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tcp_proxy_server.c
86 lines (78 loc) · 2.69 KB
/
tcp_proxy_server.c
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/*
* tcp proxy server
*
* @build: make clean && make examples WITH_OPENSSL=yes
* @http_server: bin/httpd -s restart -d
* @proxy_server: bin/tcp_proxy_server 1080 127.0.0.1:8080
* bin/tcp_proxy_server 1080 127.0.0.1:8443
* bin/tcp_proxy_server 1080 www.baidu.com
* bin/tcp_proxy_server 1080 www.baidu.com:443
* @client: bin/curl -v 127.0.0.1:1080
* bin/nc 127.0.0.1 1080
* > GET / HTTP/1.1
* > Connection: close
* > [Enter]
* > GET / HTTP/1.1
* > Connection: keep-alive
* > [Enter]
*
* @benchmark: sudo apt install iperf
* iperf -s -p 5001
* bin/tcp_proxy_server 1212 127.0.0.1:5001
* iperf -c 127.0.0.1 -p 5001 -l 8K
* iperf -c 127.0.0.1 -p 1212 -l 8K
*/
#include "hloop.h"
#include "hsocket.h"
static char proxy_host[64] = "0.0.0.0";
static int proxy_port = 1080;
static int proxy_ssl = 0;
static char backend_host[64] = "127.0.0.1";
static int backend_port = 80;
static int backend_ssl = 0;
// hloop_create_tcp_server -> on_accept -> hio_setup_tcp_upstream
static void on_accept(hio_t* io) {
/*
printf("on_accept connfd=%d\n", hio_fd(io));
char localaddrstr[SOCKADDR_STRLEN] = {0};
char peeraddrstr[SOCKADDR_STRLEN] = {0};
printf("accept connfd=%d [%s] <= [%s]\n", hio_fd(io),
SOCKADDR_STR(hio_localaddr(io), localaddrstr),
SOCKADDR_STR(hio_peeraddr(io), peeraddrstr));
*/
if (backend_port % 1000 == 443) backend_ssl = 1;
hio_setup_tcp_upstream(io, backend_host, backend_port, backend_ssl);
}
int main(int argc, char** argv) {
if (argc < 3) {
printf("Usage: %s proxy_port backend_host:backend_port\n", argv[0]);
return -10;
}
proxy_port = atoi(argv[1]);
if (proxy_port % 1000 == 443) proxy_ssl = 1;
char* pos = strchr(argv[2], ':');
if (pos) {
int len = pos - argv[2];
if (len > 0) {
memcpy(backend_host, argv[2], len);
backend_host[len] = '\0';
}
backend_port = atoi(pos + 1);
} else {
strncpy(backend_host, argv[2], sizeof(backend_host));
}
if (backend_port == 0) backend_port = 80;
printf("%s:%d proxy %s:%d\n", proxy_host, proxy_port, backend_host, backend_port);
hloop_t* loop = hloop_new(0);
hio_t* listenio = hloop_create_tcp_server(loop, proxy_host, proxy_port, on_accept);
if (listenio == NULL) {
return -20;
}
printf("listenfd=%d\n", hio_fd(listenio));
if (proxy_ssl) {
hio_enable_ssl(listenio);
}
hloop_run(loop);
hloop_free(&loop);
return 0;
}