#!/usr/bin/env python3
"""
Debug script to see what's happening with Railway server responses
"""
import asyncio
import httpx
async def debug_railway_server():
"""Debug what the Railway server is actually returning"""
server_url = "https://mcp-simple-server-dev.up.railway.app"
print(f"🔍 Debugging Railway server: {server_url}")
print("=" * 60)
async with httpx.AsyncClient(timeout=30.0) as client:
# Test 1: Basic connectivity
print("1️⃣ Testing basic connectivity...")
try:
response = await client.get(server_url)
print(f" Status: {response.status_code}")
print(f" Headers: {dict(response.headers)}")
print(f" Content: {response.text[:200]}...")
except Exception as e:
print(f" ❌ Connection error: {e}")
return
# Test 2: MCP endpoint basic check
print("\n2️⃣ Testing MCP endpoint...")
mcp_endpoint = f"{server_url}/mcp/"
try:
response = await client.get(mcp_endpoint)
print(f" Status: {response.status_code}")
print(f" Headers: {dict(response.headers)}")
print(f" Content: {response.text[:200]}...")
except Exception as e:
print(f" ❌ Connection error: {e}")
return
# Test 3: MCP initialize request
print("\n3️⃣ Testing MCP initialize request...")
headers = {
"Content-Type": "application/json",
"MCP-Protocol-Version": "2025-06-18",
"Accept": "application/json, text/event-stream",
}
init_request = {
"jsonrpc": "2.0",
"id": 1,
"method": "initialize",
"params": {
"protocolVersion": "2025-06-18",
"capabilities": {"tools": {}},
"clientInfo": {"name": "debug-test", "version": "1.0.0"},
},
}
try:
response = await client.post(
mcp_endpoint, json=init_request, headers=headers
)
print(f" Status: {response.status_code}")
print(f" Headers: {dict(response.headers)}")
print(f" Content Type: {response.headers.get('content-type')}")
print(f" Raw Content: {response.text[:1000]}...")
if response.status_code == 200:
try:
json_result = response.json()
print(f" ✅ JSON parsed successfully!")
print(f" JSON result: {json_result}")
session_id = response.headers.get("Mcp-Session-Id")
print(f" Session ID: {session_id}")
if session_id:
print("\n🎉 MCP PROTOCOL IS WORKING!")
print("✅ Server is responding correctly to MCP requests")
print("✅ Tools should be available")
else:
print("\n⚠️ No session ID in response headers")
except Exception as json_error:
print(f" ❌ JSON parsing failed: {json_error}")
print(f" 📊 This suggests server returned non-JSON content")
else:
print(f" ❌ Server returned status {response.status_code}")
except Exception as e:
print(f" ❌ Request failed: {e}")
# Test 4: Check if server supports SSE
print("\n4️⃣ Testing Server-Sent Events support...")
sse_headers = headers.copy()
sse_headers["Accept"] = "text/event-stream"
try:
response = await client.post(
mcp_endpoint, json=init_request, headers=sse_headers
)
print(f" SSE Status: {response.status_code}")
print(f" SSE Content Type: {response.headers.get('content-type')}")
print(f" SSE Content: {response.text[:500]}...")
except Exception as e:
print(f" ❌ SSE test failed: {e}")
if __name__ == "__main__":
asyncio.run(debug_railway_server())
