Fixed StreamableHttpClientSessionTransport.cs for netstandard (#582)

lucapivato · web-flow · commit cd8e5d5f7f5e · 2025-07-02T13:13:13.000-07:00
Fixed exception 'The format of value 'application/json; charset=utf-8' is invalid
diff --git a/src/ModelContextProtocol.Core/Client/StreamableHttpClientSessionTransport.cs b/src/ModelContextProtocol.Core/Client/StreamableHttpClientSessionTransport.cs
@@ -75,7 +75,7 @@ internal async Task<HttpResponseMessage> SendHttpRequestAsync(JsonRpcMessage mes
         using var content = new StringContent(
             JsonSerializer.Serialize(message, McpJsonUtilities.JsonContext.Default.JsonRpcMessage),
             Encoding.UTF8,
-            "application/json; charset=utf-8"
+            "application/json"
         );
 #endif
 
@@ -310,4 +310,4 @@ internal static void CopyAdditionalHeaders(
             }
         }
     }
-}
+}

Original file line number	Diff line number	Diff line change
`@@ -75,7 +75,7 @@ internal async Task<HttpResponseMessage> SendHttpRequestAsync(JsonRpcMessage mes`
`75`	`75`	`using var content = new StringContent(`
`76`	`76`	`JsonSerializer.Serialize(message, McpJsonUtilities.JsonContext.Default.JsonRpcMessage),`
`77`	`77`	`Encoding.UTF8,`
`78`		`- "application/json; charset=utf-8"`
	`78`	`+ "application/json"`
`79`	`79`	`);`
`80`	`80`	`#endif`
`81`	`81`
`@@ -310,4 +310,4 @@ internal static void CopyAdditionalHeaders(`
`310`	`310`	`}`
`311`	`311`	`}`
`312`	`312`	`}`
`313`		`-}`
	`313`	`+}`