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gnutls_record_recv(3) gnutls gnutls_record_recv(3)


gnutls_record_recv - API function


#include <gnutls/gnutls.h>

ssize_t gnutls_record_recv(gnutls_session_t session, void * data, size_t data_size);


is a gnutls_session_t type.
the buffer that the data will be read into
the number of requested bytes


This function has the similar semantics with recv(). The only difference is that it accepts a GnuTLS session, and uses different error codes. In the special case that the peer requests a renegotiation, the caller will receive an error code of GNUTLS_E_REHANDSHAKE. In case of a client, this message may be simply ignored, replied with an alert GNUTLS_A_NO_RENEGOTIATION, or replied with a new handshake, depending on the client's will. A server receiving this error code can only initiate a new handshake or terminate the session.

If EINTR is returned by the internal pull function (the default is recv()) then GNUTLS_E_INTERRUPTED will be returned. If GNUTLS_E_INTERRUPTED or GNUTLS_E_AGAIN is returned, you must call this function again to get the data. See also gnutls_record_get_direction().


The number of bytes received and zero on EOF (for stream connections). A negative error code is returned in case of an error. The number of bytes received might be less than the requested data_size .


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