Proxy used for connection to go server or wrong gitlab URL used?

[klement]

Prerequsities

• [ x] I'm on the latest version of the plugin
• [x ] I've installed the required dependencies
• [x ] I've run :h gitlab.nvim.troubleshooting and followed the steps there

Setup Configuration and Environment

I’m using this setup:

			config = function()
				require("gitlab").setup({
					debug = {
						request = true, -- Requests to/from Go server
						response = true,
						gitlab_request = true, -- Requests to/from Gitlab
						gitlab_response = true,
					},
					connection_settings = {
						proxy = "http://user:password@myproxy:myport",
					},
					auth_provider = function()
        					return "secret", "https://gitlab.url", nil
					end,
				})
			end,

Bug Description

I’m getting a “cannot parse JSON response and seeing that it’s a HTML response from tinyproxy saying the website cannot be reached”.

I see this in gitlab.nvim debug log:

-- REQUEST TO GITLAB --
GET /api/v4/projects/REDACTED
Host: REDACTED
Accept: application/json
Private-Token: REDACTED
User-Agent: go-gitlab



-- RESPONSE FROM GITLAB --
HTTP/1.1 200 OK
Transfer-Encoding: chunked
Cache-Control: max-age=0, private, must-revalidate
Connection: keep-alive
Content-Type: application/json
Date: Wed, 25 Mar 2026 20:41:33 GMT
Etag: W/"94e0821b3181f6d74bca775d37662f08"
Nel: {"max_age": 0}
Referrer-Policy: strict-origin-when-cross-origin
Server: nginx
Strict-Transport-Security: max-age=63072000
Vary: Accept-Encoding
Vary: Origin
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Gitlab-Meta: {"correlation_id":"01KMKBPA91EF60G9JPXDXGYX3S","version":"1"}
X-Request-Id: 01KMKBPA91EF60G9JPXDXGYX3S
X-Runtime: 0.105382

e8f
{"id":10,"description":....}}}
0



-- REQUEST TO GO SERVER --
GET /ping HTTP/1.1
Host: localhost:44353
Accept-Encoding: gzip
Private-Token: REDACTED
User-Agent: Go-http-client/1.1



-- RESPONSE FROM GO SERVER --
HTTP/0.0 200 OK
Content-Length: 5
Content-Type: application/json

pong

(the initial response from gitlab is much larger and looks like well-formed JSON containing good response)

I also see this in tinyproxy log:

