r#"{"from":"0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266", "to":"0x70997970C51812dc3A010C7d01b50e0d17dc79C8" }"#;
1307        let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
1308        assert!(req.input.check_unique_input().is_ok())
1309    }
1310
1311    #[test]
1312    #[cfg(feature = "serde")]
1313    fn serde_tx_request() {
1314        let s = r#"{"accessList":[],"data":"0x0902f1ac","to":"0xa478c2975ab1ea89e8196811f51a7b7ade33eb11","type":"0x02"}"#;
1315        let _req = serde_json::from_str::<TransactionRequest>(s).unwrap();
1316    }
1317
1318    #[test]
1319    #[cfg(feature = "serde")]
1320    fn serde_unique_call_input() {
1321        let s = r#"{"accessList":[],"data":"0x0902f1ac", "input":"0x0902f1ac","to":"0xa478c2975ab1ea89e8196811f51a7b7ade33eb11","type":"0x02"}"#;
1322        let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
1323        assert!(req.input.try_into_unique_input().unwrap().is_some());
1324
1325        let s = r#"{"accessList":[],"data":"0x0902f1ac","to":"0xa478c2975ab1ea89e8196811f51a7b7ade33eb11","type":"0x02"}"#;
1326        let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
1327        assert!(req.input.try_into_unique_input().unwrap().is_some());
1328
1329        let s = r#"{"accessList":[],"input":"0x0902f1ac","to":"0xa478c2975ab1ea89e8196811f51a7b7ade33eb11","type":"0x02"}"#;
1330        let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
1331        assert!(req.input.try_into_unique_input().unwrap().is_some());
1332
1333        let s = r#"{"accessList":[],"data":"0x0902f1ac", "input":"0x0902f1","to":"0xa478c2975ab1ea89e8196811f51a7b7ade33eb11","type":"0x02"}"#;
1334        let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
1335        assert!(req.input.try_into_unique_input().is_err());
1336    }
1337
1338    #[test]
1339    #[cfg(feature = "serde")]
1340    fn serde_tx_request_additional_fields() {
1341        let s = r#"{"accessList":[],"data":"0x0902f1ac","to":"0xa478c2975ab1ea89e8196811f51a7b7ade33eb11","type":"0x02","sourceHash":"0xbf7e331f7f7c1dd2e05159666b3bf8bc7a8a3a9eb1d518969eab529dd9b88c1a"}"#;
1342        let req = serde_json::from_str::<WithOtherFields<TransactionRequest>>(s).unwrap();
1343        assert_eq!(
1344            req.other.get_deserialized::<B256>("sourceHash").unwrap().unwrap(),
1345            b256!("bf7e331f7f7c1dd2e05159666b3bf8bc7a8a3a9eb1d518969eab529dd9b88c1a")
1346        );
1347    }
1348
1349    #[test]
1350    #[cfg(feature = "serde")]
1351    fn serde_tx_chain_id_field() {
1352        let chain_id: ChainId = 12345678;
1353
1354        let chain_id_as_num = format!(r#"{{"chainId": {chain_id} }}"#);
1355        let req1 = serde_json::from_str::<TransactionRequest>(&chain_id_as_num).unwrap();
1356        assert_eq!(req1.chain_id.unwrap(), chain_id);
1357
1358        let chain_id_as_hex = format!(r#"{{"chainId": "0x{chain_id:x}" }}"#);
1359        let req2 = serde_json::from_str::<TransactionRequest>(&chain_id_as_hex).unwrap();
1360        assert_eq!(req2.chain_id.unwrap(), chain_id);
1361    }
1362
1363    #[test]
1364    #[cfg(feature = "serde")]
1365    fn serde_empty() {
1366        let tx = TransactionRequest::default();
1367        let serialized = serde_json::to_string(&tx).unwrap();
1368        assert_eq!(serialized, "{}");
1369    }
1370
1371    #[test]
1372    #[cfg(feature = "serde")]
1373    fn serde_tx_with_sidecar() {
1374        // Create a sidecar with some data.
