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@deftypefun {int} {gnutls_system_recv_timeout} (gnutls_transport_ptr_t @var{ptr}, unsigned int @var{ms})
@var{ptr}: A file descriptor (wrapped in a gnutls_transport_ptr_t pointer)
@var{ms}: The number of milliseconds to wait.
Wait for data to be received from the provided socket ( @code{ptr} ) within a
timeout period in milliseconds, using @code{select()} on the provided @code{ptr} .
This function is provided as a helper for constructing custom
callbacks for @code{gnutls_transport_set_pull_timeout_function()} ,
which can be used if you rely on socket file descriptors.
Returns -1 on error, 0 on timeout, positive value if data are available for reading.
@strong{Since:} 3.4.0
@end deftypefun
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