man gnutls_ia_recv (3): 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 it 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 <[email protected]>. GnuTLS home page: http://www.gnu.org/software/gnutls/ General help using GNU software: http://www.gnu.org/gethelp/

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