From 8222e18e40a1e1a0f6bcff83ef9f1d86b2c65f02 Mon Sep 17 00:00:00 2001
From: A-afflatus <130149563+A-afflatus@users.noreply.github.com>
Date: Wed, 21 May 2025 11:16:48 +0800
Subject: [PATCH] fix: resolve the server 406 error in API calls (#203)

---
 .../src/transport/common/reqwest/streamable_http_client.rs     | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/crates/rmcp/src/transport/common/reqwest/streamable_http_client.rs b/crates/rmcp/src/transport/common/reqwest/streamable_http_client.rs
index 9a8f792..1d72f3a 100644
--- a/crates/rmcp/src/transport/common/reqwest/streamable_http_client.rs
+++ b/crates/rmcp/src/transport/common/reqwest/streamable_http_client.rs
@@ -88,8 +88,7 @@ impl StreamableHttpClient for reqwest::Client {
     ) -> Result<StreamableHttpPostResponse, StreamableHttpError<Self::Error>> {
         let mut request = self
             .post(uri.as_ref())
-            .header(ACCEPT, EVENT_STREAM_MIME_TYPE)
-            .header(ACCEPT, JSON_MIME_TYPE);
+            .header(ACCEPT, [EVENT_STREAM_MIME_TYPE, JSON_MIME_TYPE].join(", "));
         if let Some(auth_header) = auth_token {
             request = request.bearer_auth(auth_header);
         }