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lib: transfer origin and proxy handling

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Add `data->state.origin` as the origin the transfer is sending the
current request to/gets the response from. Use it for request specific
properties like authentication, hsts and cookie handling, etc.

Unless talking to a forwarding HTTP proxy (e.g. not tunneling),
`data->state.origin` and `conn->origin` are the same.

With a forwarding HTTP proxy in play, `conn->origin` is set to
`conn->http_proxy.peer` and `conn->bits.origin_is_proxy` (a new bit) is
set.

Remove the connection bits, now replaced with:

* `conn->bits.socksproxy` -> `conn->socks_proy.peer`
* `conn->bits.httpproxy` -> `conn->http_proy.peer`
* `conn->bits.proxy` -> `(conn->socks_proy.peer || conn->http_proy.peer`)
* `conn->bits.tunnel_proxy` -> (`conn->http_proy.peer && !conn->bits.origin_is_proxy`)
* `(conn->bits.httpproxy && !conn->bits.tunnel_proxy)` -> `conn->bits.origin_is_proxy`

Rename `noproxy.[ch]` to `proxy.[ch]`. Move the connection proxy setup
code from `url.c` to `proxy.c`.

Remove `data->info.conn_remote_port` as no one uses it.

Add test_40_02b for a SOCKS connection to a forwarding HTTPS proxy.

Update internal documentation about peers and creds.

Closes #21967
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Stefan Eissing 2026-06-12 12:02:08 +02:00 • committed by Daniel Stenberg
parent c951368579
commit 73daec6620
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18
tests/http/test_40_socks.py
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@ -74,6 +74,24 @@ class TestSocks:
else:
r.check_response(http_status=200)
# download via socks to https: proxy (no tunnel)
@pytest.mark.parametrize("sproto", ['socks4', 'socks5'])
@pytest.mark.parametrize("proto", Env.http_h1_h2_protos())
def test_40_02b_socks_https_proxy(self, env: Env, sproto, proto, danted: Dante, httpd):
if proto == 'h2' and not env.curl_uses_lib('nghttp2'):
pytest.skip('only supported with nghttp2')
curl = CurlClient(env=env, socks_args=[
f'--{sproto}', f'127.0.0.1:{danted.port}'
])
url = f'http://localhost:{env.http_port}/data.json'
xargs = curl.get_proxy_args(proto=proto, tunnel=False)
r = curl.http_download(urls=[url], alpn_proto=proto, with_stats=True,
extra_args=xargs)
r.check_response(http_status=200)
exp_http_version = '2' if proto == 'h2' else '1.1'
assert r.stats[0]['proxy_used'] == 1, f'{r}'
assert r.stats[0]['http_version'] == exp_http_version, f'{r}'
@pytest.mark.parametrize("sproto", ['socks4', 'socks5'])
@pytest.mark.parametrize("proto", Env.http_h1_h2_protos())
def test_40_03_dl_serial(self, env: Env, httpd, danted, proto, sproto):