CONNECT   Mar 25 20:41:29.152 [248]: Connect (file descriptor 5): 10.0.0.163
CONNECT   Mar 25 20:41:29.165 [248]: Request (file descriptor 5): CONNECT gitlab.url:22 HTTP/1.0
CONNECT   Mar 25 20:41:29.166 [248]: Connect (file descriptor 5): 10.0.0.163
CONNECT   Mar 25 20:41:29.167 [248]: Request (file descriptor 5): CONNECT gitlab.url:22 HTTP/1.0
INFO      Mar 25 20:41:29.169 [248]: No upstream proxy for gitlab.url
INFO      Mar 25 20:41:29.170 [248]: opensock: opening connection to gitlab.url:22
INFO      Mar 25 20:41:30.060 [248]: opensock: getaddrinfo returned for gitlab.url:22
CONNECT   Mar 25 20:41:30.198 [248]: Established connection to host "gitlab.url" using file descriptor 6.
INFO      Mar 25 20:41:30.201 [248]: Not sending client headers to remote machine
INFO      Mar 25 20:41:32.209 [248]: Closed connection between local client (fd:5) and remote client (fd:6)
CONNECT   Mar 25 20:41:32.216 [248]: Connect (file descriptor 5): 10.0.0.163
CONNECT   Mar 25 20:41:32.217 [248]: Request (file descriptor 5): CONNECT gitlab.url:443 HTTP/1.1
INFO      Mar 25 20:41:32.218 [248]: No upstream proxy for gitlab.url
INFO      Mar 25 20:41:32.220 [248]: opensock: opening connection to gitlab.url:443
INFO      Mar 25 20:41:32.720 [248]: opensock: getaddrinfo returned for gitlab.url:443
CONNECT   Mar 25 20:41:32.858 [248]: Established connection to host "gitlab.url" using file descriptor 6.
INFO      Mar 25 20:41:32.861 [248]: Not sending client headers to remote machine
CONNECT   Mar 25 20:41:33.402 [248]: Connect (file descriptor 7): 10.0.0.163
CONNECT   Mar 25 20:41:33.405 [248]: Request (file descriptor 7): GET http://localhost:44353/version HTTP/1.1
INFO      Mar 25 20:41:33.406 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.407 [248]: opensock: opening connection to localhost:44353
INFO      Mar 25 20:41:33.409 [248]: opensock: getaddrinfo returned for localhost:44353
ERROR     Mar 25 20:41:33.410 [248]: opensock: Could not establish a connection to localhost:44353
CONNECT   Mar 25 20:41:33.416 [248]: Connect (file descriptor 7): 10.0.0.163
CONNECT   Mar 25 20:41:33.417 [248]: Connect (file descriptor 8): 10.0.0.163
CONNECT   Mar 25 20:41:33.417 [248]: Request (file descriptor 7): POST http://localhost:44353/shutdown HTTP/1.1
CONNECT   Mar 25 20:41:33.419 [248]: Request (file descriptor 8): POST http://localhost:44353/shutdown HTTP/1.1
CONNECT   Mar 25 20:41:33.419 [248]: Connect (file descriptor 10): 10.0.0.163
INFO      Mar 25 20:41:33.420 [248]: No upstream proxy for localhost
CONNECT   Mar 25 20:41:33.417 [248]: Connect (file descriptor 9): 10.0.0.163
INFO      Mar 25 20:41:33.421 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.425 [248]: opensock: opening connection to localhost:44353
CONNECT   Mar 25 20:41:33.422 [248]: Request (file descriptor 10): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.428 [248]: opensock: opening connection to localhost:44353
CONNECT   Mar 25 20:41:33.424 [248]: Connect (file descriptor 16): 10.0.0.163
CONNECT   Mar 25 20:41:33.420 [248]: Connect (file descriptor 11): 10.0.0.163
CONNECT   Mar 25 20:41:33.421 [248]: Connect (file descriptor 13): 10.0.0.163
CONNECT   Mar 25 20:41:33.433 [248]: Request (file descriptor 13): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.427 [248]: opensock: getaddrinfo returned for localhost:44353
CONNECT   Mar 25 20:41:33.421 [248]: Connect (file descriptor 12): 10.0.0.163
INFO      Mar 25 20:41:33.435 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.436 [248]: opensock: opening connection to localhost:44353
CONNECT   Mar 25 20:41:33.429 [248]: Connect (file descriptor 21): 10.0.0.163
CONNECT   Mar 25 20:41:33.424 [248]: Request (file descriptor 9): POST http://localhost:44353/shutdown HTTP/1.1
CONNECT   Mar 25 20:41:33.430 [248]: Connect (file descriptor 22): 10.0.0.163
CONNECT   Mar 25 20:41:33.431 [248]: Request (file descriptor 16): POST http://localhost:44353/shutdown HTTP/1.1
CONNECT   Mar 25 20:41:33.432 [248]: Request (file descriptor 11): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.441 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.442 [248]: opensock: opening connection to localhost:44353
CONNECT   Mar 25 20:41:33.434 [248]: Connect (file descriptor 26): 10.0.0.163
CONNECT   Mar 25 20:41:33.427 [248]: Connect (file descriptor 19): 10.0.0.163
INFO      Mar 25 20:41:33.428 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.448 [248]: opensock: opening connection to localhost:44353
CONNECT   Mar 25 20:41:33.436 [248]: Connect (file descriptor 28): 10.0.0.163
CONNECT   Mar 25 20:41:33.451 [248]: Request (file descriptor 28): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.430 [248]: opensock: getaddrinfo returned for localhost:44353
