Max Kajiwara

src/client.c

@@ -12,7 +12,8 @@
 /**
  * Struct to hold all three pieces of a URL
  */
-typedef struct urlinfo_t {
+typedef struct urlinfo_t
+{
   char *hostname;
   char *port;
   char *path;
@@ -34,20 +35,26 @@ urlinfo_t *parse_url(char *url)
 
   urlinfo_t *urlinfo = malloc(sizeof(urlinfo_t));
 
-  /*
-    We can parse the input URL by doing the following:
+  // 1. Use strchr to find the first backslash in the URL (this is assuming there is no http:// or https:// in the URL).
+  char *backslash = strchr(hostname, '/');
+
+  // 2. Set the path pointer to 1 character after the spot returned by strchr.
+  path = backslash + 1;
+
+  // 3. Overwrite the backslash with a '\0' so that we are no longer considering anything after the backslash.
+  *backslash = '\0';
+
+  // 4. Use strchr to find the first colon in the URL.
+  char *colon = strchr(hostname, ':');
 
-    1. Use strchr to find the first backslash in the URL (this is assuming there is no http:// or https:// in the URL).
-    2. Set the path pointer to 1 character after the spot returned by strchr.
-    3. Overwrite the backslash with a '\0' so that we are no longer considering anything after the backslash.
-    4. Use strchr to find the first colon in the URL.
-    5. Set the port pointer to 1 character after the spot returned by strchr.
-    6. Overwrite the colon with a '\0' so that we are just left with the hostname.
-  */
+  // 5. Set the port pointer to 1 character after the spot returned by strchr.
+  port = colon + 1;
 
-  ///////////////////
-  // IMPLEMENT ME! //
-  ///////////////////
+  // 6. Overwrite the colon with a '\0' so that we are just left with the hostname.
+  *colon = '\0';
+
+  urlinfo->port = port;
+  urlinfo->path = path;
 
   return urlinfo;
 }
@@ -68,34 +75,54 @@ int send_request(int fd, char *hostname, char *port, char *path)
   char request[max_request_size];
   int rv;
 
-  ///////////////////
-  // IMPLEMENT ME! //
-  ///////////////////
+  int request_length = sprintf(request, "GET /%s HTTP/1.1\n"
+                                        "Connection: close\n"
+                                        "Host: %s:%s\n"
+                                        "\n",
+                               path, hostname, port);
 
-  return 0;
+  rv = send(fd, request, request_length, 0);
+
+  if (rv < 0)
+  {
+    perror("send");
+  }
+
+  return rv;
 }
 
 int main(int argc, char *argv[])
-{  
-  int sockfd, numbytes;  
+{
+  int sockfd, numbytes;
   char buf[BUFSIZE];
 
-  if (argc != 2) {
-    fprintf(stderr,"usage: client HOSTNAME:PORT/PATH\n");
+  if (argc != 2)
+  {
+    fprintf(stderr, "usage: client HOSTNAME:PORT/PATH\n");
     exit(1);
   }
 
-  /*
-    1. Parse the input URL
-    2. Initialize a socket by calling the `get_socket` function from lib.c
-    3. Call `send_request` to construct the request and send it
-    4. Call `recv` in a loop until there is no more data to receive from the server. Print the received response to stdout.
-    5. Clean up any allocated memory and open file descriptors.
-  */
-
-  ///////////////////
-  // IMPLEMENT ME! //
-  ///////////////////
+  // 1. Parse the input URL
+  char *url = argv[1];
+  urlinfo_t *urlinfo = parse_url(url);
+
+  // 2. Initialize a socket by calling the `get_socket` function from lib.c
+  sockfd = get_socket(urlinfo->hostname, urlinfo->port);
+
+  // 3. Call `send_request` to construct the request and send it
+  send_request(sockfd, urlinfo->hostname, urlinfo->port, urlinfo->path);
+
+  // 4. Call `recv` in a loop until there is no more data to receive from the server. Print the received response to stdout.
+  while ((numbytes = recv(sockfd, buf, BUFSIZE - 1, 0)) > 0)
+  {
+    printf("%s\n", buf);
+  }
+
+  // 5. Clean up any allocated memory and open file descriptors.
+  free(urlinfo->hostname);
+  free(urlinfo);
+
+  close(sockfd);
 
   return 0;
 }