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Ciro Spaciari c90c0e69cb feat(websocket): add HTTP/HTTPS proxy support (#25614) 
## Summary

Add `proxy` option to WebSocket constructor for connecting through HTTP
CONNECT proxies.

### Features
- Support for `ws://` and `wss://` through HTTP proxies
- Support for `ws://` and `wss://` through HTTPS proxies (with
`rejectUnauthorized: false`)
- Proxy authentication via URL credentials (Basic auth)
- Custom proxy headers support
- Full TLS options (`ca`, `cert`, `key`, etc.) for target connections
using `SSLConfig.fromJS`

### API

```javascript
// String format
new WebSocket("wss://example.com", { proxy: "http://proxy:8080" })

// With credentials
new WebSocket("wss://example.com", { proxy: "http://user:pass@proxy:8080" })

// Object format with custom headers
new WebSocket("wss://example.com", {
  proxy: { url: "http://proxy:8080", headers: { "X-Custom": "value" } }
})

// HTTPS proxy
new WebSocket("ws://example.com", {
  proxy: "https://proxy:8443",
  tls: { rejectUnauthorized: false }
})
```

### Implementation

| File | Changes |
|------|---------|
| `WebSocketUpgradeClient.zig` | Proxy state machine and CONNECT
handling |
| `WebSocketProxyTunnel.zig` | **New** - TLS tunnel inside CONNECT for
wss:// through HTTP proxy |
| `JSWebSocket.cpp` | Parse proxy option and TLS options using
`SSLConfig.fromJS` |
| `WebSocket.cpp` | Pass proxy parameters to Zig, handle HTTPS proxy
socket selection |
| `bun.d.ts` | Add `proxy` and full TLS options to WebSocket types |

### Supported Scenarios

| Scenario | Status |
|----------|--------|
| ws:// through HTTP proxy | ✅ Working |
| wss:// through HTTP proxy | ✅ Working (TLS tunnel) |
| ws:// through HTTPS proxy | ✅ Working (with `rejectUnauthorized:
false`) |
| wss:// through HTTPS proxy | ✅ Working (with `rejectUnauthorized:
false`) |
| Proxy authentication (Basic) | ✅ Working |
| Custom proxy headers | ✅ Working |
| Custom CA for HTTPS proxy |  ✅ Working |

## Test plan

- [x] API tests verify proxy option is accepted in various formats
- [x] Functional tests with local HTTP CONNECT proxy server
- [x] Proxy authentication tests (Basic auth)
- [x] HTTPS proxy tests with `rejectUnauthorized: false`
- [x] Error handling tests (auth failures, wrong credentials)

Run tests: `bun test test/js/web/websocket/websocket-proxy.test.ts`

## Changelog

- Added `proxy` option to `WebSocket` constructor for HTTP/HTTPS proxy
support
- Added full TLS options (`ca`, `cert`, `key`, `passphrase`, etc.) to
`WebSocket` constructor

