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4043565023
[fix GH-1378][ci skip] Patch by @schneems git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56346 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
244 lines
5.8 KiB
C
244 lines
5.8 KiB
C
/************************************************
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udpsocket.c -
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created at: Thu Mar 31 12:21:29 JST 1994
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Copyright (C) 1993-2007 Yukihiro Matsumoto
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************************************************/
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#include "rubysocket.h"
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/*
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* call-seq:
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* UDPSocket.new([address_family]) => socket
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*
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* Creates a new UDPSocket object.
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*
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* _address_family_ should be an integer, a string or a symbol:
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* Socket::AF_INET, "AF_INET", :INET, etc.
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*
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* require 'socket'
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*
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* UDPSocket.new #=> #<UDPSocket:fd 3>
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* UDPSocket.new(Socket::AF_INET6) #=> #<UDPSocket:fd 4>
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*
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*/
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static VALUE
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udp_init(int argc, VALUE *argv, VALUE sock)
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{
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VALUE arg;
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int family = AF_INET;
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int fd;
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if (rb_scan_args(argc, argv, "01", &arg) == 1) {
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family = rsock_family_arg(arg);
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}
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fd = rsock_socket(family, SOCK_DGRAM, 0);
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if (fd < 0) {
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rb_sys_fail("socket(2) - udp");
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}
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return rsock_init_sock(sock, fd);
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}
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struct udp_arg
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{
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struct rb_addrinfo *res;
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rb_io_t *fptr;
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};
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static VALUE
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udp_connect_internal(struct udp_arg *arg)
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{
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rb_io_t *fptr;
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int fd;
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struct addrinfo *res;
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rb_io_check_closed(fptr = arg->fptr);
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fd = fptr->fd;
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for (res = arg->res->ai; res; res = res->ai_next) {
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if (rsock_connect(fd, res->ai_addr, res->ai_addrlen, 0) >= 0) {
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return Qtrue;
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}
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}
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return Qfalse;
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}
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/*
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* call-seq:
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* udpsocket.connect(host, port) => 0
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*
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* Connects _udpsocket_ to _host_:_port_.
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*
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* This makes possible to send without destination address.
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*
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* u1 = UDPSocket.new
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* u1.bind("127.0.0.1", 4913)
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* u2 = UDPSocket.new
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* u2.connect("127.0.0.1", 4913)
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* u2.send "uuuu", 0
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* p u1.recvfrom(10) #=> ["uuuu", ["AF_INET", 33230, "localhost", "127.0.0.1"]]
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*
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*/
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static VALUE
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udp_connect(VALUE sock, VALUE host, VALUE port)
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{
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struct udp_arg arg;
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VALUE ret;
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GetOpenFile(sock, arg.fptr);
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arg.res = rsock_addrinfo(host, port, rsock_fd_family(arg.fptr->fd), SOCK_DGRAM, 0);
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ret = rb_ensure(udp_connect_internal, (VALUE)&arg,
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rsock_freeaddrinfo, (VALUE)arg.res);
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if (!ret) rsock_sys_fail_host_port("connect(2)", host, port);
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return INT2FIX(0);
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}
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static VALUE
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udp_bind_internal(struct udp_arg *arg)
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{
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rb_io_t *fptr;
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int fd;
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struct addrinfo *res;
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rb_io_check_closed(fptr = arg->fptr);
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fd = fptr->fd;
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for (res = arg->res->ai; res; res = res->ai_next) {
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if (bind(fd, res->ai_addr, res->ai_addrlen) < 0) {
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continue;
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}
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return Qtrue;
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}
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return Qfalse;
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}
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/*
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* call-seq:
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* udpsocket.bind(host, port) #=> 0
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*
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* Binds _udpsocket_ to _host_:_port_.
