/// <summary>
/// 音视频通话重新连接，用于底层链接在上层认为异常时尝试重连
/// </summary>
/// <param name="json_extension">可扩展添加kNIMVChatSessionId，用于指定对应的通话</param>
/// <param name="cb">操作结果的回调函数，当通话通话不存在或通话</param>
public static void NIMVChatRelogin(string sessionid, NIMVChatOptHandler cb)
{
NIMVChatInfo vchatinfo = new NIMVChatInfo();
vchatinfo.SessionId = sessionid;
string json_extension = vchatinfo.Serialize();
var ptr = NimUtility.DelegateConverter.ConvertToIntPtr(cb);
VChatNativeMethods.nim_vchat_relogin(json_extension, VChatNormalOptCb, ptr);
}
