feat: 添加 HTTP 传输连接支持，优化 MCP 客户端管理器

Cargo.toml

@@ -45,3 +45,4 @@ rmcp = { git = "https://github.com/modelcontextprotocol/rust-sdk", branch = "mai
     "reqwest",
 ] }
 schemars = "1.0"
+http = "1"

src/mcp/client.rs

@@ -9,7 +9,9 @@ use rmcp::{
     RoleClient, ServiceExt,
     service::RunningService,
     transport::TokioChildProcess,
+    transport::streamable_http_client::{StreamableHttpClientTransport, StreamableHttpClientTransportConfig},
 };
+use http::{HeaderName, HeaderValue};
 use tokio::process::Command;
 
 use crate::mcp::config::{McpServerConfig, McpTransportConfig};
@@ -81,14 +83,8 @@ impl McpClientManager {
             McpTransportConfig::Stdio { command, args, env } => {
                 self.connect_stdio(command, args, env).await?
             }
-            McpTransportConfig::Http { url, headers: _ } => {
-                // HTTP transport requires additional setup
-                // For now, we'll return an error for HTTP transport
-                return Err(anyhow::anyhow!(
-                    "HTTP transport for MCP server '{}' is not yet implemented. URL: {}",
-                    config.name,
-                    url
-                ));
+            McpTransportConfig::Http { url, headers } => {
+                self.connect_http(url, headers).await?
             }
         };
 
@@ -117,7 +113,7 @@ impl McpClientManager {
         Ok(server_info)
     }
 
-    /// Connect via stdio transport
+    /// Connect via stdio transport (spawn child process)
     async fn connect_stdio(
         &self,
         command: &str,
@@ -140,6 +136,43 @@ impl McpClientManager {
         Ok(client)
     }
 
+    /// Connect via HTTP transport (Streamable HTTP)
+    async fn connect_http(
+        &self,
+        url: &str,
+        headers: &HashMap<String, String>,
+    ) -> anyhow::Result<McpClient> {
+        // Build custom headers
+        let custom_headers: HashMap<HeaderName, HeaderValue> = headers
+            .iter()
+            .filter_map(|(key, value)| {
+                // Try to parse header name and value
+                HeaderName::try_from(key.clone())
+                    .ok()
+                    .and_then(|name| {
+                        HeaderValue::try_from(value.clone())
+                            .ok()
+                            .map(|val| (name, val))
+                    })
+            })
+            .collect();
+
+        // Create transport config with custom headers
+        let config = StreamableHttpClientTransportConfig::with_uri(url)
+            .custom_headers(custom_headers);
+
+        // Create transport using reqwest client (default)
+        let transport = StreamableHttpClientTransport::with_client(
+            reqwest::Client::default(),
+            config,
+        );
+
+        // Connect
+        let client = ().serve(transport).await?;
+
+        Ok(client)
+    }
+
     /// Get a client by server name
     pub async fn get_client(&self, name: &str) -> Option<Arc<McpClient>> {
         let clients = self.clients.read().await;