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*
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* u1 = UDPSocket.new
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* u1.bind("127.0.0.1", 4913)
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* u1.send "message-to-self", 0, "127.0.0.1", 4913
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* p u1.recvfrom(10) #=> ["message-to", ["AF_INET", 4913, "localhost", "127.0.0.1"]]
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*
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*/
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static VALUE
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udp_bind(VALUE sock, VALUE host, VALUE port)
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{
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struct udp_arg arg;
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VALUE ret;
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GetOpenFile(sock, arg.fptr);
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arg.res = rsock_addrinfo(host, port, rsock_fd_family(arg.fptr->fd), SOCK_DGRAM, 0);
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ret = rb_ensure(udp_bind_internal, (VALUE)&arg,
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rsock_freeaddrinfo, (VALUE)arg.res);
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if (!ret) rsock_sys_fail_host_port("bind(2)", host, port);
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return INT2FIX(0);
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}
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struct udp_send_arg {
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struct rb_addrinfo *res;
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rb_io_t *fptr;
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struct rsock_send_arg sarg;
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};
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static VALUE
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udp_send_internal(struct udp_send_arg *arg)
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{
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rb_io_t *fptr;
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int n;
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struct addrinfo *res;
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rb_io_check_closed(fptr = arg->fptr);
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for (res = arg->res->ai; res; res = res->ai_next) {
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retry:
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arg->sarg.fd = fptr->fd;
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arg->sarg.to = res->ai_addr;
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arg->sarg.tolen = res->ai_addrlen;
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rsock_maybe_fd_writable(arg->sarg.fd);
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n = (int)BLOCKING_REGION_FD(rsock_sendto_blocking, &arg->sarg);
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if (n >= 0) {
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return INT2FIX(n);
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}
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if (rb_io_wait_writable(fptr->fd)) {
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goto retry;
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}
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}
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return Qfalse;
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}
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/*
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* call-seq:
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* udpsocket.send(mesg, flags, host, port) => numbytes_sent
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* udpsocket.send(mesg, flags, sockaddr_to) => numbytes_sent
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* udpsocket.send(mesg, flags) => numbytes_sent
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*
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* Sends _mesg_ via _udpsocket_.
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*
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* _flags_ should be a bitwise OR of Socket::MSG_* constants.
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*
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* u1 = UDPSocket.new
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* u1.bind("127.0.0.1", 4913)
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*
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* u2 = UDPSocket.new
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* u2.send "hi", 0, "127.0.0.1", 4913
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*
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* mesg, addr = u1.recvfrom(10)
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* u1.send mesg, 0, addr[3], addr[1]
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*
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* p u2.recv(100) #=> "hi"
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*
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*/
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static VALUE
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udp_send(int argc, VALUE *argv, VALUE sock)
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{
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VALUE flags, host, port;
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struct udp_send_arg arg;
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VALUE ret;
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if (argc == 2 || argc == 3) {
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return rsock_bsock_send(argc, argv, sock);
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}
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rb_scan_args(argc, argv, "4", &arg.sarg.mesg, &flags, &host, &port);
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StringValue(arg.sarg.mesg);
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GetOpenFile(sock, arg.fptr);
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arg.sarg.fd = arg.fptr->fd;
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arg.sarg.flags = NUM2INT(flags);
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arg.res = rsock_addrinfo(host, port, rsock_fd_family(arg.fptr->fd), SOCK_DGRAM, 0);
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ret = rb_ensure(udp_send_internal, (VALUE)&arg,
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rsock_freeaddrinfo, (VALUE)arg.res);
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if (!ret) rsock_sys_fail_host_port("sendto(2)", host, port);
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return ret;
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}
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/* :nodoc: */
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static VALUE
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udp_recvfrom_nonblock(VALUE sock, VALUE len, VALUE flg, VALUE str, VALUE ex)
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{
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return rsock_s_recvfrom_nonblock(sock, len, flg, str, ex, RECV_IP);
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}
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void
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rsock_init_udpsocket(void)
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{
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/*
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* Document-class: UDPSocket < IPSocket
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*
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* UDPSocket represents a UDP/IP socket.
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*
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*/
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rb_cUDPSocket = rb_define_class("UDPSocket", rb_cIPSocket);
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rb_define_method(rb_cUDPSocket, "initialize", udp_init, -1);
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rb_define_method(rb_cUDPSocket, "connect", udp_connect, 2);
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rb_define_method(rb_cUDPSocket, "bind", udp_bind, 2);
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rb_define_method(rb_cUDPSocket, "send", udp_send, -1);
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/* for ext/socket/lib/socket.rb use only: */
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rb_define_private_method(rb_cUDPSocket,
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"__recvfrom_nonblock", udp_recvfrom_nonblock, 4);
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}
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