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select: return error from "lethal" poll/select errors

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Adds two new error codes: CURLE_UNRECOVERABLE_POLL and
CURLM_UNRECOVERABLE_POLL one each for the easy and the multi interfaces.

Reported-by: Harry Sintonen
Fixes #8921
Closes #8961
This commit is contained in:
Daniel Stenberg 2022-06-08 11:03:07 +02:00
parent 7007324a6a
commit 5912da253b
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10 changed files with 37 additions and 8 deletions
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4
docs/libcurl/libcurl-errors.3
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@ -265,6 +265,8 @@ QUIC connection error. This error may be caused by an SSL library error. QUIC
is the protocol used for HTTP/3 transfers.
.IP "CURLE_SSL_CLIENTCERT (98)"
SSL Client Certificate required.
.IP "CURLE_UNRECOVERABLE_POLL (99)"
An internal call to poll() or select() returned error that is not recoverable.
.IP "CURLE_OBSOLETE*"
These error codes will never be returned. They were used in an old libcurl
version and are currently unused.
@ -309,6 +311,8 @@ Wakeup is unavailable or failed.
A function was called with a bad parameter.
.IP "CURLM_ABORTED_BY_CALLBACK (11)"
A multi handle callback returned error.
.IP "CURLM_UNRECOVERABLE_POLL (12)"
An internal call to poll() or select() returned error that is not recoverable.
.SH "CURLSHcode"
The "share" interface will return a CURLSHcode to indicate when an error has
occurred. Also consider \fIcurl_share_strerror(3)\fP.