Unable to run Async requests

[kameshsampath]

I have MCP server https://github.com/kameshsampath/snowflake-cortex-agent-mcp-server. When testing the application I see the docker mcp gateway run is not waiting for the SSE response.

When I configure MCP like e.g. with vscode it works perfectly responding to my question

"Vannilla_Cortex": {
            "command": "docker",
            "args": [
                "run",
                "-i",
                "--rm",
                "-e",
                "SNOWFLAKE_ACCOUNT",
                "-e",
                "SNOWFLAKE_USER",
                "-e",
                "SNOWFLAKE_PASSWORD",
                "-e",
                "SEMANTIC_MODEL_FILE",
                "-e",
                "CORTEX_SEARCH_SERVICE",
                "-e",
                "SNOWFLAKE_WAREHOUSE",
                "-e",
                "CORTEX_AGENT_LLM_MODEL",
                "mcp/snowflake-cortex-agent"
            ],
            "type": "stdio",
            "env": {
                "SNOWFLAKE_ACCOUNT": "xxx",
                "SNOWFLAKE_PASSWORD": "xxx",
                "SEMANTIC_MODEL_FILE": "xxx",
                "CORTEX_SEARCH_SERVICE": "xxx",
                "SNOWFLAKE_MCP_DEMO_WAREHOUSE": "xx"
            }
        }

But when I do configure a MCP server like and do the same query it fails meaning it does not return any response. I see its not waiting for the SSE response to be streamed and completed.

 "MCP_DOCKER": {
            "command": "docker",
            "args": [
                "mcp",
                "gateway",
                "run",
                "--long-lived",
                "--verbose"
            ],
            "type": "stdio"
        },

CC: @ipedrazas

[kameshsampath]

@ipedrazas I had debugging session with @ajeetraina and we also tried docker mcp gateway run --transport=streaming --port=8811 to see if the gateway waits for the SSE response to start streaming but I get some waiting for initialize messages as shown in attached logs.

log.txt

CC: @ajeetraina