Modify handleMessage to check request method (#22)

* Modify handleMessage to check request method

* Update deno.json

Author: mcandeia

deno.json

@@ -1,6 +1,6 @@
 {
   "name": "@deco/mcp",
-  "version": "0.7.7",
+  "version": "0.7.8",
   "exports": {
     ".": "./mod.ts",
     "./http": "./mcp/http.ts"

mcp/http.ts

@@ -20,7 +20,7 @@ export class HttpServerTransport extends StreamableHTTPServerTransport {
 
   async handleMessage(req: Request): Promise<Response> {
     const { req: nodeReq, res } = toReqRes(req);
-    super.handleRequest(nodeReq, res, await req.json().catch(() => null));
+    super.handleRequest(nodeReq, res, req.method === "GET" ? null : await req.json().catch(() => null));
     return toFetchResponse(res);
   }
 }