gnutls_record_recv(3) [suse man page]
gnutls_record_recv(3) gnutls gnutls_record_recv(3) NAME
gnutls_record_recv - reads data from the TLS record protocol SYNOPSIS
#include <gnutls/gnutls.h> ssize_t gnutls_record_recv(gnutls_session_t session, void * data, size_t sizeofdata); ARGUMENTS
gnutls_session_t session is a gnutls_session_t structure. void * data the buffer that the data will be read into size_t sizeofdata the number of requested bytes DESCRIPTION
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 a server requests a renegotiation, the client may receive an error code of GNUTLS_E_REHANDSHAKE. 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. If EINTR is returned by the internal push function (the default is recv()) then GNUTLS_E_INTERRUPTED will be returned. If GNUTLS_E_INTER- RUPTED or GNUTLS_E_AGAIN is returned, you must call this function again to get the data. See also gnutls_record_get_direction(). A server may also receive GNUTLS_E_REHANDSHAKE when a client has initiated a handshake. In that case the server can only initiate a hand- shake or terminate the connection. RETURNS
the number of bytes received and zero on EOF. A negative error code is returned in case of an error. The number of bytes received might be less than sizeofdata. REPORTING BUGS
Report bugs to <bug-gnutls@gnu.org>. GnuTLS home page: http://www.gnu.org/software/gnutls/ General help using GNU software: http://www.gnu.org/gethelp/ COPYRIGHT
Copyright (C) 2008 Free Software Foundation. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. 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 should give you access to the complete manual. gnutls 2.8.6 gnutls_record_recv(3)
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gnutls_record_send(3) gnutls gnutls_record_send(3) NAME
gnutls_record_send - API function SYNOPSIS
#include <gnutls/gnutls.h> ssize_t gnutls_record_send(gnutls_session_t session, const void * data, size_t data_size); ARGUMENTS
gnutls_session_t session is a gnutls_session_t structure. const void * data contains the data to send size_t data_size is the length of the data DESCRIPTION
This function has the similar semantics with send(). The only difference is that it accepts a GnuTLS session, and uses different error codes. Note that if the send buffer is full, send() will block this function. See the send() documentation for full information. You can replace the default push function by using gnutls_transport_set_ptr2() with a call to send() with a MSG_DONTWAIT flag if blocking is a problem. If the EINTR is returned by the internal push function (the default is send()) 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. cf. gnutls_record_get_direction(). The errno value EMSGSIZE maps to GNUTLS_E_LARGE_PACKET. RETURNS
The number of bytes sent, or a negative error code. The number of bytes sent might be less than data_size . The maximum number of bytes this function can send in a single call depends on the negotiated maximum record size. REPORTING BUGS
Report bugs to <bug-gnutls@gnu.org>. General guidelines for reporting bugs: http://www.gnu.org/gethelp/ GnuTLS home page: http://www.gnu.org/software/gnutls/ COPYRIGHT
Copyright (C) 2012 Free Software Foundation, Inc.. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. 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 should give you access to the complete manual. As an alternative you may obtain the manual from: http://www.gnu.org/software/gnutls/manual/ gnutls 3.1.15 gnutls_record_send(3)