update C snipplets

code/C/unixsocket/client.c

@@ -12,68 +12,67 @@
 #include <unistd.h>
 
 int main(int argc, char *argv[]) {
-    struct sockaddr_un addr;
-    int i;
-    int ret;
-    int data_socket;
-    char buffer[BUFFER_SIZE];
+  struct sockaddr_un addr;
+  int i;
+  int ret;
+  int data_socket;
+  char buffer[BUFFER_SIZE];
 
-    /* Create local socket. */
-    data_socket = socket(AF_UNIX, SOCK_STREAM, 0);
-    if (data_socket == -1) {
-        perror("socket");
-        exit(EXIT_FAILURE);
-    }
+  /* Create local socket. */
+  data_socket = socket(AF_UNIX, SOCK_STREAM, 0);
+  if (data_socket == -1) {
+    perror("socket");
+    exit(EXIT_FAILURE);
+  }
 
-    /*
-     * For portability clear the whole structure, since some
-     * implementations have additional (nonstandard) fields in
-     * the structure.
-     */
-    memset(&addr, 0, sizeof(struct sockaddr_un));
+  /*
+   * For portability clear the whole structure, since some
+   * implementations have additional (nonstandard) fields in
+   * the structure.
+   */
+  memset(&addr, 0, sizeof(struct sockaddr_un));
 
-    /* Connect socket to socket address */
-    addr.sun_family = AF_UNIX;
-    strncpy(addr.sun_path, SOCKET_NAME, sizeof(addr.sun_path) - 1);
+  /* Connect socket to socket address */
+  addr.sun_family = AF_UNIX;
+  strncpy(addr.sun_path, SOCKET_NAME, sizeof(addr.sun_path) - 1);
 
-    ret = connect (data_socket, (const struct sockaddr *) &addr,
-                   sizeof(struct sockaddr_un));
+  ret = connect(data_socket, (const struct sockaddr *)&addr, sizeof(struct sockaddr_un));
+  if (ret == -1) {
+    fprintf(stderr, "The server is down.\n");
+    exit(EXIT_FAILURE);
+  }
+
+  /* Send arguments. */
+  for (i = 1; i < argc; ++i) {
+    ret = write(data_socket, argv[i], strlen(argv[i]) + 1);
     if (ret == -1) {
-        fprintf(stderr, "The server is down.\n");
-        exit(EXIT_FAILURE);
+      perror("write");
+      break;
     }
+  }
 
-    /* Send arguments. */
-    for (i = 1; i < argc; ++i) {
-        ret = write(data_socket, argv[i], strlen(argv[i]) + 1);
-        if (ret == -1) {
-            perror("write");
-            break;
-        }
-    }
+  /* Request result. */
+  strcpy(buffer, "END");
+  ret = write(data_socket, buffer, strlen(buffer) + 1);
+  if (ret == -1) {
+    perror("write");
+    exit(EXIT_FAILURE);
+  }
 
-    /* Request result. */
-    strcpy (buffer, "END");
-    ret = write(data_socket, buffer, strlen(buffer) + 1);
-    if (ret == -1) {
-        perror("write");
-        exit(EXIT_FAILURE);
-    }
+  /* Receive result. */
+  ret = read(data_socket, buffer, BUFFER_SIZE);
+  if (ret == -1) {
+    perror("read");
+    exit(EXIT_FAILURE);
+  }
 
-    /* Receive result. */
-    ret = read(data_socket, buffer, BUFFER_SIZE);
-    if (ret == -1) {
-        perror("read");
-        exit(EXIT_FAILURE);
-    }
+  /* Ensure buffer is 0-terminated. */
+  buffer[BUFFER_SIZE - 1] = 0;
 
-    /* Ensure buffer is 0-terminated. */
-    buffer[BUFFER_SIZE - 1] = 0;
+  printf("Result = %s\n", buffer);
 
-    printf("Result = %s\n", buffer);
+  /* Close socket. */
+  close(data_socket);
 
-    /* Close socket. */
-    close(data_socket);
-
-    exit(EXIT_SUCCESS);
+  exit(EXIT_SUCCESS);
 }