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49 lines
1.4 KiB
Groff
49 lines
1.4 KiB
Groff
24 years ago
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.TH socket_connect4 3
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.SH NAME
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socket_connect4 \- attempt to make a TCP connection
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.SH SYNTAX
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.B #include <socket.h>
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int \fBsocket_connect4\fP(int \fIs\fR,char \fIip\fR[4],uint16 \fIport\fR);
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.SH DESCRIPTION
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socket_connect4 attempts to make a connection from TCP socket \fIs\fR to
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TCP port \fIport\fR on IP address \fIip\fR.
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socket_connect4 may return
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.sp 1
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.IP \(bu
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0, to indicate that the connection succeeded (and succeeded immediately,
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if the socket is non-blocking)
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.IP \(bu
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-1, setting errno to error_inprogress or error_wouldblock, to indicate
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that the socket is non-blocking
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.IP \(bu
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-1, setting errno to something else, to indicate that the connection
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failed (and failed immediately, if the socket is non-blocking).
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.PP
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When a background connection succeeds or fails, \fIs\fR becomes
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writable; you can use socket_connected to see whether the connection
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succeeded. If the connection failed, socket_connected returns 0,
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setting errno appropriately.
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Once a TCP socket is connected, you can use the read and write
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system calls to transmit data.
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You can call socket_connect4 without calling socket_bind4. This has the
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effect as first calling socket_bind4 with IP address 0.0.0.0 and port 0.
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.SH EXAMPLE
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#include <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_tcp();
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socket_bind4(s,ip,p);
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socket_connect4(s,ip,p);
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.SH "SEE ALSO"
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socket_connect6(3)
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