added man pages and ..._reuse socket bind functions.
parent
0c36e167de
commit
2e8427998a
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.TH socket_accept4 3
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.SH NAME
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socket_accept4 \- accept an IPv4 TCP connection on a socket
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.SH SYNTAX
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.B #include <socket.h>
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int \fBsocket_accept4\fP(int \fIs\fR,char \fIip\fR[4],uint16 *\fIport\fR);
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.SH DESCRIPTION
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When a TCP connection arrives on a listening TCP socket \fIs\fR, the
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socket becomes readable.
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socket_accept4 accepts the connection. It sets \fIip\fR and \fIport\fR
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to the client IP address and client TCP port. It creates a new socket
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for the connection, and returns a file descriptor pointing to the new
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socket; you can use the read and write system calls to transmit data
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through that file descriptor.
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If something goes wrong, socket_accept4 returns -1, setting errno
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appropriately, without creating a new socket.
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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_accept6(3), socket_connected(3)
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@ -0,0 +1,36 @@
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.TH socket_accept6 3
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.SH NAME
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socket_accept6 \- accept an IPv6 TCP connection on a socket
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.SH SYNTAX
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.B #include <socket.h>
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int \fBsocket_accept6\fP(int \fIs\fR,char \fIip\fR[16],uint16 *\fIport\fR,uint32 *\fIscope_id\fR);
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.SH DESCRIPTION
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When a TCP connection arrives on a listening TCP socket \fIs\fR, the
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socket becomes readable.
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socket_accept6 accepts the connection. It sets \fIip\fR and \fIport\fR
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to the client IP address and client TCP port and \fIscope_id\fR to the
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IPv6 scope ID. It creates a new socket for the connection, and returns
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a file descriptor pointing to the new socket; you can use the read and
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write system calls to transmit data through that file descriptor.
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If \fIscope_id\fR is the null pointer, socket_accept6 will discard the
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scope ID.
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If something goes wrong, socket_accept6 returns -1, setting errno
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appropriately, without creating a new socket.
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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[16];
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uint16 \fIp\fR;
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\fIs\fR = socket_tcp6();
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socket_bind6(s,ip,p);
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socket_connect6(s,ip,p);
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.SH "SEE ALSO"
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socket_accept4(3), socket_connected(3)
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.TH socket_bind4 3
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.SH NAME
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socket_bind4 \- set the local IP address and port of a socket
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.SH SYNTAX
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.B #include <socket.h>
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int \fBsocket_bind4\fP(int \fIs\fR,char \fIip\fR[4],uint16 \fIport\fR);
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.SH DESCRIPTION
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socket_bind4 sets the local IP address and TCP/UDP port of a TCP/UDP
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socket \fIs\fR to \fIip\fR and \fIport\fR respectively.
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If the IP address is 0.0.0.0, the operating system chooses a local IP
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address. If \fIport\fR is 0, the operating system chooses a port.
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Normally socket_bind4 returns 0. If anything goes wrong, socket_bind4
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returns -1, setting errno 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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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_bind6(3)
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#include <sys/socket.h>
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#include "socket.h"
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int socket_bind4_reuse(int s,const char *ip,uint16 port) {
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int one=1;
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setsockopt(s,SOL_SOCKET,SO_REUSEADDR,&one,sizeof one);
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return socket_bind4(s,ip,port);
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}
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.TH socket_bind6 3
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.SH NAME
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socket_bind6 \- set the local IP address and port of a socket
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.SH SYNTAX
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.B #include <socket.h>
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int \fBsocket_bind6\fP(int \fIs\fR,char \fIip\fR[16],uint16 \fIport\fR);
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.SH DESCRIPTION
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socket_bind6 sets the local IP address and TCP/UDP port of a TCP/UDP
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socket \fIs\fR to \fIip\fR and \fIport\fR respectively.
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If the IP address is ::, the operating system chooses a local IP
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address. If \fIport\fR is 0, the operating system chooses a port.
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Normally socket_bind6 returns 0. If anything goes wrong, socket_bind6
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returns -1, setting errno 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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char \fIip\fR[16];
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uint16 \fIp\fR;
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\fIs\fR = socket_tcp6();
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socket_bind6(s,ip,p);
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socket_connect6(s,ip,p);
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.SH "SEE ALSO"
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socket_bind4(3)
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#include <sys/socket.h>
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#include "socket.h"
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int socket_bind6_reuse(int s,const char *ip,uint16 port,uint32 scope_id) {
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int one=1;
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setsockopt(s,SOL_SOCKET,SO_REUSEADDR,&one,sizeof one);
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return socket_bind6(s,ip,port,scope_id);
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}
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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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.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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.TH socket_connect6 3
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.SH NAME
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socket_connect6 \- 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_connect6\fP(int \fIs\fR,char \fIip\fR[16],uint16 \fIport\fR,uint32 \fIscope_id\fR);
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.SH DESCRIPTION
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socket_connect6 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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The meaning of \fIscope_id\fR is dependent on the implementation and
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IPv6 IP. On link-local IPv6 addresses it specifies the outgoing
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interface index. The name (e.g. "eth0") for a given interface index can
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be queried with getifname. \fIscope_id\fR should normally be set to 0.