1375        let s = r#"{
1376            "to": "0x70997970c51812dc3a010c7d01b50e0d17dc79c8",
1377            "maxFeePerGas": "0x77359401",
1378            "maxPriorityFeePerGas": "0x1",
1379            "maxFeePerBlobGas": "0x77359400",
1380            "nonce": "0x0",
1381            "blobVersionedHashes": [
1382              "0x01b0761f87b081d5cf10757ccc89f12be355c70e2e29df288b65b30710dcbcd1"
1383            ],
1384            "blobs": [
1385              "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000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1386            ],
1387            "commitments": [
1388              "0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
1389            ],
1390            "proofs": [
1391              "0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
1392            ]
1393          }
1394        "#;
1395
1396        let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
1397
1398        assert!(req.sidecar.is_some());
1399
1400        let _serialized = serde_json::to_string_pretty(&req).unwrap();
1401
1402        let s = r#"{
1403            "to": "0x70997970c51812dc3a010c7d01b50e0d17dc79c8",
1404            "maxFeePerGas": "0x77359401",
1405            "maxPriorityFeePerGas": "0x1",
1406            "maxFeePerBlobGas": "0x77359400",
1407            "nonce": "0x0",
1408            "blobVersionedHashes": [
1409              "0x01b0761f87b081d5cf10757ccc89f12be355c70e2e29df288b65b30710dcbcd1"
1410            ],
1411            "blobs": [
1412              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1413            ],
1414            "commitments": [
1415              "0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
1416            ]
1417          }
1418        "#; // `proofs` field is missing.
1419
1420        let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
1421
1422        assert!(req.sidecar.is_none()); // Sidecar won't be deserialized.
1423    }
1424
1425    #[test]
1426    fn build_consensus_tx_works() {
1427        // Legacy
1428        {
1429            // Positive case
1430            let legacy_gas_limit = 123456;
1431            let legacy_request = TransactionRequest {
1432                to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
1433                gas_price: Some(1234),
1434                nonce: Some(57),
1435                gas: Some(legacy_gas_limit),
1436                ..Default::default()
1437            };
1438
1439            let maybe_legacy_tx: Result<TypedTransaction, _> = legacy_request.build_consensus_tx();
1440            assert_matches!(maybe_legacy_tx, Ok(TypedTransaction::Legacy(TxLegacy { gas_limit, .. })) if gas_limit == legacy_gas_limit);
1441
1442            // Negative case
1443            let legacy_request_missing_gas = TransactionRequest {
1444                to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
1445                gas_price: Some(1234),
1446                nonce: Some(57),
1447                ..Default::default()
1448            };
1449            let maybe_legacy_tx: Result<TypedTransaction, _> =
1450                legacy_request_missing_gas.build_consensus_tx();
1451            assert_matches!(maybe_legacy_tx, Err(..));
1452        }
1453
1454        // EIP-2930
1455        {
1456            // Positive case
1457            let access_list = AccessList(vec![alloy_eips::eip2930::AccessListItem {
1458                address: Address::repeat_byte(0x01),
1459                storage_keys: vec![B256::repeat_byte(0x02), B256::repeat_byte(0x04)],
1460            }]);
1461            let eip2930_request = TransactionRequest {
1462                to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
1463                gas_price: Some(1234),
1464                nonce: Some(57),
1465                gas: Some(123456),
1466                access_list: Some(access_list.clone()),
1467                ..Default::default()
1468            };
1469
1470            let maybe_eip2930_tx: Result<TypedTransaction, _> =
1471                eip2930_request.build_consensus_tx();
1472            assert_matches!(maybe_eip2930_tx, Ok(TypedTransaction::Eip2930(TxEip2930 { access_list, .. })) if access_list == access_list);
1473
1474            // Negative case
1475            let eip2930_request_missing_nonce = TransactionRequest {
1476                to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
1477                gas_price: Some(1234),
1478                gas: Some(123456),
1479                access_list: Some(access_list),
1480                ..Default::default()
1481            };
1482
1483            let maybe_eip2930_tx: Result<TypedTransaction, _> =
1484                eip2930_request_missing_nonce.build_consensus_tx();
