{"id":5777,"date":"2026-02-11T11:12:23","date_gmt":"2026-02-11T03:12:23","guid":{"rendered":"http:\/\/xinblog.ltd\/?p=5777"},"modified":"2026-02-25T09:45:56","modified_gmt":"2026-02-25T01:45:56","slug":"6-mcp%e5%8d%8f%e8%ae%ae%e5%86%85%e9%83%a8%e4%bb%a3%e7%a0%81%e5%8f%8a%e6%9e%b6%e6%9e%84%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"http:\/\/xinblog.ltd\/?p=5777","title":{"rendered":"6.MCP\u534f\u8bae\u5185\u90e8\u4ee3\u7801\u53ca\u67b6\u6784\u8be6\u89e3"},"content":{"rendered":"<p>MCP\u534f\u8bae\u5185\u90e8\u8be6\u89e3<\/p>\n<p>\u4eca\u5929\u6211\u4eec\u8bf4\u4e0bMCP\u7684\u5185\u90e8\u4ee3\u7801\u7ec6\u8282\uff0c\u901a\u8fc7\u8fd9\u4e9b\u7ec6\u8282\u6765\u8bb2\u8ff0\u4e0bMCP\u7684\u5de5\u4f5c\u6d41\u7a0b\u3002<\/p>\n<p>\u5bf9\u4e8eMCP\u534f\u8bae\uff0c\u6211\u4eec\u7684\u7406\u89e3\u662fMCP\u534f\u8bae\u4e3b\u8981\u662f\u8ba9\u5927\u6a21\u578b\u5177\u6709\u8c03\u7528\u5de5\u5177\u7684\u80fd\u529b\uff0c\u5728\u6ca1\u6709MCP\u534f\u8bae\u7684\u8bdd\uff0c\u60f3\u8981\u8ba9\u6a21\u578b\u8c03\u7528\u5de5\u5177\uff0c\u5c31\u9700\u8981\u5199\u597dAPI\u8c03\u7528\uff0c\u8ba4\u8bc1\uff0c\u9519\u8bef\u5904\u7406\u7684\u903b\u8f91\u3002MCP\u534f\u8bae\u5c06\u4e0a\u4e0b\u6587\u7ba1\u7406\u548c\u5de5\u5177\u8c03\u7528\u80fd\u529b\u62bd\u8c61\u51fa\u6765\uff0c\u8ba9\u5927\u6a21\u578b\u65e0\u9700\u611f\u5e94\u5982\u4f55\u8c03\u7528\uff0c\u800c\u662f\u53ea\u5173\u6ce8\u53ef\u4ee5\u7528\u4ec0\u4e48\u8d44\u6e90\u6765\u8fdb\u884c\u8c03\u7528\u5e76\u8fdb\u884c\u76f8\u5173\u7684\u8c03\u7528\u3002<\/p>\n<p>\u5728\u67b6\u6784\u4e4b\u4e2d\uff0c\u5206\u4e3a\u4e86\u4e09\u4e2a\u90e8\u5206\uff0c\u5206\u522b\u662fMCP Host\uff0c\u6bd4\u5982\u684c\u9762\u7aef\u7684Claude\u5ba2\u6237\u7aef\uff0c\u6216\u8005Tare\u8fd9\u6837\u7684\u5ba2\u6237\u7aef\u3002\u5176\u5185\u90e8\u4f1a\u521b\u5efaMCP Client\uff0c\u4ece\u800c\u548c\u591a\u4e2aMCP Server\u5efa\u7acb\u8fde\u63a5\uff0c\u5e76\u901a\u8fc7\u8bf8\u5982stdio\u6216\u8005HTTP+SSE\u534f\u8bae\u6765\u901a\u4fe1\u3002<\/p>\n<p>\u4e4b\u540e\u662fMCP Client\uff0c\u5176\u5c06\u5927\u6a21\u578b\u7684\u8bf7\u6c42\u8fdb\u884c\u89e3\u6790\u5e76\u5c01\u88c5\uff0c\u6253\u5305\u4e3a\u7b26\u5408JSON-RPC 