Fini exo1

01-emetteurUDPv4/sender-udp.c

@@ -13,17 +13,35 @@
 
 int main (int argc, char *argv [])
 {
-    /* test arg number */
+    const char* phrase= "hello world";
+
+    if(argc!=2)
+    {
+        perror("Invalid argument's number\n");
+        exit(EXIT_FAILURE);
+    }
 
     /* convert and check port number */
+    int port_number = atoi(argv[1]);
+    if(port_number < 10000 || port_number > 65000){
+        perror("Invalid port number\n");
+        exit(EXIT_FAILURE);
+    }
 
     /* create socket */
+    int new_socket=socket(AF_INET,SOCK_DGRAM,0);
+    CHECK(new_socket);
 
     /* complete sockaddr struct */
-
+    struct sockaddr_storage socket_storage;
+    struct sockaddr_in *socket_pointer = (struct sockaddr_in *) &socket_storage;
+    socket_pointer->sin_family = AF_INET;
+    socket_pointer->sin_port=PORT(port_number);
+    socket_pointer->sin_addr.s_addr=IP;
+    
     /* send message to remote peer */
-
+    CHECK(sendto(new_socket,phrase,strlen(phrase),0,(struct sockaddr *)socket_pointer,sizeof(struct sockaddr_in)));
     /* close socket */
-
+    close(new_socket);
     return 0;
 }