1485            assert_matches!(maybe_eip2930_tx, Err(..));
1486        }
1487
1488        // EIP-1559
1489        {
1490            // Positive case
1491            let max_prio_fee = 987;
1492            let eip1559_request = TransactionRequest {
1493                to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
1494                max_fee_per_gas: Some(1234),
1495                max_priority_fee_per_gas: Some(max_prio_fee),
1496                nonce: Some(57),
1497                gas: Some(123456),
1498                ..Default::default()
1499            };
1500
1501            let maybe_eip1559_tx: Result<TypedTransaction, _> =
1502                eip1559_request.build_consensus_tx();
1503            assert_matches!(maybe_eip1559_tx, Ok(TypedTransaction::Eip1559(TxEip1559 { max_priority_fee_per_gas, .. })) if max_priority_fee_per_gas == max_prio_fee);
1504
1505            // Negative case
1506            let eip1559_request_missing_max_fee = TransactionRequest {
1507                to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
1508                max_priority_fee_per_gas: Some(max_prio_fee),
1509                nonce: Some(57),
1510                gas: Some(123456),
1511                ..Default::default()
1512            };
1513
1514            let maybe_eip1559_tx: Result<TypedTransaction, _> =
1515                eip1559_request_missing_max_fee.build_consensus_tx();
1516            assert_matches!(maybe_eip1559_tx, Err(..));
1517        }
1518
1519        // EIP-4844 without sidecar
1520        {
1521            // Positive case
1522            let max_fee_per_blob_gas = 13579;
1523            let eip4844_request = TransactionRequest {
1524                to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
1525                max_fee_per_gas: Some(1234),
1526                max_priority_fee_per_gas: Some(678),
1527                nonce: Some(57),
1528                gas: Some(123456),
1529                max_fee_per_blob_gas: Some(max_fee_per_blob_gas),
1530                blob_versioned_hashes: Some(vec![B256::repeat_byte(0xAB)]),
1531                ..Default::default()
1532            };
1533
1534            let maybe_eip4844_tx: Result<TypedTransaction, _> =
1535                eip4844_request.build_consensus_tx();
1536            assert_matches!(maybe_eip4844_tx, Ok(TypedTransaction::Eip4844(TxEip4844Variant::TxEip4844(TxEip4844 { max_fee_per_blob_gas, .. }))) if max_fee_per_blob_gas == max_fee_per_blob_gas);
1537
1538            // Negative case
1539            let eip4844_request_incorrect_to = TransactionRequest {
1540                to: Some(TxKind::Create),
1541                max_fee_per_gas: Some(1234),
1542                max_priority_fee_per_gas: Some(678),
1543                nonce: Some(57),
1544                gas: Some(123456),
1545                max_fee_per_blob_gas: Some(max_fee_per_blob_gas),
1546                blob_versioned_hashes: Some(vec![B256::repeat_byte(0xAB)]),
1547                ..Default::default()
1548            };
1549
1550            let maybe_eip4844_tx: Result<TypedTransaction, _> =
1551                eip4844_request_incorrect_to.build_consensus_tx();
1552            assert_matches!(maybe_eip4844_tx, Err(..));
1553        }
1554
1555        // EIP-4844 with sidecar
1556        {
1557            use alloy_eips::eip4844::{Blob, BlobTransactionSidecar};
1558
1559            // Positive case
1560            let sidecar =
1561                BlobTransactionSidecar::new(vec![Blob::repeat_byte(0xFA)], Vec::new(), Vec::new());
1562            let eip4844_request = TransactionRequest {
1563                to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
1564                max_fee_per_gas: Some(1234),
1565                max_priority_fee_per_gas: Some(678),
1566                nonce: Some(57),
1567                gas: Some(123456),
1568                max_fee_per_blob_gas: Some(13579),
1569                blob_versioned_hashes: Some(vec![B256::repeat_byte(0xAB)]),
1570                sidecar: Some(sidecar),
1571                ..Default::default()
1572            };
1573
1574            let maybe_eip4844_tx: Result<TypedTransaction, _> =
1575                eip4844_request.build_consensus_tx();
1576            assert_matches!(maybe_eip4844_tx,
1577            Ok(TypedTransaction::Eip4844(TxEip4844Variant::TxEip4844WithSidecar(TxEip4844WithSidecar {
1578            sidecar, .. }))) if sidecar == sidecar);
1579
1580            // with create to
1581            let sidecar =
1582                BlobTransactionSidecar::new(vec![Blob::repeat_byte(0xFA)], Vec::new(), Vec::new());
1583            let eip4844_request = TransactionRequest {
1584                to: Some(TxKind::Create),
