Ruby 1.9.2p136(2010-12-25revision30365)

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# ext/socket/tcpsocket.c

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    00001 /************************************************
    00002
    00003   tcpsocket.c -
    00004
    00005   created at: Thu Mar 31 12:21:29 JST 1994
    00006
    00007   Copyright (C) 1993-2007 Yukihiro Matsumoto
    00008
    00009 ************************************************/
    00010
    00011 #include "rubysocket.h"
    00012
    00013 /*
    00014  * call-seq:
    00015  *    TCPSocket.new(remote_host, remote_port, local_host=nil, local_port=nil)
    00016  *
    00017  * Opens a TCP connection to +remote_host+ on +remote_port+.  If +local_host+
    00018  * and +local_port+ are specified, then those parameters are used on the local
    00019  * end to establish the connection.
    00020  */
    00021 static VALUE
    00022 tcp_init(int argc, VALUE *argv, VALUE sock)
    00023 {
    00024     VALUE remote_host, remote_serv;
    00025     VALUE local_host, local_serv;
    00026
    00027     rb_scan_args(argc, argv, "22", &remote_host, &remote_serv,
    00028                         &local_host, &local_serv);
    00029
    00030     return rsock_init_inetsock(sock, remote_host, remote_serv,
    00031                                local_host, local_serv, INET_CLIENT);
    00032 }
    00033
    00034 static VALUE
    00035 tcp_sockaddr(struct sockaddr *addr, size_t len)
    00036 {
    00037     return rsock_make_ipaddr(addr);
    00038 }
    00039
    00040 /*
    00041  * call-seq:
    00042  *   TCPSocket.gethostbyname(hostname) => [official_hostname, alias_hostnames, address_family, *address_list]
    00043  *
    00044  * Lookups host information by _hostname_.
    00045  *
    00046  *   TCPSocket.gethostbyname("localhost")
    00047  *   #=> ["localhost", ["hal"], 2, "127.0.0.1"]
    00048  *
    00049  */
    00050 static VALUE
    00051 tcp_s_gethostbyname(VALUE obj, VALUE host)
    00052 {
    00053     rb_secure(3);
    00054     return rsock_make_hostent(host, rsock_addrinfo(host, Qnil, SOCK_STREAM, AI_CANONNAME),
    00055                         tcp_sockaddr);
    00056 }
    00057
    00058 /*
    00059  * Document-class: ::TCPSocket < IPSocket
    00060  *
    00061  * TCPSocket represents a TCP/IP client socket.
    00062  */
    00063 void
    00064 rsock_init_tcpsocket(void)
    00065 {
    00066     rb_cTCPSocket = rb_define_class("TCPSocket", rb_cIPSocket);
    00067     rb_define_singleton_method(rb_cTCPSocket, "gethostbyname", tcp_s_gethostbyname, 1);
    00068     rb_define_method(rb_cTCPSocket, "initialize", tcp_init, -1);
    00069 }
    00070