{"id":31128,"date":"2025-04-21T08:11:09","date_gmt":"2025-04-21T00:11:09","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/31128.html"},"modified":"2025-04-21T08:11:09","modified_gmt":"2025-04-21T00:11:09","slug":"%e5%ae%9e%e7%8e%b0%e4%b8%80%e4%b8%aa%e6%94%af%e6%8c%81-streamable-http-%e7%9a%84-mcp-%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%8f%8a%e5%ae%a2%e6%88%b7%e7%ab%af","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/31128.html","title":{"rendered":"\u5b9e\u73b0\u4e00\u4e2a\u652f\u6301 Streamable HTTP \u7684 MCP \u670d\u52a1\u5668\u53ca\u5ba2\u6237\u7aef"},"content":{"rendered":"

\u5728\u73b0\u4ee3\u7684 Web \u5f00\u53d1\u4e2d，\u5b9e\u65f6\u6570\u636e\u4f20\u8f93\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u9700\u6c42\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528 FastAPI \u5b9e\u73b0\u4e00\u4e2a\u652f\u6301 Streamable HTTP \u7684 MCP（Model Context Protocol）\u670d\u52a1\u5668，\u5e76\u63d0\u4f9b Python \u5ba2\u6237\u7aef\u548c\u524d\u7aef\u5ba2\u6237\u7aef\u7684\u5b9e\u73b0\u3002<\/p>\n

1. \u4ec0\u4e48\u662f Streamable HTTP \u548c MCP？<\/h3>\n

Streamable HTTP \u662f\u4e00\u79cd\u5141\u8bb8\u670d\u52a1\u5668\u4ee5\u6d41\u7684\u5f62\u5f0f\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e\u7684\u6280\u672f\u3002\u8fd9\u5728\u5904\u7406\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u64cd\u4f5c\u6216\u5b9e\u65f6\u6570\u636e\u66f4\u65b0\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n

MCP（Model Context Protocol） \u662f\u4e00\u79cd\u534f\u8bae，\u7528\u4e8e\u5728\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u4f20\u8f93\u6a21\u578b\u4e0a\u4e0b\u6587\u4fe1\u606f\u3002\u5b83\u652f\u6301\u521d\u59cb\u5316\u3001\u6d88\u606f\u4f20\u8f93\u548c\u8fdb\u5ea6\u8ddf\u8e2a\u7b49\u529f\u80fd\u3002<\/p>\n

2. \u670d\u52a1\u5668\u7aef\u5b9e\u73b0<\/h3>\n

\u6211\u4eec\u5c06\u4f7f\u7528 FastAPI \u6765\u5b9e\u73b0\u4e00\u4e2a\u652f\u6301 Streamable HTTP \u7684 MCP \u670d\u52a1\u5668\u3002FastAPI \u662f\u4e00\u4e2a\u73b0\u4ee3\u3001\u5feb\u901f\u7684 Web \u6846\u67b6，\u57fa\u4e8e Python \u7c7b\u578b\u63d0\u793a，\u652f\u6301\u5f02\u6b65\u64cd\u4f5c\u3002<\/p>\n

\u5b89\u88c5 FastAPI \u548c Uvicorn<\/h4>\n

\u9996\u5148，\u786e\u4fdd\u4f60\u5df2\u7ecf\u5b89\u88c5\u4e86 FastAPI \u548c Uvicorn\u3002\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u884c\u5b89\u88c5：<\/p>\n

pip install<\/span> fastapi uvicorn<\/p>\n

\u670d\u52a1\u5668\u7aef\u4ee3\u7801<\/h4>\n

\u4ee5\u4e0b\u662f\u670d\u52a1\u5668\u7aef\u7684\u5b8c\u6574\u4ee3\u7801：<\/p>\n

from<\/span> fastapi import<\/span> FastAPI,<\/span> Request,<\/span> HTTPException
\nfrom<\/span> fastapi.<\/span>responses import<\/span> StreamingResponse,<\/span> JSONResponse
\nfrom<\/span> fastapi.<\/span>middleware.<\/span>cors import<\/span> CORSMiddleware
\nimport<\/span> asyncio
\nimport<\/span> uuid<\/p>\n

app =<\/span> FastAPI(<\/span>)<\/span><\/p>\n

# \u914d\u7f6e CORS<\/span>
\napp.<\/span>add_middleware(<\/span>
\n CORSMiddleware,<\/span>
\n allow_origins=<\/span>[<\/span>"*"<\/span>]<\/span>,<\/span> # \u5141\u8bb8\u6240\u6709\u6765\u6e90<\/span>
\n allow_credentials=<\/span>True<\/span>,<\/span>
\n allow_methods=<\/span>[<\/span>"*"<\/span>]<\/span>,<\/span> # \u5141\u8bb8\u6240\u6709 HTTP \u65b9\u6cd5<\/span>
\n allow_headers=<\/span>[<\/span>"*"<\/span>]<\/span>,<\/span> # \u5141\u8bb8\u6240\u6709\u5934\u90e8<\/span>
\n expose_headers=<\/span>[<\/span>"Mcp-Session-Id"<\/span>]<\/span>,<\/span> # \u5141\u8bb8\u5ba2\u6237\u7aef\u8bbf\u95ee\u7684\u81ea\u5b9a\u4e49\u5934<\/span>
\n)<\/span><\/p>\n

