Added udpclient #2

csoundbox.c

@@ -37,7 +37,7 @@ int main(int argc, char *argv[]) {
             break;
         case 'i':
             //connect to a csoundbox server
-            
+            inputNetwork(optarg);
             break;
         case 'l':
         default:
@@ -70,6 +70,24 @@ void inputLocal(void) {
     endwin();
 }
 
+void inputNetwork(char *server) {
+    initscr();
+    nonl(); //no newline
+    noecho();
+    keypad(stdscr, FALSE); //Disable the F1-12 keypad
+    curs_set(0); //Disable the cursor
+    
+    printCursesWelcome();
+    
+    char input[2];
+    while ((input[0] = getch()) != 13) {
+        input[1] = '\0';
+        sendKeyUDP(server, input);
+    }
+    
+    endwin();
+}
+
 void printCursesWelcome(void) {
     int y, x;
     getmaxyx(stdscr, y, x);

csoundbox.h

@@ -1,3 +1,4 @@
  
 void inputLocal(void);
 void printCursesWelcome(void);
+void inputNetwork(char *server);

udpserver.c

@@ -50,10 +50,7 @@ void udpserver(void)
     }
      
     //keep listening for data
-    while(1)
-    {
-        //printf("Waiting for data...");
-        //fflush(stdout);
+    while(1) {
         memset(buf,'\0', BUFLEN);
         //try to receive some data, this is a blocking call
         if ((recv_len = recvfrom(s, buf, BUFLEN, 0, (struct sockaddr *) &si_other, (unsigned int *)&slen)) == -1)
@@ -68,12 +65,6 @@ void udpserver(void)
         if (!processUDPInput(buf)) {
             break;
         }
-        
-        //now reply the client with the same data
-        if (sendto(s, buf, recv_len, 0, (struct sockaddr*) &si_other, slen) == -1)
-        {
-            die("sendto()");
-        }
     }
  
     close(s);
@@ -92,3 +83,34 @@ int processUDPInput(char *input) {
     return 1;
 }
 
+
+//Client part
+void sendKeyUDP(char *server, char *message) {
+    struct sockaddr_in si_other;
+    int s, slen=sizeof(si_other);
+    
+    int PORT = cfgreadudpport();
+    
+    if ( (s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
+    {
+            die("socket");
+    }
+
+    memset((char *) &si_other, 0, sizeof(si_other));
+    si_other.sin_family = AF_INET;
+    si_other.sin_port = htons(PORT);
+    
+    if (inet_aton(server , &si_other.sin_addr) == 0) 
+    {
+            fprintf(stderr, "inet_aton() failed\n");
+            exit(1);
+    }
+    
+    //send the message
+    if (sendto(s, message, strlen(message) , 0 , (struct sockaddr *) &si_other, slen)==-1)
+    {
+            die("sendto()");
+    }
+
+    close(s);
+}

udpserver.h

@@ -1,3 +1,4 @@
 void die(char *s); //For debugging
 void udpserver(void); //start the server by calling this function
 int processUDPInput(char *input);
+void sendKeyUDP(char *server, char *message);