private void SendUpdateStatePacket(UpdateState state, User user, IPAddress brdIp)
{
UdpPacket packet = new UdpPacket();
packet.Address = user.Address;
packet.Port = user.Port;
packet.ToMAC = "";
packet.FromMAC = user.ID;
packet.Command = UdpPacket.CMD_STATE;
UdpPacketUserStateExtend entryExtend = new UdpPacketUserStateExtend();
entryExtend.User = user;
entryExtend.UpdateState = state;
packet.Extend = entryExtend;
UdpPacket packetWrap = new UdpPacket();
packetWrap.Address = brdIp;
packetWrap.Port = this.Port;
packetWrap.ToMAC = "";
packetWrap.FromMAC = this.MAC;
packetWrap.Command = UdpPacket.CMD_RETRANSMIT;
IPacketEncoder encoder = PacketEncoderFactory.CreateEncoder(packet);
EncodeResult result = encoder.Encode();
UdpPacketRetransExtend extend = new UdpPacketRetransExtend(result.Fragments[0]);
packetWrap.Extend = extend;
_client.Send(packetWrap);
}
private void UserUpdateState(UdpPacket packet)
{
UdpPacketUserStateExtend extend = packet.Extend as UdpPacketUserStateExtend;
//更新用户状态
ClientUser user = this[packet.FromMAC];
user.Update(extend.User, extend.UpdateState);
//用户一览信息回给上线者
UdpPacket packetUsers = new UdpPacket();
packetUsers.Address = packet.Address;
packetUsers.Port = packet.Port;
packetUsers.ToMAC = packet.FromMAC;
packetUsers.FromMAC = this.MAC;
packetUsers.Command = UdpPacket.CMD_USER_LIST;
UdpPacketUserListExtend extendUserList = new UdpPacketUserListExtend();
packetUsers.Extend = extendUserList;
foreach (User u in _users)
{
extendUserList.AddUser(u);
}
_client.Send(packetUsers);
//上线信息广播给各位
foreach (IPAddress brdIp in LanServerConfig.Instance.BroadcastAddress)
{
SendUpdateStatePacket(extend.UpdateState, user, brdIp);
Thread.Sleep(50);
}
}
private static void EncodeEntryExtend(BinaryWriter wtr, UdpPacket packet)
{
UdpPacketUserStateExtend extend = packet.Extend as UdpPacketUserStateExtend;
if (extend == null)
{
throw new Exception("[EncodeEntryExtend]未想定附加包");
}
User user = extend.User;
wtr.Write((int)extend.UpdateState);
if ((extend.UpdateState & UpdateState.PublicKey) != 0)
{
byte[] keyBuf = user.SecurityKeys.Public;
wtr.Write(keyBuf.Length);
wtr.Write(keyBuf);
}
if ((extend.UpdateState & UpdateState.NickName) != 0)
{
wtr.Write(user.NickName);
}
if ((extend.UpdateState & UpdateState.Status) != 0)
{
wtr.Write((int)user.Status);
}
if ((extend.UpdateState & UpdateState.Photo) != 0)
{
if (user.ProfilePhoto == null)
{
wtr.Write(0);
}
else
{
using (MemoryStream ms = new MemoryStream())
{
user.ProfilePhoto.Save(ms, ImageFormat.Png);
wtr.Write((int)ms.Length);
byte[] buf = ms.ToArray();
wtr.Write(buf);
}
}
}
if ((extend.UpdateState & UpdateState.IP) != 0)
{
wtr.Write(user.Address.ToString());
}
if ((extend.UpdateState & UpdateState.Port) != 0)
{
wtr.Write(user.Port);
}
}
private static UdpPacketUserStateExtend ResolveEntryExtend(BinaryReader rdr, ulong command)
{
UdpPacketUserStateExtend extend = new UdpPacketUserStateExtend();
extend.UpdateState = (UpdateState)rdr.ReadInt32();
User user = new User();
extend.User = user;
if ((extend.UpdateState & UpdateState.PublicKey) != 0)
{
int len = rdr.ReadInt32();
user.SecurityKeys.Public = rdr.ReadBytes(len);
}
if ((extend.UpdateState & UpdateState.NickName) != 0)
{
user.NickName = rdr.ReadString();
}
if ((extend.UpdateState & UpdateState.Status) != 0)
{
user.Status = (UserStatus)rdr.ReadInt32();
}
if ((extend.UpdateState & UpdateState.Photo) != 0)
{
int len = rdr.ReadInt32();
if (len != 0)
{
byte[] buf = rdr.ReadBytes(len);
using (MemoryStream ms = new MemoryStream(buf))
{
user.ProfilePhoto = Image.FromStream(ms);
}
}
}
if ((extend.UpdateState & UpdateState.IP) != 0)
{
user.Address = IPAddress.Parse(rdr.ReadString());
}
if ((extend.UpdateState & UpdateState.Port) != 0)
{
user.Port = rdr.ReadInt32();
}
return(extend);
}
