/// <summary>客户端配置</summary>
 /// <param name="config"></param>
 /// <returns></returns>
 public static bool SetClientConfig(htphone_client_config_t config)
 {
     htphone_client_config_t t = new htphone_client_config_t();
     t.audio_port = config.audio_port;
     t.expires = config.expires;
     t.sip_port = config.sip_port;
     t.video_port = config.video_port;
     return htphone_set_client_config(ref t) == 0;
 }
 private static extern int htphone_set_client_config(ref htphone_client_config_t config);