CONNECT   Mar 25 20:41:33.431 [248]: Connect (file descriptor 23): 10.0.0.163
CONNECT   Mar 25 20:41:33.440 [248]: Request (file descriptor 22): POST http://localhost:44353/shutdown HTTP/1.1
CONNECT   Mar 25 20:41:33.422 [248]: Connect (file descriptor 14): 10.0.0.163
CONNECT   Mar 25 20:41:33.432 [248]: Connect (file descriptor 24): 10.0.0.163
CONNECT   Mar 25 20:41:33.457 [248]: Request (file descriptor 14): POST http://localhost:44353/shutdown HTTP/1.1
CONNECT   Mar 25 20:41:33.458 [248]: Request (file descriptor 12): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.459 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.461 [248]: opensock: opening connection to localhost:44353
CONNECT   Mar 25 20:41:33.428 [248]: Connect (file descriptor 20): 10.0.0.163
INFO      Mar 25 20:41:33.449 [248]: opensock: getaddrinfo returned for localhost:44353
INFO      Mar 25 20:41:33.437 [248]: opensock: getaddrinfo returned for localhost:44353
INFO      Mar 25 20:41:33.438 [248]: No upstream proxy for localhost
CONNECT   Mar 25 20:41:33.438 [248]: Connect (file descriptor 30): 10.0.0.163
CONNECT   Mar 25 20:41:33.454 [248]: Request (file descriptor 23): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.456 [248]: No upstream proxy for localhost
CONNECT   Mar 25 20:41:33.470 [248]: Request (file descriptor 24): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.458 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.473 [248]: opensock: opening connection to localhost:44353
ERROR     Mar 25 20:41:33.459 [248]: opensock: Could not establish a connection to localhost:44353
CONNECT   Mar 25 20:41:33.423 [248]: Connect (file descriptor 15): 10.0.0.163
CONNECT   Mar 25 20:41:33.437 [248]: Connect (file descriptor 29): 10.0.0.163
CONNECT   Mar 25 20:41:33.464 [248]: Request (file descriptor 20): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.452 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.479 [248]: opensock: opening connection to localhost:44353
ERROR     Mar 25 20:41:33.453 [248]: opensock: Could not establish a connection to localhost:44353
CONNECT   Mar 25 20:41:33.425 [248]: Connect (file descriptor 17): 10.0.0.163
CONNECT   Mar 25 20:41:33.483 [248]: Request (file descriptor 17): POST http://localhost:44353/shutdown HTTP/1.1
CONNECT   Mar 25 20:41:33.433 [248]: Connect (file descriptor 25): 10.0.0.163
INFO      Mar 25 20:41:33.444 [248]: opensock: getaddrinfo returned for localhost:44353
CONNECT   Mar 25 20:41:33.486 [248]: Request (file descriptor 25): POST http://localhost:44353/shutdown HTTP/1.1
CONNECT   Mar 25 20:41:33.435 [248]: Connect (file descriptor 27): 10.0.0.163
CONNECT   Mar 25 20:41:33.489 [248]: Request (file descriptor 27): POST http://localhost:44353/shutdown HTTP/1.1
CONNECT   Mar 25 20:41:33.451 [248]: Request (file descriptor 21): POST http://localhost:44353/shutdown HTTP/1.1
ERROR     Mar 25 20:41:33.465 [248]: opensock: Could not establish a connection to localhost:44353
INFO      Mar 25 20:41:33.491 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.493 [248]: opensock: opening connection to localhost:44353
INFO      Mar 25 20:41:33.480 [248]: opensock: getaddrinfo returned for localhost:44353
INFO      Mar 25 20:41:33.469 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.495 [248]: opensock: opening connection to localhost:44353
INFO      Mar 25 20:41:33.485 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.498 [248]: opensock: opening connection to localhost:44353
CONNECT   Mar 25 20:41:33.447 [248]: Request (file descriptor 19): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.474 [248]: opensock: getaddrinfo returned for localhost:44353
INFO      Mar 25 20:41:33.463 [248]: opensock: getaddrinfo returned for localhost:44353
CONNECT   Mar 25 20:41:33.477 [248]: Request (file descriptor 29): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.478 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.504 [248]: opensock: opening connection to localhost:44353
CONNECT   Mar 25 20:41:33.468 [248]: Request (file descriptor 30): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.483 [248]: opensock: opening connection to localhost:44353
INFO      Mar 25 20:41:33.470 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.510 [248]: opensock: opening connection to localhost:44353
ERROR     Mar 25 20:41:33.511 [248]: opensock: Could not establish a connection to localhost:44353
INFO      Mar 25 20:41:33.488 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.514 [248]: opensock: opening connection to localhost:44353
INFO      Mar 25 20:41:33.490 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.516 [248]: opensock: opening connection to localhost:44353
INFO      Mar 25 20:41:33.517 [248]: opensock: opening connection to localhost:44353
