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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
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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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lib/ftp.c
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@ -355,7 +355,6 @@ static void close_secondarysocket(struct Curl_easy *data,
{
(void)ftpc;
CURL_TRC_FTP(data, "[%s] closing DATA connection", FTP_CSTATE(ftpc));
Curl_conn_close(data, SECONDARYSOCKET);
Curl_conn_cf_discard_all(data, data->conn, SECONDARYSOCKET);
}