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socket_connect6 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_connect6 without calling socket_bind6. This has the
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effect as first calling socket_bind6 with IP address :: 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[16];
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uint16 \fIp\fR;
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\fIs\fR = socket_tcp6();
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socket_bind6(s,ip,p);
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socket_connect6(s,ip,p,0);
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.SH "SEE ALSO"
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socket_connect4(3), socket_getifname(3)
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.TH socket_listen 3
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.SH NAME
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socket_listen \- 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_listen\fP(int \fIs\fR,int \fIn\fR);
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.SH DESCRIPTION
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socket_listen prepares TCP socket \fIs\fR to accept TCP connections. It
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allows a backlog of approximately \fIn\fR TCP SYNs. (On systems
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supporting SYN cookies, the backlog is irrelevant.) Normally
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socket_listen returns 0.
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If anything goes wrong, socket_listen 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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char \fIip\fR[16];
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uint16 \fIp\fR;
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if ((\fIs\fR=socket_tcp6())==-1)
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strerr_die2sys(111,FATAL,"unable to create TCP socket: ");
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if (socket_bind6_reuse(\fIs\fR,(char *)V6any,8002,0) == -1)
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strerr_die2sys(111,FATAL,"unable to bind: ");
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if (socket_listen(\fIs\fR,1) == -1)
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strerr_die2sys(111,FATAL,"unable to listen: ");
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.SH "SEE ALSO"
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socket_connect4(3), socket_connect6(3)
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.TH socket_local4 3
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.SH NAME
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socket_local4 \- get local IP address of socket
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.SH SYNTAX
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.B #include <socket.h>
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int \fBsocket_local4\fP(int \fIs\fR,char \fIip\fR[4],uint16 *\fIport\fR);
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.SH DESCRIPTION
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socket_local4 returns the local IP address and port for the UDP or TCP
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socket \fIs\fR and writes the IP address to \fIip\fR and the port to
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\fIport\fR.
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If something goes wrong, socket_local4 returns -1, setting errno
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appropriately.
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.SH "SEE ALSO"
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socket_accept4(3), socket_remote4(3)
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.TH socket_local6 3
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.SH NAME
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socket_local6 \- get local IP address of socket
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.SH SYNTAX
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.B #include <socket.h>
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int \fBsocket_local6\fP(int \fIs\fR,char \fIip\fR[16],uint16 *\fIport\fR,uint32 *\fIscope_id\fR);
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.SH DESCRIPTION
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socket_local6 returns the local IPv6 address, port and scope ID for the
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UDP or TCP socket \fIs\fR and writes the IPv6 address to \fIip\fR, the
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port to \fIport\fR and the scope ID to \fIscope_id\fR.
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If \fIscope_id\fR is the null pointer, socket_local6 will discard the
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scope ID.
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If something goes wrong, socket_local6 returns -1, setting errno
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appropriately.
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.SH "SEE ALSO"
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socket_accept6(3), socket_remote6(3)
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.TH socket_mcjoin4 3
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.SH NAME
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socket_mcjoin4 \- join a multicast group
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.SH SYNTAX
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.B #include <socket.h>
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int \fBsocket_mcjoin4\fP(int \fIs\fR,const char \fIgroupip\fR[4],const char \fIinterface\fR[4]);
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.SH DESCRIPTION
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socket_mcjoin4 joins the IPv4 multicast group \fIgroupip\fR on \fIinterface\fR.
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TODO
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socket \fIs\fR and writes the IP address to \fIip\fR and the port to
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\fIport\fR.
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If something goes wrong, socket_local4 returns -1, setting errno
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appropriately.
