Initial commit

src/socketHelp.c

@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+int createSocket(int port, int *server_fd, struct sockaddr_in *address, int *addrlen) {
+	int opt = 1;
+
+	// Create socket fd
+	if ((*server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
+		perror("socket failed");
+		exit(EXIT_FAILURE);
+	}
+
+	// Attach socket to PORT
+	if (setsockopt(*server_fd, SOL_SOCKET, SO_REUSEADDR |SO_REUSEPORT,
+				&opt, sizeof(opt))) {
+		perror("Set socket opt failure");
+		exit(EXIT_FAILURE);
+	}
+	address->sin_family = AF_INET;
+	address->sin_addr.s_addr = INADDR_ANY;
+	address->sin_port = htons (port);
+
+	// Attach to PORT
+	if (bind(*server_fd, (struct sockaddr *)address,
+				sizeof(*address))<0) {
+		perror("Failed to bind");
+		exit(EXIT_FAILURE);
+	}
+
+	if (listen(*server_fd, 3) < 0) {
+		perror("Failed to listen");
+		exit(EXIT_FAILURE);
+	}
+
+	return 0;
+}