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https://github.com/heiher/hev-socks5-core

A simple, lightweight socks5 library. (IPv4/IPv6/TCP/UDP/Client/Server)
https://github.com/heiher/hev-socks5-core

library socks5 tcp udp

Last synced: about 1 month ago
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A simple, lightweight socks5 library. (IPv4/IPv6/TCP/UDP/Client/Server)

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# HevSocks5Core

HevSocks5Core is a simple, lightweight socks5 library.

**Features**
* IPv4/IPv6. (dual stack)
* Standard `CONNECT` command.
* Standard `UDP ASSOCIATE` command.
* Extended `FWD UDP` command. (UDP in TCP)
* Multiple username/password authentication.

**Dependencies**
* HevTaskSystem - https://github.com/heiher/hev-task-system

## Examples

### Server

```c
#include

#include
#include
#include
#include
#include

#include

static void
server_entry (void *data)
{
HevSocks5Server *server = data;
hev_socks5_server_run (server);
hev_object_unref (HEV_OBJECT (server));
}

static void
listener_entry (void *data)
{
struct addrinfo hints = { 0 };
struct addrinfo *result;
int fd;

hints.ai_family = AF_INET6;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;

hev_task_dns_getaddrinfo (NULL, "1080", &hints, &result);
fd = hev_task_io_socket_socket (AF_INET6, SOCK_STREAM, 0);
bind (fd, result->ai_addr, result->ai_addrlen);
freeaddrinfo (result);
listen (fd, 5);

hev_task_add_fd (hev_task_self (), fd, POLLIN);

for (;;) {
HevSocks5Server *server;
HevTask *task;
int nfd;

nfd = hev_task_io_socket_accept (fd, NULL, NULL, NULL, NULL);

task = hev_task_new (-1);
server = hev_socks5_server_new (nfd);
hev_task_run (task, server_entry, server);
}

close (fd);
}

int
main (int argc, char *argv[])
{
HevTask *task;

hev_task_system_init ();

task = hev_task_new (-1);
hev_task_run (task, listener_entry, NULL);

hev_task_system_run ();

hev_task_system_fini ();

return 0;
}
```

### Client

```c
#include

#include
#include
#include
#include

static void
tcp_client_entry (void *data)
{
HevSocks5ClientTCP *tcp;

tcp = hev_socks5_client_tcp_new ("www.google.com", 443);
hev_socks5_client_connect (HEV_SOCKS5_CLIENT (tcp), "127.0.0.1", 1080);
hev_socks5_client_handshake (HEV_SOCKS5_CLIENT (tcp));

/*
* splice data to/from a socket fd:
* hev_socks5_tcp_splice (HEV_SOCKS5_TCP (tcp), fd);
*/

hev_object_unref (HEV_OBJECT (tcp));
}

static void
udp_client_entry (void *data)
{
HevSocks5ClientUDP *udp;

udp = hev_socks5_client_udp_new (HEV_SOCKS5_TYPE_UDP_IN_TCP);
hev_socks5_client_connect (HEV_SOCKS5_CLIENT (udp), "127.0.0.1", 1080);
hev_socks5_client_handshake (HEV_SOCKS5_CLIENT (udp));

/*
* send udp packet:
* hev_socks5_udp_sendto (HEV_SOCKS5_UDP (udp), data, len, addr);
*
* recv udp packet: (with source address family AF_INET6)
* addr.sa_family = AF_INET6;
* hev_socks5_udp_recvfrom (HEV_SOCKS5_UDP (udp), data, len, addr);
*
* recv udp packet: (with source address family AF_INET for IPv4 only)
* addr.sa_family = AF_INET;
* hev_socks5_udp_recvfrom (HEV_SOCKS5_UDP (udp), data, len, addr);
*/

hev_object_unref (HEV_OBJECT (udp));
}

int
main (int argc, char *argv[])
{
HevTask *task;

hev_task_system_init ();

task = hev_task_new (-1);
hev_task_run (task, tcp_client_entry, NULL);

task = hev_task_new (-1);
hev_task_run (task, udp_client_entry, NULL);

hev_task_system_run ();

hev_task_system_fini ();

return 0;
}
```

## Users

* **HevSocks5Server** - https://github.com/heiher/hev-socks5-server
* **HevSocks5TProxy** - https://github.com/heiher/hev-socks5-tproxy
* **HevSocks5Tunnel** - https://github.com/heiher/hev-socks5-tunnel

## Contributors
* **hev** - https://hev.cc
* **spider84** - https://github.com/spider84

## License
MIT