Add request logging back (#7471)

Having full requests helps debugging

codex-rs/Cargo.lock

@@ -1068,6 +1068,7 @@ dependencies = [
  "serde_json",
  "thiserror 2.0.17",
  "tokio",
+ "tracing",
 ]
 
 [[package]]

codex-rs/codex-client/Cargo.toml

@@ -1,21 +1,22 @@
 [package]
-name = "codex-client"
-version.workspace = true
 edition.workspace = true
 license.workspace = true
+name = "codex-client"
+version.workspace = true
 
 [dependencies]
 async-trait = { workspace = true }
 bytes = { workspace = true }
+eventsource-stream = { workspace = true }
 futures = { workspace = true }
 http = { workspace = true }
+rand = { workspace = true }
 reqwest = { workspace = true, features = ["json", "stream"] }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
 thiserror = { workspace = true }
 tokio = { workspace = true, features = ["macros", "rt", "time", "sync"] }
-rand = { workspace = true }
+tracing = { workspace = true }
-eventsource-stream = { workspace = true }
 
 [lints]
 workspace = true

codex-rs/codex-client/src/transport.rs

@@ -8,6 +8,9 @@ use futures::stream::BoxStream;
 use http::HeaderMap;
 use http::Method;
 use http::StatusCode;
+use tracing::Level;
+use tracing::enabled;
+use tracing::trace;
 
 pub type ByteStream = BoxStream<'static, Result<Bytes, TransportError>>;
 
@@ -83,6 +86,15 @@ impl HttpTransport for ReqwestTransport {
     }
 
     async fn stream(&self, req: Request) -> Result<StreamResponse, TransportError> {
+        if enabled!(Level::TRACE) {
+            trace!(
+                "{} to {}: {}",
+                req.method,
+                req.url,
+                req.body.as_ref().unwrap_or_default()
+            );
+        }
+
         let builder = self.build(req)?;
         let resp = builder.send().await.map_err(Self::map_error)?;
         let status = resp.status();