mirror of
https://github.com/cesanta/mongoose.git
synced 2024-11-28 13:49:01 +08:00
65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
// Copyright (c) 2020 Cesanta Software Limited
|
|
// All rights reserved
|
|
//
|
|
// Example HTTP client that uses a proxy server. Usage:
|
|
// make
|
|
// ./example PROXY:PORT http://www.ladyada.net
|
|
//
|
|
// To enable SSL/TLS for this client, build it like this:
|
|
// make MBEDTLS_DIR=/path/to/your/mbedtls/installation
|
|
|
|
#include "mongoose.h"
|
|
|
|
// Print HTTP response and signal that we're done
|
|
static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
|
|
const char *url = fn_data;
|
|
static bool connected;
|
|
if (ev == MG_EV_HTTP_MSG) {
|
|
struct mg_http_message *hm = (struct mg_http_message *) ev_data;
|
|
printf("%.*s", (int) hm->message.len, hm->message.ptr);
|
|
exit(EXIT_SUCCESS);
|
|
} else if (ev == MG_EV_CONNECT) {
|
|
// Proxy TCP connection established. Send CONNECT request
|
|
struct mg_str host = mg_url_host(url);
|
|
// c->is_hexdumping = 1;
|
|
mg_printf(c, "CONNECT %.*s:%hu HTTP/1.1\r\nHost: %.*s:%hu\r\n\r\n",
|
|
(int) host.len, host.ptr, mg_url_port(url), (int) host.len,
|
|
host.ptr, mg_url_port(url));
|
|
// If target URL is SSL/TLS, command client connection to use TLS
|
|
if (mg_url_is_ssl(url)) {
|
|
struct mg_tls_opts opts = {.ca = "ca.pem"};
|
|
mg_tls_init(c, &opts);
|
|
}
|
|
} else if (!connected && ev == MG_EV_READ) {
|
|
struct mg_http_message hm;
|
|
int n = mg_http_parse((char *) c->recv.buf, c->recv.len, &hm);
|
|
if (n > 0) {
|
|
struct mg_str host = mg_url_host(url);
|
|
// CONNECT response - tunnel is established
|
|
connected = true;
|
|
LOG(LL_DEBUG,
|
|
("Connected to proxy, status: %.*s", (int) hm.uri.len, hm.uri.ptr));
|
|
mg_iobuf_delete(&c->recv, n);
|
|
// Send request to the target server
|
|
mg_printf(c, "GET / HTTP/1.0\r\nHost: %.*s\r\n\r\n", (int) host.len,
|
|
host.ptr);
|
|
}
|
|
}
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
struct mg_mgr mgr;
|
|
|
|
if (argc != 3) {
|
|
fprintf(stderr, "Usage: %s PROXY_URL URL\n", argv[0]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
mg_mgr_init(&mgr); // Initialise event manager
|
|
mg_http_connect(&mgr, argv[1], fn, argv[2]); // Connect to the proxy
|
|
for (;;) mg_mgr_poll(&mgr, 1000); // Event loop
|
|
mg_mgr_free(&mgr);
|
|
|
|
return 0;
|
|
}
|