Browse practical debugging workflows for modern HTTP-based protocols and streaming traffic.
- Debug HTTP/2 Traffic: Streams, HPACK & Pseudo-Headers
Inspect HTTP/2 connections — multiplexed streams, HPACK headers, and pseudo-headers
- Debug WebSocket Connections
Inspect WebSocket frames over HTTP/1.1 and HTTP/2 — handshake, opcodes, masking, and close codes
- Debug SSE / EventSource Streams Step by Step
Inspect Server-Sent Events over HTTP/1.1 and HTTP/2 — headers, event payloads, IDs, and timing
- Debug gRPC API Traffic
Inspect gRPC calls over HTTP/2 — streams, framed messages, metadata, and status
- Debug HTTP Traffic with AI Agents over MCP
Use your AI assistant to read and analyze captured traffic over MCP
- CORS Errors: Fix Missing and Mismatched Headers
Find the failed CORS check and verify the server-side fix
- Debug OAuth 2.0 & OIDC Login Flows
Inspect the authorize, callback, and token requests with HTTP Debugger on Windows
- Missing HTTPS Traffic in Windows? Fix Certificate Setup
Set up the local root certificate in Windows, Firefox, and Java to decrypt HTTPS traffic
- Debug localhost & 127.0.0.1 Traffic
Capture loopback HTTP(S) traffic on localhost and 127.0.0.1 from any browser or app, without hosts-file tricks