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curl: fix --upload-file . hangs if delay in STDIN

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Attempt to unpause a busy read in the CURLOPT_XFERINFOFUNCTION.

When uploading from stdin in non-blocking mode, a delay in reading
the stream (EAGAIN) causes curl to pause sending data
(CURL_READFUNC_PAUSE).  Prior to this change, a busy read was
detected and unpaused only in the CURLOPT_WRITEFUNCTION handler.
This change performs the same busy read handling in a
CURLOPT_XFERINFOFUNCTION handler.

Fixes #2051
Closes #4599
Reported-by: bdry on github
This commit is contained in:
John Schroeder 2019-11-26 09:16:19 +01:00 • committed by Daniel Stenberg
parent 7cf18b05e0
commit 9a2cbf30b8
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6 changed files with 63 additions and 4 deletions
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8
src/tool_cb_rea.h
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@ -29,4 +29,12 @@
size_t tool_read_cb(void *buffer, size_t sz, size_t nmemb, void *userdata);
/*
** callback for CURLOPT_XFERINFOFUNCTION used to unpause busy reads
*/
int tool_readbusy_cb(void *clientp,
curl_off_t dltotal, curl_off_t dlnow,
curl_off_t ultotal, curl_off_t ulnow);
#endif /* HEADER_CURL_TOOL_CB_REA_H */