PacketProxy

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  "desc": "Local proxy written in Java",
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  "enrichment_fetched_at": "2026-06-20T22:47:54+00:00",
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  "full_token": "packetproxy",
  "github_default_branch": "master",
  "github_last_commit_at": "2026-06-19T00:48:30Z",
  "github_readme_excerpt": "![PacketProxy](./assets/images/packetproxy.png)\n\n[![CircleCI](https://circleci.com/gh/DeNA/PacketProxy/tree/master.svg?style=svg)](https://circleci.com/gh/DeNA/PacketProxy/tree/master)\n\n[\u65e5\u672c\u8a9e\u306eREADME\u306f\u3053\u3053](https://github.com/DeNA/PacketProxy/blob/master/README.ja.md)\n\n# About PacketProxy\n\nPacketProxy is an open-source proxy tool that can intercept and inspect any protocol over TCP/UDP, not limited to just HTTP/1.x, HTTP2, or HTTPS.\n\nPacketProxy is designed for testing web applications for internal use, which helps app development and finding vulnerabilities on your applications.\n\n# Screenshot\n\n![ScreenShot](./assets/images/screenshot.gif)\n\n# Features\n\n- **Full-featured local proxy tool**\n  - Save all captured packets (i.e., requests and responses) and show them in the history tab\n  - Filter/Search packets in the history tab (e.g. `requests==/api/v1/users` to show only requests whose path contains `/api/v1/users` )\n  - Modify the contents of intercepted packets before forwarding them to the destination\n  - Resend (or replay) captured packets with or without manually modifying the contents\n  - Show differences between any two received packets\n- **Support for protocols over TCP/UDP, not limited to HTTP/HTTPS**\n  - Built-in encoders/decoders enable users to inspect/intercept HTTP1, HTTP2, HTTPS, WebSocket, FireBase, Firestore, MQTT, gRPC, Protocol Buffers, XMPP on TLS, MessagePack, CBOR, and AmazonLexV2 messages\n  - Easy to develop an extension to decode/encode protocols not listed above\n- **Features for application penetration tests**\n  - Send multiple packets simultaneously to test race conditions or any inconsistent state due to improper synchronization/locking.\n  - Even possible to simultaneously send packets with different messages. ( `Bulk Sender` )\n  - Replace a server certificate with a self-signed one for testing if a client app properly validate certificates\n  - Embedded an easy to configure DNS server to route requests from a client to PacketProxy, which is one o",
  "github_repo": "DeNA/PacketProxy",
  "github_stars": 475,
  "github_topics": [
    "grpc",
    "http2",
    "java",
    "linux",
    "macos",
    "proxy",
    "windows"
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  "homepage": "https://github.com/DeNA/PacketProxy",
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  "ruby_source_path": "Casks/p/packetproxy.rb",
  "tap": "homebrew/cask",
  "token": "packetproxy",
  "version": "2.3.0",
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