# \u6a21\u62df\u5b58\u50a8\u4f1a\u8bdd\u4fe1\u606f<\/span>
\nsessions =<\/span> {<\/span>}<\/span><\/p>\n

@app.<\/span>post<\/span>(<\/span>"\/message"<\/span>)<\/span>
\nasync<\/span> def<\/span> handle_message<\/span>(<\/span>request:<\/span> Request)<\/span>:<\/span>
\n session_id =<\/span> request.<\/span>headers.<\/span>get(<\/span>"Mcp-Session-Id"<\/span>)<\/span>
\n if<\/span> not<\/span> session_id:<\/span>
\n session_id =<\/span> str<\/span>(<\/span>uuid.<\/span>uuid4(<\/span>)<\/span>)<\/span><\/p>\n

# \u83b7\u53d6\u8bf7\u6c42\u6570\u636e<\/span>
\n data =<\/span> await<\/span> request.<\/span>json(<\/span>)<\/span>
\n print<\/span>(<\/span>f"Received message: <\/span>{<\/span>data}<\/span><\/span>"<\/span><\/span>)<\/span><\/p>\n

# \u6a21\u62df\u5904\u7406\u8bf7\u6c42\u5e76\u53d1\u9001\u54cd\u5e94<\/span>
\n response_data =<\/span> {<\/span>"result"<\/span>:<\/span> "Request processed"<\/span>}<\/span><\/p>\n

# \u8fd4\u56de JSON \u54cd\u5e94，\u5e76\u5728\u5934\u4e2d\u5305\u542b Mcp-Session-Id<\/span>
\n return<\/span> JSONResponse(<\/span>content=<\/span>{<\/span>"jsonrpc"<\/span>:<\/span> "2.0"<\/span>,<\/span> "id"<\/span>:<\/span> data.<\/span>get(<\/span>"id"<\/span>)<\/span>,<\/span> "result"<\/span>:<\/span> response_data}<\/span>,<\/span>
\n headers=<\/span>{<\/span>"Mcp-Session-Id"<\/span>:<\/span> session_id}<\/span>)<\/span><\/p>\n

@app.<\/span>get<\/span>(<\/span>"\/message"<\/span>)<\/span>
\nasync<\/span> def<\/span> handle_sse<\/span>(<\/span>request:<\/span> Request)<\/span>:<\/span>
\n session_id =<\/span> request.<\/span>headers.<\/span>get(<\/span>"Mcp-Session-Id"<\/span>)<\/span> or<\/span> request.<\/span>query_params.<\/span>get(<\/span>"Mcp-Session-Id"<\/span>)<\/span>
\n if<\/span> not<\/span> session_id:<\/span>
\n raise<\/span> HTTPException(<\/span>status_code=<\/span>400<\/span>,<\/span> detail=<\/span>"Session ID is required"<\/span>)<\/span><\/p>\n

async<\/span> def<\/span> event_generator<\/span>(<\/span>)<\/span>:<\/span>
\n for<\/span> i in<\/span> range<\/span>(<\/span>5<\/span>)<\/span>:<\/span>
\n await<\/span> asyncio.<\/span>sleep(<\/span>1<\/span>)<\/span> # \u6a21\u62df\u5ef6\u8fdf<\/span>
\n yield<\/span> f"data: Message <\/span>{<\/span>i +<\/span> 1<\/span>}<\/span><\/span>\\\\n\\\\n"<\/span><\/span><\/p>\n

return<\/span> StreamingResponse(<\/span>event_generator(<\/span>)<\/span>,<\/span> media_type=<\/span>"text\/event-stream"<\/span>)<\/span><\/p>\n

if<\/span> __name__ ==<\/span> "__main__"<\/span>:<\/span>
\n import<\/span> uvicorn<\/p>\n

uvicorn.<\/span>run(<\/span>app,<\/span> host=<\/span>"0.0.0.0"<\/span>,<\/span> port=<\/span>8000<\/span>)<\/span><\/p>\n

\u670d\u52a1\u5668\u7aef\u8bf4\u660e<\/h4>\n
  • \n

    CORS \u914d\u7f6e：<\/p>\n