2.0\u7684\u6d88\u606f\uff0c\u7136\u540e\u4ea4\u7ed9Server\uff0c\u4e4b\u540e\u5c06\u7ed3\u679c\u8fd4\u56de\u7ed9Host\uff0c\u4f20\u9012\u7ed9\u5927\u6a21\u578b\u7684\u4e0a\u4e0b\u6587\u4e4b\u4e2d\u3002<\/p>\n<p>\u6700\u540e\u662fMCP Server\uff0c\u5176\u4e3b\u8981\u63d0\u4f9b\u5bf9\u5e94\u7684\u5de5\u5177\u5217\u8868\u548c\u5de5\u5177\u6267\u884c\u80fd\u529b\u3002\u6bd4\u5982FastMCP\uff0c\u4f1a\u81ea\u52a8\u6ce8\u518c\u4e00\u7cfb\u5217\u7684\u63a5\u53e3\uff0c\u5e76\u76d1\u542cClient\u7684JSON-RPC\u6d88\u606f\uff0c\u6536\u5230\u67d0\u4e2a\u8c03\u7528\u8bf7\u6c42\u7684\u65f6\u5019\uff0c\u8c03\u7528\u5bf9\u5e94\u7684\u5de5\u5177\u5e76\u5c01\u88c5Result\u8fdb\u884c\u8fd4\u56de\u3002<\/p>\n<p>\u4e09\u8005\u5728\u751f\u547d\u5468\u671f\u7684\u4ea4\u4e92\u6d41\u7a0b\u5206\u4e3a\u4e09\u9636\u6bb5<\/p>\n<ol>\n<li>\u521d\u59cb\u5316\u64cd\u4f5c\uff0cHost\u7684MCP Client\u5411\u7740Server\u53d1\u8d77initialize\u8bf7\u6c42\uff0c\u8fdb\u884c\u786e\u8ba4<\/li>\n<li>\u8fdb\u884c\u901a\u4fe1\uff0c\u53d1\u9001\u5404\u7c7b\u7684\u4e8b\u4ef6\u8fdb\u884c\u901a\u4fe1<\/li>\n<li>\u5173\u95ed\uff0c\u4efb\u610f\u4e00\u65b9\u8c03\u7528close\u6765\u65ad\u5f00\u8fde\u63a5\u3002<\/li>\n<\/ol>\n<p>\u800c\u5728\u5176\u4e2d\u7684\u901a\u4fe1\u5468\u671f\u4e2d\uff0c\u53ef\u4ee5\u4f20\u9012\u7684\u6d88\u606f\u7c7b\u578b\u5305\u62ec<\/p>\n<p>Request \u53d1\u9001\u8bf7\u6c42\uff0c\u7b49\u5f85\u54cd\u5e94<\/p>\n<p>Result \u8fd4\u56de\u54cd\u5e94<\/p>\n<p>Error \u8bf7\u6c42\u5931\u8d25\u65f6\u5019\u8fdb\u884c\u8fd4\u56de<\/p>\n<p>Notification \u4e00\u4e2a\u5355\u5411\u7684\u901a\u77e5\u6d88\u606f<\/p>\n<p>\u90a3\u4e48\u6211\u4eec\u63a5\u4e0b\u6765\uff0c\u5c31\u662f\u6839\u636e\u4e0a\u9762\u8bf4\u7684\u4ea4\u4e92\u903b\u8f91\u548c\u4ea4\u4e92\u4e2d\u6d89\u53ca\u7684\u8bf7\u6c42\uff0c\u8fdb\u884cMCP\u5185\u90e8\u7684\u62c6\u89e3\uff0c\u63a2\u8ba8MCP\u4e2d\u5b9e\u73b0\u7684BaseSession\uff0cClientSession\uff0cServerSession\u4e09\u4e2a\u57fa\u7840\u7c7b\u3002<\/p>\n<p>blob\/main\/src\/mcp\/client\/session.py<\/p>\n<p>\u9996\u5148\u662f\u6700\u4e3a\u4e3b\u8981\u7684BaseSession\u7c7b\uff0c\u4f5c\u4e3a\u5b9e\u73b0\u5e95\u5c42\u534f\u8bae\u5c42\u7684\u57fa\u7840\u7c7b<\/p>\n<p>\u5176\u8d1f\u8d23\u5177\u4f53\u6d88\u606f\u7684\u5c01\u88c5\uff0c\u8bf7\u6c42\u548c\u54cd\u5e94\u8fd4\u56de\u3002<\/p>\n<p>\u5728\u8fd9\u4e2a\u7c7b\u4e2d\uff0c\u627f\u62c5\u4e86\u5bf9\u4e8e\u4ea4\u4e92\u76f8\u5173\u6d88\u606f\u7684\u7edf\u4e00\u7ba1\u7406\u548c\u8fde\u63a5\u7684\u751f\u547d\u5468\u671f\u7ba1\u7406\u3002<\/p>\n<p>\u5176\u5b9e\u73b0\u4e86\u8bf8\u5982 \u53d1\u51fa\u8bf7\u6c42 \u7b49\u5f85\u54cd\u5e94\uff0c \u53d1\u51fa\u5355\u5411\u901a\u77e5\uff0c\u63a5\u6536\u5e76\u5206\u53d1\u5bf9\u7aef\u6d88\u606f\u7684\u903b\u8f91\u3002<\/p>\n<p>\u65b9\u4fbf\u6d3e\u751f\u7c7b\u7684\u6269\u5c55<\/p>\n<p>\u9488\u5bf9\u5185\u90e8\uff0c\u6211\u4eec\u770b\u4e0b\u76f8\u5173\u7684\u4f2a\u4ee3\u7801<\/p>\n<table>\n<tbody>\n<tr>\n<td>class Session(BaseSession[RequestT, NotificationT, ResultT]):<\/p>\n<p>async def send_request(<\/p>\n<p>self,<\/p>\n<p>request: RequestT,<\/p>\n<p>result_type: type[Result]<\/p>\n<p>) -&gt; Result:<\/p>\n<p>&#8220;&#8221;&#8221;\u53d1\u9001\u8bf7\u6c42\u5e76\u7b49\u5f85\u54cd\u5e94\u3002\u82e5\u54cd\u5e94\u5305\u542b\u9519\u8bef\uff0c\u5219\u629b\u51fa McpError\u3002&#8221;&#8221;&#8221;<\/p>\n<p># \u8bf7\u6c42\u53d1\u9001\u548c\u54cd\u5e94\u5904\u7406\u903b\u8f91<\/p>\n<p>async def send_notification(<\/p>\n<p>self,<\/p>\n<p>notification: NotificationT<\/p>\n<p>) -&gt; None:<\/p>\n<p>&#8220;&#8221;&#8221;\u53d1\u9001\u65e0\u9700\u54cd\u5e94\u7684\u5355\u5411\u901a\u77e5\u3002&#8221;&#8221;&#8221;<\/p>\n<p># \u901a\u77e5\u53d1\u9001\u903b\u8f91<\/p>\n<p>async def _received_request(<\/p>\n<p>self,<\/p>\n<p>responder: RequestResponder[ReceiveRequestT, ResultT]<\/p>\n<p>) -&gt; None:<\/p>\n<p>&#8220;&#8221;&#8221;\u5904\u7406\u5bf9\u65b9\u53d1\u6765\u7684\u8bf7\u6c42\u3002&#8221;&#8221;&#8221;<\/p>\n<p># \u6536\u5230\u8bf7\u6c42\u540e\u7684\u4e1a\u52a1\u5904\u7406<\/p>\n<p>async def _received_notification(<\/p>\n<p>self,<\/p>\n<p>notification: ReceiveNotificationT<\/p>\n<p>) -&gt; None:<\/p>\n<p>&#8220;&#8221;&#8221;\u5904\u7406\u5bf9\u65b9\u53d1\u6765\u7684\u901a\u77e5\u3002&#8221;&#8221;&#8221;<\/p>\n<p># \u6536\u5230\u901a\u77e5\u540e\u7684\u4e1a\u52a1\u5904\u7406<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5728\u8fd9\u4e9b\u51fd\u6570\u7684\u5185\u90e8\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u76f8\u5173\u7684\u6cdb\u578b\uff0c\u8fd9\u4e00\u70b9\u53ef\u4ee5\u5728\u65b9\u6cd5\u7b7e\u540d\u4e0a\u770b\u51fa\uff0c\u5176\u5b9a\u4e49\u4e86\u4ea4\u4e92\u76f8\u5173\u7684\u7c7b\u578b<\/p>\n<table>\n<tbody>\n<tr>\n<td>Generic[<\/p>\n<p>SendRequestT, # \u6211\u4eec\u80fd\u53d1\u51fa\u7684 