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.SH "SEE ALSO"
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socket_accept4(3), socket_remote4(3)
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@ -0,0 +1,16 @@
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.TH socket_remote4 3
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.SH NAME
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||||||
|
socket_remote4 \- get remote IP address of socket
|
||||||
|
.SH SYNTAX
|
||||||
|
.B #include <socket.h>
|
||||||
|
|
||||||
|
int \fBsocket_remote4\fP(int \fIs\fR,char \fIip\fR[4],uint16 *\fIport\fR);
|
||||||
|
.SH DESCRIPTION
|
||||||
|
socket_remote4 returns the remote IP address and port for the UDP or TCP
|
||||||
|
socket \fIs\fR and writes the IP address to \fIip\fR and the port to
|
||||||
|
\fIport\fR.
|
||||||
|
|
||||||
|
If something goes wrong, socket_remote4 returns -1, setting errno
|
||||||
|
appropriately.
|
||||||
|
.SH "SEE ALSO"
|
||||||
|
socket_accept4(3), socket_local4(3)
|
@ -0,0 +1,19 @@
|
|||||||
|
.TH socket_remote6 3
|
||||||
|
.SH NAME
|
||||||
|
socket_remote6 \- get remote IP address of socket
|
||||||
|
.SH SYNTAX
|
||||||
|
.B #include <socket.h>
|
||||||
|
|
||||||
|
int \fBsocket_remote6\fP(int \fIs\fR,char \fIip\fR[16],uint16 *\fIport\fR,uint32 *\fIscope_id\fR);
|
||||||
|
.SH DESCRIPTION
|
||||||
|
socket_remote6 returns the remote IPv6 address, port and scope ID for the
|
||||||
|
UDP or TCP socket \fIs\fR and writes the IPv6 address to \fIip\fR, the
|
||||||
|
port to \fIport\fR and the scope ID to \fIscope_id\fR.
|
||||||
|
|
||||||
|
If \fIscope_id\fR is the null pointer, socket_remote6 will discard the
|
||||||
|
scope ID.
|
||||||
|
|
||||||
|
If something goes wrong, socket_remote6 returns -1, setting errno
|
||||||
|
appropriately.
|
||||||
|
.SH "SEE ALSO"
|
||||||
|
socket_accept6(3), socket_local6(3)
|
@ -0,0 +1,29 @@
|
|||||||
|
.TH socket_tcp 3
|
||||||
|
.SH NAME
|
||||||
|
socket_tcp \- create a non-blocking TCP/IP stream socket
|
||||||
|
.SH SYNTAX
|
||||||
|
.B #include <socket.h>
|
||||||
|
|
||||||
|
int \fBsocket_tcp\fP();
|
||||||
|
.SH DESCRIPTION
|
||||||
|
socket_tcp creates a non-blocking TCP/IP stream socket and returns a
|
||||||
|
file descriptor pointing to that socket. If something goes wrong,
|
||||||
|
socket_tcp returns -1, setting errno appropriately, without allocating
|
||||||
|
any resources.
|
||||||
|
|
||||||
|
.SH EXAMPLE
|
||||||
|
#include <socket.h>
|
||||||
|
|
||||||
|
int \fIs\fR;
|
||||||
|
char \fIip\fR[4];
|
||||||
|
uint16 \fIp\fR;
|
||||||
|
|
||||||
|
\fIs\fR = socket_tcp();
|
||||||
|
socket_bind4(s,ip,p);
|
||||||
|
socket_connect4(s,ip,p);
|
||||||
|
|
||||||
|
.SH BUGS
|
||||||
|
It is called socket_tcp instead of socket_tcp4 to be compatible with DJ
|
||||||
|
Bernstein's original implementation.
|
||||||
|
.SH "SEE ALSO"
|
||||||
|
socket_bind4(3), socket_bind6(3)
|
@ -0,0 +1,26 @@
|
|||||||
|
.TH socket_tcp6 3
|
||||||
|
.SH NAME
|
||||||
|
socket_tcp \- create a non-blocking IPv6 TCP/IP stream socket
|
||||||
|
.SH SYNTAX
|
||||||
|
.B #include <socket.h>
|
||||||
|
|
||||||
|
int \fBsocket_tcp6\fP();
|
||||||
|
.SH DESCRIPTION
|
||||||
|
socket_tcp creates a non-blocking IPv6 TCP/IP stream socket and returns a
|
||||||
|
file descriptor pointing to that socket. If something goes wrong,
|
||||||
|
socket_tcp returns -1, setting errno appropriately, without allocating
|
||||||
|
any resources.
|
||||||
|
|
||||||
|
.SH EXAMPLE
|
||||||
|
#include <socket.h>
|
||||||
|
|
||||||
|
int \fIs\fR;
|
||||||
|
char \fIip\fR[16];
|
||||||
|
uint16 \fIp\fR;
|
||||||
|
|
||||||
|
\fIs\fR = socket_tcp6();
|
||||||
|
socket_bind6(s,ip,p);
|
||||||
|
socket_connect6(s,ip,p,0);
|
||||||
|
|
||||||
|
.SH "SEE ALSO"
|
||||||
|
socket_bind4(3), socket_bind6(3)
|
Loading…
Reference in New Issue