/* 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 #include #include #include #include #ifdef MSW #include #else #include #include #include #include #include #include #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; #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()"); return 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); return 1; } memcpy((char *)&server.sin_addr, (char *)hp->h_addr, hp->h_length); /* assign client port number */ server.sin_port = htons((unsigned short)portno); /* try to connect. */ if (connect(sockfd, (struct sockaddr *) &server, sizeof (server)) < 0) { sockerror("connect"); x_closesocket(sockfd); return 1; } /* now loop reading stdin and sending it to socket */ while (1) { char buf[BUFSIZE], *bp; unsigned 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"); return 0; usage: fprintf(stderr, "usage: pdsend [host] [udp|tcp]\n"); fprintf(stderr, "(default is localhost and tcp)\n"); return 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 }