cleaned UDP code a bit

tello-vision.cpp

@@ -9,8 +9,8 @@
 #include <arpa/inet.h> 
 #include <netinet/in.h> 
 
-#define PORT    11112 
-#define MAXLINE 1024 
+#define MATLAB_PORT    11112 
+#define MAXLINE        1024 
 
 using namespace cv;
 
@@ -18,8 +18,8 @@ int main(int argc, char** argv) {
 
     int sockfd; 
     char buffer[MAXLINE]; 
-    char hello[] = "x:12;y:34;";
-    struct sockaddr_in servaddr, cliaddr; 
+    char hello[] = "x:15;y:34;";
+    struct sockaddr_in cliaddr; 
 
     // Creating socket file descriptor 
     if ( (sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0 ) { 
@@ -27,27 +27,12 @@ int main(int argc, char** argv) {
         exit(EXIT_FAILURE); 
     } 
 
-    memset(&servaddr, 0, sizeof(servaddr)); 
     memset(&cliaddr, 0, sizeof(cliaddr)); 
 
-    // Filling server information 
-    servaddr.sin_family    = AF_INET; // IPv4 
-    servaddr.sin_addr.s_addr = INADDR_ANY; 
-    servaddr.sin_port = htons(PORT+1);
-
     // Filling cliaddr information 
     cliaddr.sin_family    = AF_INET; // IPv4 
     cliaddr.sin_addr.s_addr = INADDR_ANY; 
-    cliaddr.sin_port = htons(PORT);
-
-    // Bind the socket with the server address 
-    if ( bind(sockfd, (const struct sockaddr *)&servaddr,  
-            sizeof(servaddr)) < 0 ) { 
-        perror("bind failed"); 
-        exit(EXIT_FAILURE); 
-    } 
-
-    int len, n; 
+    cliaddr.sin_port = htons(MATLAB_PORT);
 
     Mat frame;