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91 changes: 60 additions & 31 deletions src/client.c
Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@

/**
* Struct to hold all three pieces of a URL
*/
*/
typedef struct urlinfo_t {
char *hostname;
char *port;
Expand All @@ -31,24 +31,43 @@ urlinfo_t *parse_url(char *url)
char *hostname = strdup(url);
char *port;
char *path;

urlinfo_t *urlinfo = malloc(sizeof(urlinfo_t));
char *https = strstr(hostname, "https://");
if (https != NULL)
{
hostname = https + strlen("https://");
*https = '\0';
}
else
{
char *http = strstr(hostname, "http://");

if (http != NULL)
{
hostname = http + strlen("http://");
*http = '\0';
}
}

/*
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).
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.
*/

///////////////////
// IMPLEMENT ME! //
///////////////////

char *first_backslash = strchr(hostname, '/');
path = first_backslash + 1;
*first_backslash = '\0';
char *first_colon = strchr(hostname, ':');
if (first_colon == NULL)
{
port = "80";
urlinfo->port = port;
}
else
{
port = first_colon + 1;
*first_colon = '\0';
urlinfo->port = port;
}

urlinfo->path = path;
urlinfo->hostname = hostname;
return urlinfo;
}

Expand All @@ -68,11 +87,17 @@ int send_request(int fd, char *hostname, char *port, char *path)
char request[max_request_size];
int rv;

///////////////////
// IMPLEMENT ME! //
///////////////////
sprintf(request, "GET /%s HTTP/1.1\n"
"Host: %s:%s\n"
"Connection: close\n\n", path, hostname, port);
printf("%s\n", request);
rv = send(fd, request, strlen(request), 0);

return 0;
if (rv < 0) {
perror("send");
}

return rv;
}

int main(int argc, char *argv[])
Expand All @@ -85,17 +110,21 @@ int main(int argc, char *argv[])
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.
*/
urlinfo_t *urlinfo = parse_url(argv[1]);
sockfd = get_socket(urlinfo->hostname, urlinfo->port);
int rv = send_request(sockfd, urlinfo->hostname, urlinfo->port, urlinfo->path);

///////////////////
// IMPLEMENT ME! //
///////////////////
if (rv < 0) {
perror("send");
}

while ((numbytes = recv(sockfd, buf, BUFSIZE - 1, 0)) > 0)
{
printf("%s\n", buf);
}
free(urlinfo->hostname);
free(urlinfo);
close(sockfd);

return 0;
}