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cfilters: remove close method

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closing a filter chain and reconnecting it again is a complication
that only the HTTP/1.x proxy filter used. Remove it from all filters.

Instead, a filter can return CURLE_AGAIN during the connect phase
and the cf-setup filter will tear down all "sub filters" and restart
over.

With this, a filter never resets to the initial phase but progresses
through connect -> connected -> shutdown -> destroy once.

Closes #21831
This commit is contained in:
Stefan Eissing 2026-06-01 15:31:40 +02:00 • committed by Daniel Stenberg
parent ba600296d2
commit 31cb54e1fa
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21 changed files with 50 additions and 296 deletions
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10
lib/http_proxy.c
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@ -709,22 +709,12 @@ static void http_proxy_cf_destroy(struct Curl_cfilter *cf,
}
}
static void http_proxy_cf_close(struct Curl_cfilter *cf,
struct Curl_easy *data)
{
CURL_TRC_CF(data, cf, "close");
cf->connected = FALSE;
if(cf->next)
cf->next->cft->do_close(cf->next, data);
}
struct Curl_cftype Curl_cft_http_proxy = {
"HTTP-PROXY",
CF_TYPE_IP_CONNECT | CF_TYPE_PROXY | CF_TYPE_SETUP,
0,
http_proxy_cf_destroy,
http_proxy_cf_connect,
http_proxy_cf_close,
Curl_cf_def_shutdown,
Curl_cf_def_adjust_pollset,
Curl_cf_def_data_pending,