Make CreateRequestError v2-only

Its variants only apply to extracting v2 requests.

Author: DanGould

payjoin/src/send/error.rs

@@ -90,64 +90,54 @@ impl std::error::Error for BuildSenderError {
 /// `unwrap()`ing it is thus considered OK in Rust but you may achieve nicer message by displaying
 /// it.
 #[derive(Debug)]
+#[cfg(feature = "v2")]
 pub struct CreateRequestError(InternalCreateRequestError);
 
 #[derive(Debug)]
+#[cfg(feature = "v2")]
 pub(crate) enum InternalCreateRequestError {
     Url(url::ParseError),
-    #[cfg(feature = "v2")]
     Hpke(crate::hpke::HpkeError),
-    #[cfg(feature = "v2")]
     OhttpEncapsulation(crate::ohttp::OhttpEncapsulationError),
-    #[cfg(feature = "v2")]
     ParseReceiverPubkey(ParseReceiverPubkeyParamError),
-    #[cfg(feature = "v2")]
     MissingOhttpConfig,
-    #[cfg(feature = "v2")]
     Expired(std::time::SystemTime),
 }
 
+#[cfg(feature = "v2")]
 impl fmt::Display for CreateRequestError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         use InternalCreateRequestError::*;
 
         match &self.0 {
             Url(e) => write!(f, "cannot parse url: {:#?}", e),
-            #[cfg(feature = "v2")]
             Hpke(e) => write!(f, "v2 error: {}", e),
-            #[cfg(feature = "v2")]
             OhttpEncapsulation(e) => write!(f, "v2 error: {}", e),
-            #[cfg(feature = "v2")]
             ParseReceiverPubkey(e) => write!(f, "cannot parse receiver public key: {}", e),
-            #[cfg(feature = "v2")]
             MissingOhttpConfig =>
                 write!(f, "no ohttp configuration with which to make a v2 request available"),
-            #[cfg(feature = "v2")]
             Expired(expiry) => write!(f, "session expired at {:?}", expiry),
         }
     }
 }
 
+#[cfg(feature = "v2")]
 impl std::error::Error for CreateRequestError {
     fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
         use InternalCreateRequestError::*;
 
         match &self.0 {
             Url(error) => Some(error),
-            #[cfg(feature = "v2")]
             Hpke(error) => Some(error),
-            #[cfg(feature = "v2")]
             OhttpEncapsulation(error) => Some(error),
-            #[cfg(feature = "v2")]
             ParseReceiverPubkey(error) => Some(error),
-            #[cfg(feature = "v2")]
             MissingOhttpConfig => None,
-            #[cfg(feature = "v2")]
             Expired(_) => None,
         }
     }
 }
 
+#[cfg(feature = "v2")]
 impl From<InternalCreateRequestError> for CreateRequestError {
     fn from(value: InternalCreateRequestError) -> Self { CreateRequestError(value) }
 }

payjoin/src/send/mod.rs

@@ -27,10 +27,12 @@ use std::str::FromStr;
 use bitcoin::hashes::{sha256, Hash};
 use bitcoin::psbt::Psbt;
 use bitcoin::{Amount, FeeRate, Script, ScriptBuf, TxOut, Weight};
-pub use error::{BuildSenderError, CreateRequestError, ResponseError, ValidationError};
-pub(crate) use error::{
-    InternalBuildSenderError, InternalCreateRequestError, InternalValidationError,
-};
+#[cfg(feature = "v2")]
+pub use error::CreateRequestError;
+#[cfg(feature = "v2")]
+pub(crate) use error::InternalCreateRequestError;
+pub use error::{BuildSenderError, ResponseError, ValidationError};
+pub(crate) use error::{InternalBuildSenderError, InternalValidationError};
 #[cfg(feature = "v2")]
 use serde::{Deserialize, Serialize};
 use url::Url;
@@ -255,15 +257,14 @@ pub struct Sender {
 
 impl Sender {
     /// Extract serialized V1 Request and Context from a Payjoin Proposal
-    pub fn extract_v1(&self) -> Result<(Request, V1Context), CreateRequestError> {
+    pub fn extract_v1(&self) -> Result<(Request, V1Context), url::ParseError> {
         let url = serialize_url(
             self.endpoint.clone(),
             self.disable_output_substitution,
             self.fee_contribution,
             self.min_fee_rate,
             "1", // payjoin version
-        )
-        .map_err(InternalCreateRequestError::Url)?;
+        )?;
         let body = self.psbt.to_string().as_bytes().to_vec();
         Ok((
             Request::new_v1(url, body),