Connect to a SOCKSv5 server and request a listening socket for incoming remote connections.
Standard C Library (libc.a)
#include <sys/types.h> #include <sys/socket.h> #include <socks5_api.h>
int socks5tcp_bind(Socket, Dst, DstLen, Svr, SvrLen) Int Socket; struct sockaddr *Dst; size_t DstLen; struct sockaddr *Svr; size_t SrvLen;
The socks5tcp_bind subroutine requests a listening socket on the SOCKSv5 server specified in Svr, in preparation for an incoming connection from a remote destination, specified by Dst. Upon success, Svr will be overwritten with the actual address of the newly bound listening socket, and Socket may be used in a subsequent call to socks5tcp_accept.
Socket must be an open socket descriptor of type SOCK_STREAM.
Socket | Specifies the unique name of the socket. |
Dst | Specifies the address of the SOCKSv5 server to use to request the relayed connection; on success, this space will be overwritten with the actual bound address on the server. |
DstLength | Specifies the length of the address structure in Dst. |
Svr | If non-NULL, specifies the address of the SOCKSv5 server to use to request the relayed connection; on success, this space will be overwritten with the actual bound address on the server. |
SvrLength | Specifies the length of the address structure in Svr. |
Upon successful completion, the socks5tcp_bind subroutine returns a value of 0, and modifies Svr to reflect the actual address of the newly bound listener socket.
If the socks5tcp_bind subroutine is unsuccessful, the system handler performs the following functions:
The socks5tcp_bindaccept subroutine is unsuccessful if any of the following errors occurs:
EBADF | The Socket parameter is not valid. |
ENOTSOCK | The Socket parameter refers to a file, not a socket. |
EADDRNOTAVAIL | The specified address is not available from the local machine. |
EAFNOSUPPORT | The addresses in the specified address family cannot be used with this socket. |
EISCONN | The socket is already connected. |
ETIMEDOUT | The establishment of a connection timed out before a connection was made. |
ECONNREFUSED | The attempt to connect was rejected. |
ENETUNREACH | No route to the network or host is present. |
EADDRINUSE | The specified address is already in use. |
EFAULT | The Address parameter is not in a writable part of the user address space. |
EINPROGRESS | The socket is marked as nonblocking. The connection cannot be immediately completed. The application program can select the socket for writing during the connection process. |
EINVAL | One or more of the specified arguments is invalid. |
ENETDOWN | The specified physical network is down. |
ENOSPC | There is no space left on a device or system table. |
ENOTCONN | The socket could not be connected. |
The socks5tcp_connect subroutine is unsuccessful if any of the following errors occurs:
S5_ESRVFAIL | General SOCKSv5 server failure. |
S5_EPERM | SOCKSv5 server ruleset rejection. |
S5_ENETUNREACH | SOCKSv5 server could not reach target network. |
S5_EHOSTUNREACH | SOCKSv5 server could not reach target host. |
S5_ECONNREFUSED | SOCKSv5 server connection request refused by target host. |
S5_ETIMEDOUT | SOCKSv5 server connection failure due to TTL expiry. |
S5_EOPNOTSUPP | Command not supported by SOCKSv5 server. |
S5_EAFNOSUPPORT | Address family not supported by SOCKSv5 server. |
S5_EADDRINUSE | Requested bind address is already in use (at the SOCKSv5 server). |
S5_ENOERV | No server found. |
The following program fragment illustrates the use of the socks5tcp_bind subroutine by a client to request a listening socket from a server.
struct sockaddr_in svr; struct sockaddr_in dst; . . . socks5tcp_bind(s, (struct sockaddr *)&dst, sizeof(dst), (structsockaddr *)&svr, sizeof(svr));
The socks5tcp_bind subroutine is part of Base Operating System (BOS) Runtime.
The socket applications can be compiled with COMPAT_43 defined. This will make the sockaddr structure BSD 4.3 compatible. For more details refer to socket.h.
The socks5tcp_accept subroutine, socks5tcp_connect subroutine, socks5_getserv subroutine, /etc/socks5c.conf file, accept subroutine, bind subroutine, getsockname subroutine, send subroutine, socket subroutine.
Sockets Overview, and Understanding Socket Connections in AIX Version 4.3 Communications Programming Concepts.