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Add listen address to proxy (C and python).

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This allows forwarding from an external port to the same port on
localhost (loopback). I.e.

./utils/wsproxy `hostname -f`:5901 localhost:5901
This commit is contained in:
Joel Martin
2010-06-16 12:37:03 -05:00
parent f755ca9631
commit f2898eabd3
5 changed files with 83 additions and 27 deletions
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33
utils/websocket.c
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@@ -12,6 +12,7 @@
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <openssl/err.h>
#include <openssl/ssl.h>
@@ -326,9 +327,11 @@ ws_ctx_t *do_handshake(int sock) {
}
void start_server(int listen_port,
void (*handler)(ws_ctx_t*)) {
int lsock, csock, clilen, sopt = 1;
void (*handler)(ws_ctx_t*),
char *listen_host) {
int lsock, csock, clilen, sopt = 1, i;
struct sockaddr_in serv_addr, cli_addr;
struct hostent *lhost;
ws_ctx_t *ws_ctx;
/* Initialize buffers */
@@ -346,17 +349,37 @@ void start_server(int listen_port,
if (lsock < 0) { error("ERROR creating listener socket"); }
bzero((char *) &serv_addr, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = INADDR_ANY;
serv_addr.sin_port = htons(listen_port);
/* Resolve listen address */
if ((listen_host == NULL) || (listen_host[0] == '\0')) {
serv_addr.sin_addr.s_addr = INADDR_ANY;
} else {
lhost = gethostbyname(listen_host);
if (lhost == NULL) {
fatal("Could not resolve self address");
}
bcopy((char *) lhost->h_addr,
(char *) &serv_addr.sin_addr.s_addr,
lhost->h_length);
for (i=0; i < strlen(lhost->h_addr); i++) {
printf("%d: %d\n", i, lhost->h_addr[i]);
}
}
setsockopt(lsock, SOL_SOCKET, SO_REUSEADDR, (char *)&sopt, sizeof(sopt));
if (bind(lsock, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
error("ERROR on binding listener socket");
fatal("ERROR on binding listener socket");
}
listen(lsock,100);
while (1) {
clilen = sizeof(cli_addr);
printf("waiting for connection on port %d\n", listen_port);
if (listen_host) {
printf("waiting for connection on %s:%d\n", listen_host, listen_port);
} else {
printf("waiting for connection on port %d\n", listen_port);
}
csock = accept(lsock,
(struct sockaddr *) &cli_addr,
&clilen);