feat: MCP server支持使用sse模式

main/xiaozhi-server/core/mcp/MCPClient.py

@@ -4,6 +4,7 @@ from contextlib import AsyncExitStack
 import os, shutil
 from mcp import ClientSession, StdioServerParameters
 from mcp.client.stdio import stdio_client
+from mcp.client.sse import sse_client
 
 from config.logger import setup_logging
 
@@ -21,29 +22,36 @@ class MCPClient:
     async def initialize(self):
         args = self.config.get("args", [])
 
-        command = (
-            shutil.which("npx")
-            if self.config["command"] == "npx"
-            else self.config["command"]
-        )
-        
-        env={**os.environ}
-        if self.config.get("env"):
-            env.update(self.config["env"])
-        
-        server_params = StdioServerParameters(
-            command=command,
-            args=args,
-            env=env
-        )
-        
-        stdio_transport = await self.exit_stack.enter_async_context(stdio_client(server_params))
-        self.stdio, self.write = stdio_transport
-        time_out_delta =  timedelta(seconds=15)
-        self.session = await self.exit_stack.enter_async_context(ClientSession(read_stream=self.stdio, write_stream=self.write, read_timeout_seconds=time_out_delta))
-        
+        if "command" in self.config:
+            command = (
+                shutil.which("npx")
+                if self.config["command"] == "npx"
+                else self.config["command"]
+            )
+            env = {**os.environ}
+            if self.config.get("env"):
+                env.update(self.config["env"])
+            server_params = StdioServerParameters(
+                command=command,
+                args=args,
+                env=env
+            )
+            stdio_transport = await self.exit_stack.enter_async_context(stdio_client(server_params))
+            self.stdio, self.write = stdio_transport
+            time_out_delta = timedelta(seconds=15)
+            self.session = await self.exit_stack.enter_async_context(
+                ClientSession(read_stream=self.stdio, write_stream=self.write, read_timeout_seconds=time_out_delta)
+            )
+        elif "url" in self.config:
+            sse_transport = await self.exit_stack.enter_async_context(sse_client(self.config["url"]))
+            self.sse_read, self.sse_write = sse_transport
+            self.session = await self.exit_stack.enter_async_context(
+                ClientSession(read_stream=self.sse_read, write_stream=self.sse_write)
+            )
+        else:
+            raise ValueError("MCPClient config must have 'command' or 'url'.")
+
         await self.session.initialize()
-        
         # List available tools
         response = await self.session.list_tools()
         tools = response.tools

main/xiaozhi-server/core/mcp/manager.py

@@ -50,9 +50,9 @@ class MCPManager:
         """初始化所有MCP服务"""
         config = self.load_config()
         for name, srv_config in config.items():
-            if not srv_config.get("command"):
+            if not srv_config.get("command") and not srv_config.get("url"):
                 self.logger.bind(tag=TAG).warning(
-                    f"Skipping server {name}: command not specified"
+                    f"Skipping server {name}: neither command nor url specified"
                 )
                 continue
 

main/xiaozhi-server/mcp_server_settings.json

@@ -26,6 +26,9 @@
       "command": "npx",
       "args": ["-y", "@simonb97/server-win-cli"],
       "link": "https://github.com/SimonB97/win-cli-mcp-server"
+    },
+    "perplexity-ask": {
+      "url": "http://your-server-ip:your-port/sse"
     }
   }
 }

main/xiaozhi-server/requirements.txt

@@ -22,7 +22,7 @@ mem0ai==0.1.62
 bs4==0.0.2
 modelscope==1.23.2
 sherpa_onnx==1.11.0
-mcp==1.4.1
+mcp==1.7.1
 cnlunar==0.2.0
 PySocks==1.7.1
 dashscope==1.23.1