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
2026-01-08 16:21:34 -08:00
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allocators
perf(linux): add memfd optimizations and typed flags (#25597)
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analytics
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api
feat(bundler): add statically-analyzable dead-code elimination via feature flags (#25462)
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ast
fix(parser): fix bytecode CJS pragma detection after shebang (#25868)
2026-01-08 11:32:08 -08:00
async
feat: add Bun.Terminal API for pseudo-terminal (PTY) support (#25415)
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bake
fix: use JSPromise helper methods instead of direct internal field manipulation (#25889)
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base64
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bun.js
feat(websocket): add HTTP/HTTPS proxy support (#25614)
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bundler
feat(bundler): add files option for in-memory bundling (#25852)
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cli
feat(bundler): add metafile support matching esbuild format (#25842)
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codegen
Upgrade WebKit Dec 24, 2025 (#25684)
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collections
fix(bundler): fix --compile with 8+ embedded files (#25859)
2026-01-06 23:05:01 +00:00
create
Update to zig 0.15.2 (#24204)
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css
perf: pack boolean flags and reorder fields to reduce struct padding (#25627)
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deps
feat(cli): add --grep as alias for -t/--test-name-pattern in bun test (#25788)
2026-01-02 04:52:47 -08:00
errno
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fs
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glob
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http
feat(websocket): add HTTP/HTTPS proxy support (#25614)
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init
Revert "Add Tanstack Start to bun init (#24648)"
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install
fix: correct off-by-one bounds checks in bundler and package installer (#25582)
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interchange
fix(yaml): remove YAML 1.1 legacy boolean values for YAML 1.2 compliance (#25537)
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io
Upgrade WebKit 2025/12/07 (#25429)
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js
feat(websocket): add HTTP/HTTPS proxy support (#25614)
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js_lexer
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libarchive
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meta
Add new bindings generator; port SSLConfig (#23169)
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napi
feat: implement V8 Value type checking APIs (#22462)
2025-12-15 19:50:11 -08:00
node-fallbacks
ENG-21534: Satisfy aikido (#24880)
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paths
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ptr
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resolver
add test for dependency order when a package's name is larger than 8 characters + fix (#25697)
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s3
Add support for Requester Pays in S3 operations (#25514)
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safety
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semver
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shell
feat(shell): add $.trace for analyzing shell commands without execution (#25667)
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sourcemap
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sql
feat(websocket): add HTTP/HTTPS proxy support (#25614)
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string
Improve Bun.stringWidth accuracy and robustness (#25447)
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sys
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test
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threading
perf: shrink ConcurrentTask from 24 bytes to 16 bytes (#25636)
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valkey
Add fake timers for bun:test (#23764)
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vm
Upgrade WebKit Dec 24, 2025 (#25684)
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watcher
Update to zig 0.15.2 (#24204)
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windows
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AGENTS.md
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allocators.zig
Remove MemoryReportingAllocator (#24251)
2025-10-31 19:50:55 -07:00
analytics.zig
Add analytics tracking for CPU profiling and heap snapshots (#25053)
2025-11-26 00:02:43 -08:00
asan-config.c
misc tidyings from another branch (#24406)
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asan.zig
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ast.zig
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bake.bind.ts
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bake.zig
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bits.zig
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boringssl.zig
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brotli.zig
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btjs.zig
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bun.exe.manifest
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bun.ico
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bun.js.zig
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bun.zig
feat(bundler): add statically-analyzable dead-code elimination via feature flags (#25462)
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bunfig.zig
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c-headers-for-zig.h
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cache.zig
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ci_info.zig
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CLAUDE.md
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cli.zig
feat(bundler): add metafile support matching esbuild format (#25842)
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collections.zig
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compile_target.zig
zig: switch exhaustively on os + arch more (#24796)
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comptime_string_map.zig
feat(ENG-21324): Implement hosted_git_info.zig (#24138)
2025-10-29 19:29:04 -07:00
ConfigVersion.zig
add "configVersion" to bun.lock(b) (#24236)
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copy_file.zig
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crash_handler.zig
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csrf.zig
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darwin.zig
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defines-table.zig
fix(build): Promise.all() async module dependencies (#22704)
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defines.zig
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deprecated.zig
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dir.zig
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dns.zig
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env_loader.zig
fix: prevent out-of-bounds access in NO_PROXY parsing (#25617)
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env_var.zig
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env.zig
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fallback-backend.html
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fd.zig
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feature_flags.zig
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fmt.bind.ts
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fmt.zig
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fs.zig
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generated_perf_trace_events.zig
Add Bun.YAML.parse and YAML imports (#22073)
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glob.zig
fix(install): make negative workspace patterns work (#23229)
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Global.zig
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handle_oom.zig
Passthrough anyerror when using handleOom (#23176)
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heap_breakdown.zig
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highway.zig
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hmac.zig
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HTMLScanner.zig
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http.zig
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identity_context.zig
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import_record.zig
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ini.zig
fix: dupe ca string in .npmrc to prevent use-after-free (#25563)
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interchange.zig
Add Bun.YAML.parse and YAML imports (#22073)
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js_lexer_tables.zig
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js_lexer.zig
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js_parser.zig
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js_printer.zig
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jsc_stub.zig
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linear_fifo.zig
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linker.lds
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linker.zig
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linux.zig
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logger.zig
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macho.zig
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main_test.zig
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main_wasm.zig
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main.zig
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memory.zig
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meta.zig
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open.zig
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options.zig
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output.zig
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OutputFile.zig
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patch.zig
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paths.zig
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pe.zig
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perf.zig
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pool.zig
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Progress.zig
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ptr.zig
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renamer.zig
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result.zig
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router.zig
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runtime.js
fix(build): Promise.all() async module dependencies (#22704)
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runtime.zig
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safety.zig
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semver.zig
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sha.zig
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SignalCode.zig
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StandaloneModuleGraph.zig
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StaticHashMap.zig
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string.zig
fix(buffer): handle string allocation failures in encoding operations (#25214)
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symbols.def
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symbols.dyn
feat: implement V8 Value type checking APIs (#22462)
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symbols.txt
feat: implement V8 Value type checking APIs (#22462)
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sys_uv.zig
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sys.zig
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system_timer.zig
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threading.zig
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tmp.zig
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tracy.zig
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trait.zig
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transpiler.zig
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tsconfig.json
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unit_test.zig
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url.zig
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util.zig
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walker_skippable.zig
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Watcher.zig
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which_npm_client.zig
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windows.zig
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work_pool.zig
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workaround_missing_symbols.zig
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wyhash.zig
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zlib.test.gz
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zlib.zig
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