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/* Copyright (c) 2000 Miller Puckette.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in the Pd distribution. */
/* the "pdsend" command. This is a standalone program that forwards messages
from its standard input to Pd via the netsend/netreceive ("FUDI") protocol. */
#include <sys/types.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#ifdef MSW
#include <winsock.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <netdb.h>
#include <stdio.h>
#include <unistd.h>
#define SOCKET_ERROR -1
#endif
void sockerror(char *s);
void x_closesocket(int fd);
#define BUFSIZE 4096
int main(int argc, char **argv)
{
int sockfd, portno, protocol;
struct sockaddr_in server;
struct hostent *hp;
char *hostname;
int nretry = 10;
#ifdef MSW
short version = MAKEWORD(2, 0);
WSADATA nobby;
#endif
if (argc < 2 || sscanf(argv[1], "%d", &portno) < 1 || portno <= 0)
goto usage;
if (argc >= 3)
hostname = argv[2];
else hostname = "127.0.0.1";
if (argc >= 4)
{
if (!strcmp(argv[3], "tcp"))
protocol = SOCK_STREAM;
else if (!strcmp(argv[3], "udp"))
protocol = SOCK_DGRAM;
else goto usage;
}
else protocol = SOCK_STREAM;
#ifdef MSW
if (WSAStartup(version, &nobby)) sockerror("WSAstartup");
#endif
sockfd = socket(AF_INET, protocol, 0);
if (sockfd < 0)
{
sockerror("socket()");
exit(1);
}
/* connect socket using hostname provided in command line */
server.sin_family = AF_INET;
hp = gethostbyname(hostname);
if (hp == 0)
{
fprintf(stderr, "%s: unknown host\n", hostname);
x_closesocket(sockfd);
exit(1);
}
memcpy((char *)&server.sin_addr, (char *)hp->h_addr, hp->h_length);
/* assign client port number */
server.sin_port = htons((unsigned short)portno);
#if 0 /* try this again for 4.0; this crashed my RH 6.2 machine!) */
/* try to connect. */
for (nretry = 0; nretry < (protocol == SOCK_STREAM ? 10 : 1); nretry++)
{
if (nretry > 0)
{
sleep (nretry < 5 ? 1 : 5);
fprintf(stderr, "retrying...");
}
if (connect(sockfd, (struct sockaddr *) &server, sizeof (server)) >= 0)
goto connected;
sockerror("connect");
}
x_closesocket(sockfd);
exit(1);
connected: ;
#else
/* try to connect. */
if (connect(sockfd, (struct sockaddr *) &server, sizeof (server)) < 0)
{
sockerror("connect");
x_closesocket(sockfd);
exit(1);
}
#endif
/* now loop reading stdin and sending it to socket */
while (1)
{
char buf[BUFSIZE], *bp;
int nsent, nsend;
if (!fgets(buf, BUFSIZE, stdin))
break;
nsend = strlen(buf);
for (bp = buf, nsent = 0; nsent < nsend;)
{
int res = send(sockfd, buf, nsend-nsent, 0);
if (res < 0)
{
sockerror("send");
goto done;
}
nsent += res;
bp += res;
}
}
done:
if (ferror(stdin))
perror("stdin");
exit (0);
usage:
fprintf(stderr, "usage: pdsend <portnumber> [host] [udp|tcp]\n");
fprintf(stderr, "(default is localhost and tcp)\n");
exit(1);
}
void sockerror(char *s)
{
#ifdef MSW
int err = WSAGetLastError();
if (err == 10054) return;
else if (err == 10044)
{
fprintf(stderr,
"Warning: you might not have TCP/IP \"networking\" turned on\n");
}
#else
int err = errno;
#endif
fprintf(stderr, "%s: %s (%d)\n", s, strerror(err), err);
}
void x_closesocket(int fd)
{
#ifdef MSW
closesocket(fd);
#else
close(fd);
#endif
}
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