INFO      Mar 25 20:41:33.519 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.520 [248]: opensock: opening connection to localhost:44353
CONNECT   Mar 25 20:41:33.426 [248]: Connect (file descriptor 18): 10.0.0.163
INFO      Mar 25 20:41:33.472 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.524 [248]: opensock: opening connection to localhost:44353
INFO      Mar 25 20:41:33.499 [248]: opensock: getaddrinfo returned for localhost:44353
CONNECT   Mar 25 20:41:33.489 [248]: Request (file descriptor 15): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.515 [248]: opensock: getaddrinfo returned for localhost:44353
INFO      Mar 25 20:41:33.503 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.531 [248]: opensock: opening connection to localhost:44353
INFO      Mar 25 20:41:33.505 [248]: opensock: getaddrinfo returned for localhost:44353
INFO      Mar 25 20:41:33.494 [248]: opensock: getaddrinfo returned for localhost:44353
INFO      Mar 25 20:41:33.509 [248]: opensock: getaddrinfo returned for localhost:44353
CONNECT   Mar 25 20:41:33.522 [248]: Request (file descriptor 18): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.511 [248]: opensock: getaddrinfo returned for localhost:44353
INFO      Mar 25 20:41:33.500 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.540 [248]: opensock: opening connection to localhost:44353
ERROR     Mar 25 20:41:33.527 [248]: opensock: Could not establish a connection to localhost:44353
INFO      Mar 25 20:41:33.528 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.542 [248]: opensock: opening connection to localhost:44353
INFO      Mar 25 20:41:33.517 [248]: opensock: getaddrinfo returned for localhost:44353
INFO      Mar 25 20:41:33.519 [248]: opensock: getaddrinfo returned for localhost:44353
ERROR     Mar 25 20:41:33.507 [248]: opensock: Could not establish a connection to localhost:44353
INFO      Mar 25 20:41:33.521 [248]: opensock: getaddrinfo returned for localhost:44353
INFO      Mar 25 20:41:33.496 [248]: opensock: getaddrinfo returned for localhost:44353
INFO      Mar 25 20:41:33.537 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.551 [248]: opensock: opening connection to localhost:44353
ERROR     Mar 25 20:41:33.515 [248]: opensock: Could not establish a connection to localhost:44353
ERROR     Mar 25 20:41:33.501 [248]: opensock: Could not establish a connection to localhost:44353
ERROR     Mar 25 20:41:33.530 [248]: opensock: Could not establish a connection to localhost:44353
INFO      Mar 25 20:41:33.532 [248]: opensock: getaddrinfo returned for localhost:44353
ERROR     Mar 25 20:41:33.533 [248]: opensock: Could not establish a connection to localhost:44353
ERROR     Mar 25 20:41:33.535 [248]: opensock: Could not establish a connection to localhost:44353
ERROR     Mar 25 20:41:33.536 [248]: opensock: Could not establish a connection to localhost:44353
ERROR     Mar 25 20:41:33.549 [248]: opensock: Could not establish a connection to localhost:44353
ERROR     Mar 25 20:41:33.538 [248]: opensock: Could not establish a connection to localhost:44353
INFO      Mar 25 20:41:33.552 [248]: opensock: getaddrinfo returned for localhost:44353
ERROR     Mar 25 20:41:33.467 [248]: opensock: Could not establish a connection to localhost:44353
INFO      Mar 25 20:41:33.544 [248]: opensock: getaddrinfo returned for localhost:44353
ERROR     Mar 25 20:41:33.557 [248]: opensock: Could not establish a connection to localhost:44353
CONNECT   Mar 25 20:41:33.446 [248]: Request (file descriptor 26): POST http://localhost:44353/shutdown HTTP/1.1
INFO      Mar 25 20:41:33.526 [248]: opensock: getaddrinfo returned for localhost:44353
ERROR     Mar 25 20:41:33.570 [248]: opensock: Could not establish a connection to localhost:44353
ERROR     Mar 25 20:41:33.556 [248]: opensock: Could not establish a connection to localhost:44353
ERROR     Mar 25 20:41:33.548 [248]: opensock: Could not establish a connection to localhost:44353
INFO      Mar 25 20:41:33.574 [248]: No upstream proxy for localhost
INFO      Mar 25 20:41:33.575 [248]: opensock: opening connection to localhost:44353
ERROR     Mar 25 20:41:33.568 [248]: opensock: Could not establish a connection to localhost:44353
ERROR     Mar 25 20:41:33.570 [248]: opensock: Could not establish a connection to localhost:44353
ERROR     Mar 25 20:41:33.546 [248]: opensock: Could not establish a connection to localhost:44353
INFO      Mar 25 20:41:33.578 [248]: opensock: getaddrinfo returned for localhost:44353
INFO      Mar 25 20:41:33.564 [248]: opensock: getaddrinfo returned for localhost:44353
ERROR     Mar 25 20:41:33.581 [248]: opensock: Could not establish a connection to localhost:44353
ERROR     Mar 25 20:41:33.583 [248]: opensock: Could not establish a connection to localhost:44353

