poll and select already return -1 on error according to POSIX,
so there is no need to perform a <0 to -1 conversion in code.
Also we can just use one check with <= 0 on the return code.
Assisted-by: Daniel Stenberg
Reviewed-by: Jay Satiro
Replaces #5852Closes#5880
Learn from the way Cygwin handles and maps the WinSock events
to simulate correct and complete poll and select behaviour
according to Richard W. Stevens Network Programming book.
Follow up to #5867Closes#5879
Learn from the way Cygwin handles and maps the WinSock events
to simulate correct and complete poll and select behaviour
according to Richard W. Stevens Network Programming book.
Reviewed-by: Jay Satiro
Reviewed-by: Marcel Raad
Follow up to #5634Closes#5867
Setting a timeout to INT_MAX could cause an immediate error to get
returned as timeout because of an overflow when different values of
'now' were used.
This is primarily fixed by having Curl_pgrsTime() return the "now" when
TIMER_STARTSINGLE is set so that the parent function will continue using
that time.
Reported-by: Ionuț-Francisc Oancea
Fixes#5583Closes#5847
USE_TLS_SRP will be true if *any* selected TLS backend can use SRP
HAVE_OPENSSL_SRP is defined when OpenSSL can use it
HAVE_GNUTLS_SRP is defined when GnuTLS can use it
Clarify in the curl_verison_info docs that CURL_VERSION_TLSAUTH_SRP is
set if at least one of the supported backends offers SRP.
Reported-by: Stefan Strogin
Fixes#5865Closes#5870
const struct curl_easyoption *curl_easy_option_by_name(const char *name);
const struct curl_easyoption *curl_easy_option_by_id (CURLoption id);
const struct curl_easyoption *
curl_easy_option_next(const struct curl_easyoption *prev);
The purpose is to provide detailed enough information to allow for
example libcurl bindings to get option information at run-time about
what easy options that exist and what arguments they expect.
Assisted-by: Jeroen Ooms
Closes#5365
The get_cert_location function allocates memory only on success.
Previously get_cert_location was able to allocate memory and return
error. It wasn't obvious and in this case the memory wasn't
released.
Fixes#5855Closes#5860
Currently the file tests/libtest/lib3010 is not getting
ignored by git. This fixes it by adding the 3XXX area to
the according .gitignore file.
Closes#5859
Check readiness of all sockets before waiting on them
to avoid locking in case the one-time event FD_WRITE
was already consumed by a previous wait operation.
More information about WinSock network events:
https://docs.microsoft.com/en-us/windows/win32/api/
winsock2/nf-winsock2-wsaeventselect#return-value
Closes#5634
This avoids using a pair of TCP ports to provide wakeup functionality
for every multi instance on Windows, where socketpair() is emulated
using a TCP socket on loopback which could in turn lead to socket
resource exhaustion.
A previous version of this patch failed to account for how in WinSock,
FD_WRITE is set only once when writing becomes possible and not again
until after a send has failed due to the buffer filling. This contrasts
to how FD_READ and FD_OOB continue to be set until the conditions they
refer to no longer apply. This meant that if a user wrote some data to
a socket, but not enough data to completely fill its send buffer, then
waited on that socket to become writable, we'd erroneously stall until
their configured timeout rather than returning immediately.
This version of the patch addresses that issue by checking each socket
we're waiting on to become writable with select() before the wait, and
zeroing the timeout if it's already writable.
Assisted-by: Marc Hörsken
Reviewed-by: Marcel Raad
Reviewed-by: Daniel Stenberg
Tested-by: Gergely Nagy
Tested-by: Rasmus Melchior Jacobsen
Tested-by: Tomas Berger
Replaces #5397
Reverts #5632Closes#5634
Change Curl_socket_check to use select-fallback in Curl_poll
instead of implementing it in Curl_socket_check and Curl_poll.
Reviewed-by: Daniel Stenberg
Reviewed-by: Jay Satiro
Replaces #5262 and #5492Closes#5707
This commit changes Curl_socket_check to use POLLPRI to
check for connect failure on the write socket, because
POLLPRI maps to fds_err. This is in line with select(2).
The select-based socket check correctly checks for connect
failures by adding the write socket also to fds_err.
The poll-based implementation (which internally can itself
fallback to select again) did not previously check for
connect failure by using POLLPRI with the write socket.
See the follow up commit to this for more information.
This commit makes sure connect failures can be detected
and handled if HAVE_POLL_FINE is defined, eg. on msys2-devel.
Reviewed-by: Daniel Stenberg
Reviewed-by: Jay Satiro
Replaces #5509
Prepares #5707
When amending the include path with "/wolfssl", this now properly strips
off all whitespace from the path variable! Previously this would lead to
pkg-config builds creating bad command lines.
Closes#5848
The buffer only exists during transfer and then we shouldn't change the
size (the setopt is not documented to work then).
Reported-by: Harry Sintonen
Closes#5842
Failures clearly returned from a (SOCKS) proxy now causes this return
code. Previously the situation was not very clear as what would be
returned and when.
In addition: when this error code is returned, an application can use
CURLINFO_PROXY_ERROR to query libcurl for the detailed error, which then
returns a value from the new 'CURLproxycode' enum.
Closes#5770
