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multi: fix polling with pending input

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When multi creates the pollset of a transfer, it checks now if
a connection (FIRST/SECONDARY) socket waits on POLLIN and has input data
pending in filters (relevant to OpenSSL's new read ahead). If so, it
triggers a timeout on the transfer via EXPIRE_RUN_NOW.

This fixes sporadic stalls in test 988 when running event based.

Closes #17636
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Stefan Eissing 2025-06-16 12:19:52 +02:00 • committed by Viktor Szakats
parent 739c09c8a4
commit 62349e45a8
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7
lib/cfilters.h
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@ -620,6 +620,13 @@ void Curl_pollset_check(struct Curl_easy *data,
struct easy_pollset *ps, curl_socket_t sock,
bool *pwant_read, bool *pwant_write);
/**
* Return TRUE if the pollset contains socket with CURL_POLL_IN.
*/
bool Curl_pollset_want_read(struct Curl_easy *data,
struct easy_pollset *ps,
curl_socket_t sock);
/**
* Types and macros used to keep the current easy handle in filter calls,
* allowing for nested invocations. See #10336.