Note the port number 44353 is the same in gitlab.nvim log and in tinyproxy. I think that it should point to gitlab url instead.

Reproduction Steps

1. Check out the feature branch
2. Open Neovim
3. ...

Screenshots

If applicable, add screenshots to help explain your problem.

[klement]

I had Claude Sonnet have a look at this: its analysis is that environment variables are being used (which I verified to be true by adding a corresponding no_proxy and NO_PROXY environment variables containing “localhost,127.0.0.1”, this restores plugin functionality), forcing curl to use proxy even for local calls. This is quite unexpected user-wise as I would assume that once I configure proxy in gitlab.nvim, any other proxy settings are ignored.

Proposed fix by AI is:

diff --git a/lua/gitlab/job.lua b/lua/gitlab/job.lua
index 3330821..7c10229 100644
--- a/lua/gitlab/job.lua
+++ b/lua/gitlab/job.lua
@@ -6,7 +6,7 @@ local M = {}

 M.run_job = function(endpoint, method, body, callback, on_error_callback)
   local state = require("gitlab.state")
-  local args = { "-s", "-X", (method or "POST"), string.format("localhost:%s", state.settings.port) .. endpoint }
+  local args = { "-s", "--noproxy", "localhost,127.0.0.1", "-X", (method or "POST"), string.format("localhost:%s", state.settings.port) .. endpoint }

   if body ~= nil then
     local encoded_body = vim.json.encode(body)
diff --git a/lua/gitlab/server.lua b/lua/gitlab/server.lua
index d9ff630..e000b4b 100644
--- a/lua/gitlab/server.lua
+++ b/lua/gitlab/server.lua
@@ -185,7 +185,7 @@ M.get_version = function(callback)
   local version_output = vim.system({ "git", "describe", "--tags", "--always" }, { cwd = parent_dir }):wait()
   local plugin_version = version_output.code == 0 and vim.trim(version_output.stdout) or "unknown"

-  local args = { "-s", "-X", "GET", string.format("localhost:%s/version", state.settings.port) }
+  local args = { "-s", "--noproxy", "localhost,127.0.0.1", "-X", "GET", string.format("localhost:%s/version", state.settings.port) }

   -- We call the "/version" endpoint here instead of through the regular jobs pattern because earlier versions of the plugin
   -- may not have it. We handle a 404 as an "unknown" version error.

which looks reasonable. Irregardless of proxy settings, the server is local and should be accessed directly.

I think it should be better documented that the proxy configuration is taken from multiple places.

[jakubbortlik]

Hi @klement, passing --noproxy localhost,127.0.0.1 makes sense. Feel free to open a PR, but I'd wait till #528 is merged because it also touches the lines with state.settings.port and you'd have to deal with a merge conflict.