[GH-ISSUE #1807] Unable to proxy HTTP requests with Expect: continue header #1799

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opened 2026-03-03 19:54:30 +03:00 by kerem · 0 comments

kerem commented

2026-03-03 19:54:30 +03:00

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Originally created by @dkocher on GitHub (Oct 15, 2023).
Original GitHub issue: https://github.com/ProxymanApp/Proxyman/issues/1807

Description

Proxying a PUT with Expect: 100-continue header causes the client to fail with a connection timeout.

Steps to Reproduce

Proxy a request like

PUT http://localhost.proxyman.io:2222/GB7qQvzO HTTP/1.1
Expect: 100-continue
Content-Length: 4
Content-Type: application/octet-stream
Host: localhost.proxyman.io:2222
Proxy-Connection: Keep-Alive
Accept-Encoding: gzip,deflate
Authorization: ********

Current Behavior

Client application timeout waiting for 100-continue response from server as suggested by RFC 2616 section 8.2.3

Expected Behavior

Proxy should relay server response before method body.

Environment

App version: Version 4.12.0 (49300)
macOS version: 14.0 (23A344)

Originally created by @dkocher on GitHub (Oct 15, 2023). Original GitHub issue: https://github.com/ProxymanApp/Proxyman/issues/1807 ## Description Proxying a `PUT` with `Expect: 100-continue` header causes the client to fail with a connection timeout. ## Steps to Reproduce Proxy a request like ``` PUT http://localhost.proxyman.io:2222/GB7qQvzO HTTP/1.1 Expect: 100-continue Content-Length: 4 Content-Type: application/octet-stream Host: localhost.proxyman.io:2222 Proxy-Connection: Keep-Alive Accept-Encoding: gzip,deflate Authorization: ******** ``` ## Current Behavior Client application timeout waiting for 100-continue response from server as suggested by RFC 2616 section 8.2.3 ## Expected Behavior Proxy should relay server response before method body. ## Environment - App version: Version 4.12.0 (49300) - macOS version: 14.0 (23A344)