Here is the Node.js code:
net = require('net');
fs = require('fs');
serverSocketFile = '/tmp/_mediaComm';
if (fs.existsSync(serverSocketFile))
fs.unlinkSync(serverSocketFile);
var server = net.createServer((socket) => {
console.log("Connection received.");
socket.on('data', (data) => {
//console.log(...);
});
//...
});
server.on('error', (err) => {
console.log("Error:" + err);
});
server.listen(serverSocketFile, () => {
fs.chmodSync(serverSocketFile, '0777');
});
I start it first. The socket file created is:
ls -l /tmp/_mediaComm
srwxrwxrwx 1 usr1 usr1 0 May 27 16:28 /tmp/_mediaComm
Here is relevant part of the C client code
int retStatus;
struct sockaddr_un clientUnixSocket;
struct sockaddr_un serverUnixSocket;
int fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_NONBLOCK, 0);
if (fd < 0) {
perror("Socket create error");
};
clientUnixSocket.sun_family = AF_UNIX;
strcpy(clientUnixSocket.sun_path, "/tmp/_clientComm");
unlink("/tmp/_clientComm");
if (bind(fd, (struct sockaddr *)&clientUnixSocket, sizeof(clientUnixSocket)) < 0) {
perror("Client bind error");
}
serverUnixSocket.sun_family = AF_UNIX;
strcpy(serverUnixSocket.sun_path, "/tmp/_mediaComm");
printf("Sending data...\n");
retStatus = sendto(fd, "Hi", 2, 0, (struct sockaddr *) &serverUnixSocket, sizeof(struct sockaddr_un));
if (retStatus == -1) {
perror("SENDTO ERROR");
}
else {
printf("Data sent!\n");
}
I get the following error from the C program:
Sending data...
SENDTO ERROR: Protocol wrong type for socket
- What am I missing in the C code? Also
- How do we tell the Node server to be in DGRAM and not STREAM mode?
