feat: implement proxy server

main.py

@@ -0,0 +1,51 @@
+from fastapi import FastAPI, Request, Response, HTTPException
+from fastapi.middleware.cors import CORSMiddleware
+import httpx
+import asyncio
+
+app = FastAPI()
+
+# The target Azure VM backend URL
+TARGET_URL = "https://snap-providers-mercy-protocol.trycloudflare.com"
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+@app.api_route("/{path:path}", methods=["GET", "POST", "PUT", "DELETE", "OPTIONS"])
+async def proxy(request: Request, path: str):
+    \"\"\"Forwards all requests to the target backend.\"\"\"
+    url = f"{TARGET_URL}/{path}"
+    
+    if request.method == "OPTIONS":
+        return Response(status_code=200)
+
+    async with httpx.AsyncClient() as client:
+        body = await request.body()
+        headers = dict(request.headers)
+        headers.pop("host", None)
+        
+        try:
+            resp = await client.request(
+                method=request.method,
+                url=url,
+                headers=headers,
+                content=body,
+                timeout=60.0
+            )
+            
+            # Return the original response from the backend
+            return Response(
+                content=resp.content,
+                status_code=resp.status_code,
+                headers=dict(resp.headers)
+            )
+        except httpx.RequestError as e:
+            raise HTTPException(status_code=502, detail=f"Proxy Error: {str(e)}")
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=7860)

requirements.txt

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+fastapi
+uvicorn
+httpx