Request \u7c7b\u578b<\/p>\n<p>SendNotificationT, # \u6211\u4eec\u80fd\u53d1\u51fa\u7684 Notification \u7c7b\u578b<\/p>\n<p>SendResultT, # \u6211\u4eec\u53d1\u51fa\u7684 Response\uff08Result\uff09\u7c7b\u578b<\/p>\n<p>ReceiveRequestT, # \u6211\u4eec\u4f1a\u63a5\u6536\u7684 Request \u7c7b\u578b<\/p>\n<p>ReceiveNotificationT# \u6211\u4eec\u4f1a\u63a5\u6536\u7684 Notification \u7c7b\u578b<\/p>\n<p>ReceiveResultT # \u6211\u4eec\u4f1a\u63a5\u6536\u7684 Response\uff08Result\uff09\u7c7b\u578b<\/p>\n<p>]<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>BaseSession\u7684\u6838\u5fc3\u5c5e\u6027\u5305\u542b\u4ee5\u4e0b\u51e0\u9879<\/p>\n<ol>\n<li>_read_stream \/ _write_stream\uff1aAnyIO \u5185\u5b58\u6d41\uff0c\u7528\u4e8e\u5f02\u6b65\u6536\u53d1 SessionMessage\uff08JSONRPC \u5c01\u88c5 + \u5143\u6570\u636e\uff09\u3002<\/li>\n<li>_request_id\uff1a\u5185\u90e8\u81ea\u589e\u8ba1\u6570\u5668\uff0c\u7528\u6765\u7ed9\u6bcf\u4e2a\u53d1\u51fa\u7684\u8bf7\u6c42\u5206\u914d\u552f\u4e00 ID\u3002<\/li>\n<li>_response_streams: dict[RequestId, MemoryObjectSendStream]\uff1a\u6bcf\u53d1\u4e00\u4e2a\u8bf7\u6c42\u5c31\u5f00\u4e00\u4e2a\u300c\u7b54\u6848\u6d41\u300d\uff0c\u6536\u5230\u5bf9\u5e94 ID \u7684\u54cd\u5e94\u6216\u9519\u8bef\u65f6\u5c31\u5f80\u6d41\u91cc\u5199\uff0csend_request \u5728\u6b64\u6d41\u4e0a\u7b49\u5f85\u7ed3\u679c\u3002<\/li>\n<li>_in_flight: dict[RequestId, RequestResponder]\uff1a\u8ddf\u8e2a\u5f53\u524d\u6b63\u5728\u5904\u7406\u4f46\u5c1a\u672a\u5b8c\u6210\u7684\u5bf9\u7aef\u8bf7\u6c42\uff0c\u65b9\u4fbf\u5728\u6536\u5230\u53d6\u6d88\u901a\u77e5\u65f6\u8fdb\u884c\u6e05\u7406\u6216\u8d85\u65f6\u7ba1\u7406\u3002<\/li>\n<li>_exit_stack\uff1aAnyIO \u7684\u5f02\u6b65\u4e0a\u4e0b\u6587\u7ba1\u7406\u6808\uff0c\u7528\u6765\u7edf\u4e00\u5173\u95ed\u6d41\u548c\u4efb\u52a1\u3002<\/li>\n<\/ol>\n<p>\u9664\u6b64\u5916\u8fd8\u6709\u4e24\u4e2a\u91cd\u8981\u51fd\u6570\uff0c\u5206\u522b\u662faenter \u521b\u5efa\u4e00\u4e2aTaskGroup\u5e76\u542f\u52a8\u4e00\u4e2a_reveive_loop \u6765\u5e76\u884c\u76d1\u542c\u5bf9\u7aef\u6d88\u606f\uff0c aexit \u4f9d\u6b21\u5173\u95ed\u6240\u6709\u8d44\u6e90\uff0c\u53d6\u6d88\u8f6e\u8bad\u63a5\u6536<\/p>\n<p>\u5173\u4e8e\u4e1a\u52a1\u7684\u51fd\u6570\u5219\u662f\u5305\u542b<\/p>\n<ol>\n<li>send_request \u5c06\u9ad8\u5c42\u7684Pydantic\u6a21\u578b\u6253\u5305\u4e3aJSON-RPC\u6d88\u606f\u53d1\u9001\u51fa\u53bb\u3002<\/li>\n<\/ol>\n<p>\u5176\u5185\u90e8\u7684\u903b\u8f91\u4e3a<\/p>\n<p>\u5206\u914d\u8bf7\u6c42ID\uff0c\u4f7f\u7528request_id \u81ea\u589e<\/p>\n<p>\u521b\u5efa\u54cd\u5e94\u6d41\uff0c\u5229\u7528ID\u6ce8\u518c\u4e00\u4e2a\u7f13\u51b2\u5927\u5c0f\u4e3a1\u7684\u5185\u5b58\u6d41<\/p>\n<p>\u6784\u9020 JSONRPCRequest\uff1a\u5c06 Pydantic \u6a21\u578b request \u5e8f\u5217\u5316\u4e3a JSONRPC \u683c\u5f0f\uff0c\u9644\u5e26 ID\u3002<\/p>\n<p>\u4e4b\u540e\u5199\u5165\u53d1\u9001stream\uff0c\u53d1\u7ed9\u5bf9\u7aef<\/p>\n<p>\u7b49\u5f85\u54cd\u5e94<\/p>\n<p>\u5e76\u5728\u51fa\u73b0\u9519\u8bef\u7684\u65f6\u5019\uff0c\u629b\u51fa\u9519\u8bef\u7801<\/p>\n<p>\u6700\u540e\u8fdb\u884c\u6e05\u7406<\/p>\n<ol>\n<li>_send_response() \u65e0\u8bba\u7ed3\u679c\u6210\u529f\u4e0e\u5426\uff0c\u90fd\u4f1a\u751f\u6210JSON-RPC\u54cd\u5e94\u75c5\u534f\u4f1a<\/li>\n<\/ol>\n<p>\u6839\u636e\u7ed3\u679c\u5206\u522b\u6784\u5efaSendResultT\u548cErrorData\u8fdb\u884c\u5199\u5165\u3002<\/p>\n<ol>\n<li>_receive_loop()<\/li>\n<\/ol>\n<p>\u4e0d\u65ad\u5faa\u73af\u4ece\u6d41\u4e2d\u8bfb\u5165\u4efb\u610f\u4e00\u65b9\u7684JSON-RPC\u6d88\u606f\uff0c\u5e76\u5206\u914d\u5230\u8bf7\u6c42\u5904\u7406\uff0c\u56de\u5e94\u5206\u53d1\u7684\u7ba1\u9053\u4e2d<\/p>\n<p>\u5e38\u89c1\u7684\u6bd4\u5982JSONRPCRequest\uff0c\u8fd9\u79cd\u5c31\u5c06\u8bf7\u6c42\u63a5\u6536\u5230\uff0c\u5e76\u63d0\u53d6\u76f8\u5173\u7684\u54cd\u5e94\uff0c\u5c06responder\u4f20\u9012\u7ed9_handle_incoming\u7b49\u94a9\u5b50\u3002<\/p>\n<p>JSONRPCResponse\uff0c\u6839\u636e\u6d88\u606fID\uff0c\u67e5\u627e\u5bf9\u5e94\u7684response_streams\u5e76\u8fdb\u884c\u5199\u5165\u3002\u6700\u7ec8\u7ed9\u4e0a\u5c42\u5efa\u7b51\u8fdb\u884c\u8fd4\u56de\u3002<\/p>\n<p>\u5728BaseSession\u8fd8\u5b9a\u4e49\u4e86\u4e00\u7cfb\u5217\u7684\u94a9\u5b50\u51fd\u6570\uff0c\u65b9\u4fbf\u5b50\u7c7b\u53bb\u5b9e\u73b0\u3002<\/p>\n<p>_received_request(self, responder), _handle_incoming(self, 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