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30 lines
783 B
Groff
30 lines
783 B
Groff
24 years ago
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.TH socket_broadcast 3
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.SH NAME
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socket_broadcast \- set UDP socket to broadcast mode
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.SH SYNTAX
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.B #include <socket.h>
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int \fBsocket_broadcast\fP(int \fIs\fR);
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.SH DESCRIPTION
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socket_broadcast sets UDP socket \fIs\fR to broadcast mode.
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socket_send4 and socket_send6 will fail to send packets to the broadcast
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address unless socket_broadcast is called before.
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Normally socket_broadcast returns 0.
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If anything goes wrong, socket_broadcast returns -1, setting errno
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appropriately.
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.SH EXAMPLE
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#include <socket.h>
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int \fIs\fR;
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if ((\fIs\fR=socket_udp6())==-1)
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strerr_die2sys(111,FATAL,"unable to create UDP socket: ");
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if (socket_broadcast(\fIs\fR) == -1)
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strerr_die2sys(111,FATAL,"unable to set broadcast mode: ");
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.SH "SEE ALSO"
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socket_send4(3), socket_send6(3)
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