s

TMP/Practice/sem25.10/c_inet.c

@@ -11,47 +11,54 @@
 
 #define DATA "Hello, World!"
 
-int main(int argc, char *argv[]){
+int main(int argc, char *argv[])
+{
   int sock;
   struct sockaddr_in server;
   struct hostent *hp;
   char buf[1024];
 
-  if (argc < 3) {
+  if (argc < 3)
+  {
     printf("c_inet hostname port [data]\n");
     _exit(1);
   }
 
-  if((sock = socket( AF_INET, SOCK_STREAM, 0)) == -1) {
+  if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
+  {
     perror("opening stream socket");
     exit(1);
   }
 
-  hp=malloc(sizeof(struct hostent));
+  hp = malloc(sizeof(struct hostent));
 
   server.sin_family = AF_INET;
   hp = gethostbyname(argv[1]);
-  if (hp == (struct hostent *) 0) {
+  if (hp == (struct hostent *)0)
+  {
     fprintf(stderr, "%s: unknown host\n", argv[1]);
     exit(2);
   }
-  memcpy((char *) &server.sin_addr, (char *) hp->h_addr, hp->h_length);
+  memcpy((char *)&server.sin_addr, (char *)hp->h_addr, hp->h_length);
   server.sin_port = htons(atoi(argv[2]));
-  if (connect(sock, (struct sockaddr *) &server, sizeof server) == -1) {
+  if (connect(sock, (struct sockaddr *)&server, sizeof server) == -1)
+  {
     perror("connecting stream socket");
     exit(1);
   }
   getchar();
-  memset(buf,0,1024);
+  memset(buf, 0, 1024);
-  if (argc > 3){
+  if (argc > 3)
-    printf("[%s]\n",argv[3]);
+  {
-    strcpy(buf,argv[3]);
+    printf("[%s]\n", argv[3]);
-  }else{
+    strcpy(buf, argv[3]);
-    strcpy(buf,DATA);
+  }
+  else
+  {
+    strcpy(buf, DATA);
   }
   if (write(sock, buf, strlen(buf)) == -1)
     perror("writing on stream socket");
   close(sock);
   exit(0);
 }
-

TMP/Practice/sem25.10/s_inet.c

@@ -7,7 +7,8 @@
 
 #define FIN "exit"
 
-int main(int argc, char *argv[]) {
+int main(int argc, char *argv[])
+{
    int sock;
    socklen_t length;
    struct sockaddr_in server;
@@ -16,47 +17,54 @@ int main(int argc, char *argv[]) {
    int rval;
 
    sock = socket(AF_INET, SOCK_STREAM, 0);
-   if (sock == -1) {
+   if (sock == -1)
+   {
       perror("opening stream socket");
       exit(1);
    }
 
    server.sin_family = AF_INET;
    server.sin_addr.s_addr = htonl(INADDR_ANY);
-   if(argc == 2) server.sin_port = htons(atoi(argv[1]));
+   if (argc == 2)
-   else server.sin_port = 0;
+      server.sin_port = htons(atoi(argv[1]));
+   else
+      server.sin_port = 0;
 
-   if (bind(sock, (struct sockaddr *) &server, sizeof server)  == -1) {
+   if (bind(sock, (struct sockaddr *)&server, sizeof server) == -1)
+   {
       perror("binding stream socket");
       exit(1);
    }
 
    length = sizeof server;
-   if (getsockname(sock,(struct sockaddr *) &server, &length) == -1) {
+   if (getsockname(sock, (struct sockaddr *)&server, &length) == -1)
+   {
       perror("getting socket name");
       exit(1);
    }
    printf("Socket port %d\n", ntohs(server.sin_port));
 
    listen(sock, 5);
-   do {
+   do
-      if ((msgsock = accept(sock,(struct sockaddr *) NULL,(socklen_t *) NULL)) == -1) 
+   {
+      if ((msgsock = accept(sock, (struct sockaddr *)NULL, (socklen_t *)NULL)) == -1)
          perror("accept");
       else
-      do {
+         do
+         {
             memset(buf, 0, sizeof buf);
             if ((rval = read(msgsock, buf, 1024)) == -1)
                perror("reading stream message");
-         dprintf(1,"-[%d]\n",rval);
+            dprintf(1, "-[%d]\n", rval);
             if (rval == 0)
                printf("Connection finished\n");
-         else{
+            else
-            dprintf(1,"[%s]\n",buf);
+            {
+               dprintf(1, "[%s]\n", buf);
             }
-//         if (!strcmp(buf,FIN)) {break;}
+            //         if (!strcmp(buf,FIN)) {break;}
-      } while ((rval > 0) && (strcmp(buf,FIN)));
+         } while ((rval > 0) && (strcmp(buf, FIN)));
       close(msgsock);
-   } while(strcmp(buf,FIN));
+   } while (strcmp(buf, FIN));
    exit(0);
 }
-