1585                max_fee_per_gas: Some(1234),
1586                max_priority_fee_per_gas: Some(678),
1587                nonce: Some(57),
1588                gas: Some(123456),
1589                max_fee_per_blob_gas: Some(13579),
1590                blob_versioned_hashes: Some(vec![B256::repeat_byte(0xAB)]),
1591                sidecar: Some(sidecar.clone()),
1592                ..Default::default()
1593            };
1594
1595            let maybe_eip4844_tx: Result<TypedTransaction, _> =
1596                eip4844_request.build_consensus_tx();
1597            assert_matches!(maybe_eip4844_tx, Err(..));
1598
1599            // Negative case
1600            let eip4844_request_incorrect_to = TransactionRequest {
1601                to: Some(TxKind::Create),
1602                max_fee_per_gas: Some(1234),
1603                max_priority_fee_per_gas: Some(678),
1604                nonce: Some(57),
1605                gas: Some(123456),
1606                max_fee_per_blob_gas: Some(13579),
1607                blob_versioned_hashes: Some(vec![B256::repeat_byte(0xAB)]),
1608                sidecar: Some(sidecar),
1609                ..Default::default()
1610            };
1611
1612            let maybe_eip4844_tx: Result<TypedTransaction, _> =
1613                eip4844_request_incorrect_to.build_consensus_tx();
1614            assert_matches!(maybe_eip4844_tx, Err(..));
1615        }
1616
1617        // EIP-7702
1618        {
1619            let eip4844_request = TransactionRequest {
1620                to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
1621                max_fee_per_gas: Some(1234),
1622                max_priority_fee_per_gas: Some(678),
1623                nonce: Some(57),
1624                gas: Some(123456),
1625                max_fee_per_blob_gas: Some(13579),
1626                authorization_list: Some(vec![SignedAuthorization::new_unchecked(
1627                    Authorization {
1628                        chain_id: Default::default(),
1629                        address: Default::default(),
1630                        nonce: 0,
1631                    },
1632                    0,
1633                    U256::ZERO,
1634                    U256::ZERO,
1635                )]),
1636                ..Default::default()
1637            };
1638
1639            let maybe_eip4844_tx: Result<TypedTransaction, _> =
1640                eip4844_request.build_consensus_tx();
1641            assert_matches!(maybe_eip4844_tx, Ok(TypedTransaction::Eip7702(_)));
1642
1643            // as create tx
1644            let eip4844_request = TransactionRequest {
1645                to: Some(TxKind::Create),
1646                max_fee_per_gas: Some(1234),
1647                max_priority_fee_per_gas: Some(678),
1648                nonce: Some(57),
1649                gas: Some(123456),
1650                max_fee_per_blob_gas: Some(13579),
1651                authorization_list: Some(vec![SignedAuthorization::new_unchecked(
1652                    Authorization {
1653                        chain_id: Default::default(),
1654                        address: Default::default(),
1655                        nonce: 0,
1656                    },
1657                    0,
1658                    U256::ZERO,
1659                    U256::ZERO,
1660                )]),
1661                ..Default::default()
1662            };
1663
1664            let maybe_eip4844_tx: Result<TypedTransaction, _> =
1665                eip4844_request.build_consensus_tx();
1666            assert_matches!(maybe_eip4844_tx, Err(..));
1667        }
1668    }
1669
1670    #[test]
1671    fn deserde_auth_request() {
1672        let s = r#"        {
1673            "to": "0xE854C84cD68fC434cB3B0042c29235D452cAD977",
1674            "value": "0x2386f26fc10000",
1675            "data": "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",
1676            "from": "0x4b19129EA58431A06D01054f69AcAe5de50633b6",
1677            "authorizationList": [
1678                {
1679                    "chainId": "0x2105",
1680                    "address": "0x000000004F43C49e93C970E84001853a70923B03",
1681                    "nonce": "0x0",
1682                    "r": "0xb3fdb76993ec6787313ab8b54129200032dfb9ce683fa9f7693129421e6a3185",
1683                    "s": "0x210b3350107a5687b532a346a90e7cc9a799b995743e2b79698bedba7bd779ae",
1684                    "v": "0x1b",
1685                    "yParity": "0x0"
1686                }
1687            ]
1688        }"#;
1689
1690        let req: TransactionRequest = serde_json::from_str(s).unwrap();
1691        let auths = req.authorization_list.unwrap();
1692        assert_eq!(auths.len(), 1);
1693        assert_eq!(auths[0].y_parity(), 0);
1694    }
1695}