2 /* gcc -O2 -g -pedantic -Wall fgfsclient.c -o fgfsclient */
10 #include <sys/socket.h>
12 #include <netinet/in.h>
17 #define DFLTHOST "localhost"
20 #define fgfsclose close
23 void init_sockaddr(struct sockaddr_in *name, const char *hostname, unsigned port);
24 int fgfswrite(int sock, char *msg, ...);
25 const char *fgfsread(int sock, int wait);
26 void fgfsflush(int sock);
30 int fgfswrite(int sock, char *msg, ...)
37 vsprintf(buf, msg, va);
39 printf("SEND: \t<%s>\n", buf);
40 strcat(buf, "\015\012");
42 len = write(sock, buf, strlen(buf));
52 const char *fgfsread(int sock, int timeout)
54 static char buf[MAXMSG];
64 if (!select(32, &ready, 0, 0, &tv))
67 len = read(sock, buf, MAXMSG - 1);
75 for (p = &buf[len - 1]; p >= buf; p--)
76 if (*p != '\015' && *p != '\012')
79 return strlen(buf) ? buf : NULL;
84 void fgfsflush(int sock)
87 while ((p = fgfsread(sock, 0)) != NULL) {
88 printf("IGNORE: \t<%s>\n", p);
94 int fgfsconnect(const char *hostname, const int port)
96 struct sockaddr_in serv_addr;
97 struct hostent *hostinfo;
100 sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
102 perror("fgfsconnect/socket");
106 hostinfo = gethostbyname(hostname);
107 if (hostinfo == NULL) {
108 fprintf(stderr, "fgfsconnect: unknown host: \"%s\"\n", hostname);
113 serv_addr.sin_family = AF_INET;
114 serv_addr.sin_port = htons(port);
115 serv_addr.sin_addr = *(struct in_addr *)hostinfo->h_addr;
117 if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
118 perror("fgfsconnect/connect");
127 int main(int argc, char **argv)
131 const char *hostname, *p;
133 hostname = argc > 1 ? argv[1] : DFLTHOST;
134 port = argc > 2 ? atoi(argv[2]) : DFLTPORT;
136 sock = fgfsconnect(hostname, port);
138 return (EXIT_FAILURE);
140 fgfswrite(sock, "data");
141 fgfswrite(sock, "set /controls/engines/engine[%d]/throttle %d", 0, 1);
142 fgfswrite(sock, "get /sim/aircraft");
143 p = fgfsread(sock, 3);
145 printf("READ: \t<%s>\n", p);
146 fgfswrite(sock, "quit");