?? tunnel.h
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/*tunnel.hCopyright (C) 1999 Lars Brinkhoff. See COPYING for terms and conditions.*//*This is the programming interface to the HTTP tunnel. It consistsof the following functions:Tunnel *tunnel_new_client (const char *host, int host_port, const char *proxy, int proxy_port, size_t content_length); Create a new HTTP tunnel client.Tunnel *tunnel_new_server (int port, size_t content_length); Create a new HTTP tunnel server. If LENGTH is 0, the Content-Length of the HTTP GET response will be determined automatically in some way.int tunnel_connect (Tunnel *tunnel); Open the tunnel. (Client only.)int tunnel_accept (Tunnel *tunnel); Accept a tunnel connection. (Server only.)int tunnel_pollin_fd (Tunnel *tunnel); Return a file descriptor that can be used to poll for input from the tunnel.ssize_t tunnel_read (Tunnel *tunnel, void *data, size_t length);ssize_t tunnel_write (Tunnel *tunnel, void *data, size_t length); Read or write to the tunnel. Same semantics as with read() and write(). Watch out for return values less than LENGTH.int tunnel_padding (Tunnel *tunnel, size_t length); Send LENGTH pad bytes.int tunnel_maybe_pad (Tunnel *tunnel, size_t length); Pad to nearest even multiple of LENGTH.int tunnel_close (Tunnel *tunnel); Close the tunnel.void tunnel_destroy (Tunnel *tunnel);*/#ifndef TUNNEL_H#define TUNNEL_H#include "config.h"#include <sys/types.h>#define DEFAULT_CONNECTION_MAX_TIME 300typedef struct tunnel Tunnel;extern Tunnel *tunnel_new_client (const char *host, int host_port, const char *proxy, int proxy_port, size_t content_length);extern Tunnel *tunnel_new_server (int port, size_t content_length);extern int tunnel_connect (Tunnel *tunnel);extern int tunnel_accept (Tunnel *tunnel);extern int tunnel_pollin_fd (Tunnel *tunnel);extern ssize_t tunnel_read (Tunnel *tunnel, void *data, size_t length);extern ssize_t tunnel_write (Tunnel *tunnel, void *data, size_t length);extern ssize_t tunnel_padding (Tunnel *tunnel, size_t length);extern int tunnel_maybe_pad (Tunnel *tunnel, size_t length);extern int tunnel_setopt (Tunnel *tunnel, const char *opt, void *data);extern int tunnel_getopt (Tunnel *tunnel, const char *opt, void *data);extern int tunnel_close (Tunnel *tunnel);extern void tunnel_destroy (Tunnel *tunnel);#endif /* TUNNEL_H */
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