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.TH socket_fastopen 3
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.SH NAME
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socket_fastopen \- enable TCP Fast Open on a server-side TCP socket
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.SH SYNTAX
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.B #include <libowfat/socket.h>
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int \fBsocket_fastopen\fP(int \fIs\fR);
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.SH DESCRIPTION
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socket_fastopen enables TCP Fast Open support on a server-side TCP
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socket. Call this before socket_listen(). If the platform does not
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support this functionality, returns -1 and sets errno to ENOPROTOOPT (or
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ENOSYS if the platform does not define ENOPROTOOPT).
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Normally socket_fastopen returns 0. If anything goes wrong, socket_fastopen
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returns -1, setting errno appropriately.
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.SH EXAMPLE
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#include <libowfat/socket.h>
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int \fIs\fR;
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char \fIip\fR[4];
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uint16 \fIp\fR;
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\fIs\fR = socket_tcp4b();
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socket_fastopen(s);
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socket_bind4_reuse(s,ip,p);
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socket_listen(16);
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.SH "SEE ALSO"
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socket_fastopen_connect4(3), socket_fastopen_connect6(3)
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