--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/th_network.h	Sat Jun 21 02:41:29 2014 +0300
@@ -0,0 +1,155 @@
+/*
+ * Simple TCP network connection handling
+ * Programmed and designed by Matti 'ccr' Hamalainen
+ * (C) Copyright 2013-2014 Tecnic Software productions (TNSP)
+ *
+ * Please read file 'COPYING' for information on license and distribution.
+ */
+#ifndef TH_NETWORK_H
+#define TH_NETWORK_H
+
+#include <stdio.h>
+#include <unistd.h>
+#include "th_types.h"
+#include "th_util.h"
+
+
+#ifdef __WIN32
+#define __OBJC_BOOL // A nasty hack
+#include <windows.h>
+#include <winsock.h>
+typedef uint16_t in_port_t;
+typedef uint32_t in_addr_t;
+#else
+#include <sys/select.h>
+#include <sys/socket.h>
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#include <arpa/inet.h>
+#include <netdb.h>
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Global defines
+ */
+#define TH_CONNBUF_SIZE   (64 * 1024)
+#define TH_DELAY_USEC     (15 * 1000)
+#define TH_DUMP_BYTES	  16
+
+
+enum
+{
+    TH_CONN_UNINIT = 0,
+    TH_CONN_PROXY_NEG,
+    TH_CONN_OPEN,
+    TH_CONN_CLOSED,
+    
+    TH_CONN_ERROR,
+    TH_CONN_DATA_AVAIL,
+    TH_CONN_NO_DATA,
+};
+
+enum
+{
+    TH_PROXY_NONE = 0,
+    TH_PROXY_SOCKS4,
+    TH_PROXY_SOCKS4A,
+    TH_PROXY_SOCKS5,
+
+    TH_PROXY_LAST
+};
+
+enum
+{
+    TH_PROXY_AUTH_NONE,
+    TH_PROXY_AUTH_USER,
+};
+
+enum
+{
+    TH_PROXY_CMD_CONNECT = 1,
+    TH_PROXY_CMD_BIND = 2,
+    TH_PROXY_CMD_ASSOC_UDP = 3,
+};
+
+
+typedef struct _th_conn_t
+{
+    // Proxy settings and data
+    struct
+    {
+        char *host;
+        struct hostent *hst;
+        int type, auth_type;
+        int port;
+        struct in_addr addr;
+        char *userid, *passwd;
+    } proxy;
+
+    // Target host data
+    char *host;
+    struct hostent *hst;
+    int port;
+
+    // Socket data
+    int socket;
+    struct in_addr addr;
+    fd_set sockfds;
+
+    // Error handling and status message functors
+    void (*errfunc)(struct _th_conn_t *conn, int err, const char *msg);
+    void (*msgfunc)(struct _th_conn_t *conn, int loglevel, const char *msg);
+
+    int err;
+    int status;
+
+    // Data buffer
+    char buf[TH_CONNBUF_SIZE + 16];
+    char *ptr, *in_ptr;
+    ssize_t got_bytes, total_bytes;
+
+    void *node;
+} th_conn_t;
+
+
+int         th_network_init();
+void        th_network_close(void);
+
+struct hostent *th_resolve_host(th_conn_t *conn, const char *name);
+th_conn_t * th_conn_new(
+    void (*errfunc)(th_conn_t *conn, int err, const char *msg),
+    void (*msgfunc)(th_conn_t *conn, int loglevel, const char *msg));
+
+void        th_conn_err(th_conn_t *conn, int err, const char *fmt, ...);
+void        th_conn_msg(th_conn_t *conn, int loglevel, const char *fmt, ...);
+
+int         th_conn_set_proxy(th_conn_t *conn, int type, int port, const char *host, int auth_type);
+int         th_conn_set_proxy_auth_user(th_conn_t *conn, const char *userid, const char *passwd);
+int         th_conn_open(th_conn_t *conn, const int port, const char *host);
+int         th_conn_close(th_conn_t *);
+void        th_conn_free(th_conn_t *);
+void        th_conn_reset(th_conn_t *);
+
+int         th_conn_pull(th_conn_t *);
+BOOL        th_conn_send_buf(th_conn_t *, const char *buf, const size_t len);
+BOOL        th_conn_check(th_conn_t *);
+
+
+BOOL        th_conn_buf_check(th_conn_t *conn, size_t n);
+BOOL        th_conn_buf_skip(th_conn_t *conn, size_t n);
+int         th_conn_buf_strncmp(th_conn_t *conn, const char *str, const size_t n);
+int         th_conn_buf_strcmp(th_conn_t *conn, const char *str);
+char *      th_conn_buf_strstr(th_conn_t *conn, const char *str);
+
+void        th_conn_dump_buffer(FILE *f, th_conn_t *conn);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* TH_NETWORK_H */