NAME
gnutls_ia_recv - read data from the TLS/IA protocol
SYNOPSIS
#include <gnutls/extra.h>
ssize_t gnutls_ia_recv(gnutls_session_t session, char * data, size_t sizeofdata);
ARGUMENTS
| gnutls_session_t session | is a gnutls_session_t structure. |
| char * data | the buffer that the data will be read into, must hold >= 12 bytes. |
| size_t sizeofdata | the number of requested bytes, must be >= 12. |
DESCRIPTION
Receive TLS/IA data. This function has the similar semantics with recv(). The only difference is that is accepts a GNUTLS session, and uses different error codes.
If the server attempt to finish an application phase, this function will return GNUTLS_E_WARNING_IA_IPHF_RECEIVED or GNUTLS_E_WARNING_IA_FPHF_RECEIVED. The caller should then invoke gnutls_ia_verify_endphase(), and if it runs the client side, also send an endphase message of its own using gnutls_ia_endphase_send.
If EINTR is returned by the internal push function (the default is code{recv()}) then GNUTLS_E_INTERRUPTED will be returned. If GNUTLS_E_INTERRUPTED or GNUTLS_E_AGAIN is returned, you must call this function again, with the same parameters; alternatively you could provide a NULL pointer for data, and 0 for size.
RETURNS
The number of bytes received. A negative error code is returned in case of an error. The GNUTLS_E_WARNING_IA_IPHF_RECEIVED and GNUTLS_E_WARNING_IA_FPHF_RECEIVED errors are returned when an application phase finished message has been sent by the server.
REPORTING BUGS
Report bugs to <bug-gnutls@gnu.org>.
COPYRIGHT
Copyright © 2008 Free Software Foundation. Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies.
SEE ALSO
The full documentation for gnutls is maintained as a Texinfo manual. If the info and gnutls programs are properly installed at your site, the command
| info gnutls | |
