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If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] .TH sctp_sendmsg 3SOCKET "22 Aug 2007" "SunOS 5.11" "Sockets Library Functions" .SH NAME sctp_sendmsg \- send message from an SCTP socket .SH SYNOPSIS .LP .nf \fBcc\fR [ \fIflag\fR... ] \fIfile\fR... \fB-lsocket\fR \fB -lnsl \fR \fB -lsctp \fR [ \fIlibrary\fR... ] #include #include #include \fBssize_t\fR \fBsctp_sendmsg\fR(\fBint\fR \fIs\fR, \fBconst void *\fR\fImsg\fR, \fBsize_t\fR \fIlen\fR, \fBconst struct sockaddr *\fR\fIto\fR, \fBsocklen_t\fR \fItolen\fR, \fBuint32_t\fR \fIppid\fR, \fBuint32_t\fR \fIflags\fR, \fBuint16_t\fR \fIstream_no\fR, \fBuint32_t\fR \fItimetolive\fR, \fBuint32_t\fR \fIcontext\fR); .fi .SH DESCRIPTION .sp .LP The \fBsctp_sendmsg()\fR function sends a message from the SCTP endpoint \fIs\fR. .sp .LP In addition to specifying \fImsg\fR as the message buffer and \fIlen\fR as the length of the buffer, the following parameters can be set: .sp .ne 2 .mk .na \fB\fIto\fR\fR .ad .RS 14n .rt Destination address .RE .sp .ne 2 .mk .na \fB\fItolen\fR\fR .ad .RS 14n .rt Length of the destination address .RE .sp .ne 2 .mk .na \fB\fIppid\fR\fR .ad .RS 14n .rt Application-specified payload protocol identifier .RE .sp .ne 2 .mk .na \fB\fIstream_no\fR\fR .ad .RS 14n .rt Target stream for the message .RE .sp .ne 2 .mk .na \fB\fItimetolive\fR\fR .ad .RS 14n .rt Time period in milliseconds after which the message expires if transmission for the message has not been started. A value of \fB0\fR indicates that the message does not expire. When the \fBMSG_PR_SCTP\fR flag is set the message expires, even if transmission has started, unless the entire message is transmitted within the \fItimetolive\fR period. .RE .sp .ne 2 .mk .na \fB\fIcontext\fR\fR .ad .RS 14n .rt Value returned when an error occurs in sending a message .RE .sp .LP The \fIflags\fR parameter is formed from the bitwise OR of zero or more of the following flags: .sp .ne 2 .mk .na \fBMSG_UNORDERED\fR .ad .RS 17n .rt This flag requests un-ordered delivery of the message. If this flag is clear the message is considered an ordered send. .RE .sp .ne 2 .mk .na \fBMSG_ABORT\fR .ad .RS 17n .rt When set, this flag causes the specified association to abort by sending an ABORT to the peer. The flag is used only for one-to-many style SCTP socket associations. .RE .sp .ne 2 .mk .na \fBMSG_EOF\fR .ad .RS 17n .rt When set, this flag invokes a graceful shutdown on a specified association. The flag is used only for one-to-many style SCTP socket associations. .RE .sp .ne 2 .mk .na \fBMSG_PR_SCTP\fR .ad .RS 17n .rt This flag indicates that the message is treated as partially reliable. The message expires unless the entire message is successfully transmitted within the time period specified in the \fItimetolive\fR parameter. .sp \fBMSG_PR_SCTP\fR implements \fItimed reliability\fR service for SCTP messages. As yet, no common standard has been defined for the service and the interface is considered unstable. .RE .sp .LP The initial call to \fBsctp_sendmsg()\fR can be used to create an association, but it cannot be used subsequently on an existing association. Since \fBsctp_sendmsg()\fR always uses 0 internally as the association ID, it is not suitable for use on one-to-many sockets. .SH RETURN VALUES .sp .LP Upon successful completion, the \fBsctp_sendmsg()\fR function returns the number of bytes sent. The function returns \fB-1\fR if an error occurs. .SH ERRORS .sp .LP The \fBsctp_sendmsg()\fR function will fail if: .sp .ne 2 .mk .na \fB\fBEBADF\fR\fR .ad .RS 16n .rt The \fIs\fR argument is an invalid file descriptor. .RE .sp .ne 2 .mk .na \fB\fBENOTSOCK\fR\fR .ad .RS 16n .rt The \fIs\fR argument is not a socket. .RE .sp .ne 2 .mk .na \fB\fBEOPNOTSUPP\fR\fR .ad .RS 16n .rt \fBMSG_OOB\fR is set as a \fIflag\fR. .RE .sp .ne 2 .mk .na \fB\fBEOPNOTSUPP\fR\fR .ad .RS 16n .rt \fBMSG_ABORT\fR or \fBMSG_EOF\fR is set on a one-to-one style SCTP socket. .RE .sp .ne 2 .mk .na \fB\fBEPIPE\fR\fR .ad .RS 16n .rt The socket is shutting down and no more writes are allowed. .RE .sp .ne 2 .mk .na \fB\fBEAGAIN\fR\fR .ad .RS 16n .rt The socket is non-blocking and the transmit queue is full. .RE .sp .ne 2 .mk .na \fB\fBENOTCONN\fR\fR .ad .RS 16n .rt There is no established association. .RE .sp .ne 2 .mk .na \fB\fBEINVAL\fR\fR .ad .RS 16n .rt Control message length is incorrect. .RE .sp .ne 2 .mk .na \fB\fBEINVAL\fR\fR .ad .RS 16n .rt Specified destination address does not belong to the association. .RE .sp .ne 2 .mk .na \fB\fBEAFNOSUPPORT\fR\fR .ad .RS 16n .rt Address family of the specified destination address is other than \fBAF_INET\fR or \fBAF_INET6\fR. .RE .SH ATTRIBUTES .sp .LP See \fBattributes\fR(5) for descriptions of the following attributes: .sp .sp .TS tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) . ATTRIBUTE TYPEATTRIBUTE VALUE _ Interface StabilityCommitted _ MT-LevelSafe .TE .SH SEE ALSO .sp .LP \fBaccept\fR(3SOCKET), \fBbind\fR(3SOCKET), \fBconnect\fR(3SOCKET), \fBin.h\fR(3HEAD), \fBlibsctp\fR(3LIB), \fBlisten\fR(3SOCKET), \fBsendmsg\fR(3SOCKET), \fBsocket\fR(3SOCKET), \fBsocket.h\fR(3HEAD), \fBattributes\fR(5), \fBsctp\fR(7P)