129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Russell Bryant <russell@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*!
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* \file
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* \author Russell Bryant <russell@digium.com>
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*
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* \brief A utility for reading from a raw TCP stream
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*
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* This application is intended for use when a raw TCP stream is desired to be
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* used as a music on hold source for Asterisk. Some devices are capable of
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* taking some kind of audio input and provide it as a raw TCP stream over the
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* network, which is what inspired someone to fund this to be written.
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* However, it would certainly be possible to write your own server application
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* to provide music over a TCP stream from a centralized location.
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*
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* This application is quite simple. It just reads the data from the TCP
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* stream and dumps it straight to stdout. Due to the way Asterisk handles
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* music on hold sources, this application checks to make sure writing
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* to stdout will not be a blocking operation before doing so. If so, the data
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* is just thrown away. This ensures that the stream will continue to be
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* serviced, even if Asterisk is not currently using the source.
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*
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* \todo Update this application to be able to connect to a stream via HTTP,
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* since that is the #1 most requested feature, and it would be quite useful.
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* A lot of people think that is what this is for and email me when it does
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* not work. :)
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*/
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/*** MODULEINFO
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<support_level>extended</support_level>
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***/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <netdb.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__Darwin__) || defined(__CYGWIN__)
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#include <netinet/in.h>
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#endif
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#include <sys/time.h>
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int main(int argc, char *argv[])
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{
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struct sockaddr_in sin;
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struct hostent *hp;
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int s;
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int res;
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char buf[2048];
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fd_set wfds;
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struct timeval tv;
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if (argc != 3) {
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fprintf(stderr, "streamplayer -- A utility for reading from a raw TCP stream.\n");
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fprintf(stderr, "Written for use with Asterisk (http://www.asterisk.org)\n");
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fprintf(stderr, "Copyright (C) 2005 -- Russell Bryant -- Digium, Inc.\n\n");
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fprintf(stderr, "Usage: ./streamplayer <ip> <port>\n");
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exit(1);
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}
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hp = gethostbyname(argv[1]);
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if (!hp) {
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fprintf(stderr, "Unable to lookup IP for host '%s'\n", argv[1]);
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exit(1);
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}
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memset(&sin, 0, sizeof(sin));
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sin.sin_family = AF_INET;
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sin.sin_port = htons(atoi(argv[2]));
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memcpy(&sin.sin_addr, hp->h_addr, sizeof(sin.sin_addr));
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s = socket(AF_INET, SOCK_STREAM, 0);
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if (s < 0) {
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fprintf(stderr, "Unable to allocate socket!\n");
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exit(1);
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}
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res = connect(s, (struct sockaddr *)&sin, sizeof(sin));
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if (res) {
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fprintf(stderr, "Unable to connect to host!\n");
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close(s);
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exit(1);
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}
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while (1) {
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res = read(s, buf, sizeof(buf));
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if (res < 1)
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break;
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memset(&tv, 0, sizeof(tv));
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FD_ZERO(&wfds);
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FD_SET(1, &wfds);
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select(2, NULL, &wfds, NULL, &tv);
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if (FD_ISSET(1, &wfds)) {
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if (write(1, buf, res) < 1) {
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break;
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}
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}
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}
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close(s);
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exit(res);
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}
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