private static UdpPacketStateExtend ResolveEntryExtend(BinaryReader rdr, ulong command)
{
UdpPacketStateExtend extend = new UdpPacketStateExtend();
if ((command & UdpPacket.CMD_OPTION_STATE_PUBKEY) != 0)
{
int len = rdr.ReadInt32();
extend.PublicKey = rdr.ReadBytes(len);
}
if ((command & UdpPacket.CMD_OPTION_STATE_NICKNAME) != 0)
{
extend.NickName = rdr.ReadString();
}
if ((command & UdpPacket.CMD_OPTION_STATE_STATUS) != 0)
{
extend.Status = (UserStatus)rdr.ReadInt32();
}
if ((command & UdpPacket.CMD_OPTION_STATE_PROFILE_PHOTO) != 0)
{
int len = rdr.ReadInt32();
if (len != 0)
{
byte[] buf = rdr.ReadBytes(len);
using (MemoryStream ms = new MemoryStream(buf))
{
extend.ProfilePhoto = Image.FromStream(ms);
}
}
}
return(extend);
}
private UpdateState UpdateContacter(UdpPacket packet)
{
UdpPacketStateExtend extend = packet.Extend as UdpPacketStateExtend;
LanUser user = this[packet.FromMAC];
UpdateState updateState = 0;
if ((packet.Command & UdpPacket.CMD_OPTION_STATE_PUBKEY) != 0)
{
user.SecurityKeys.Public = extend.PublicKey;
updateState |= LanIM.UpdateState.PublicKey;
}
if ((packet.Command & UdpPacket.CMD_OPTION_STATE_NICKNAME) != 0)
{
user.NickName = extend.NickName;
updateState |= LanIM.UpdateState.NickName;
}
if ((packet.Command & UdpPacket.CMD_OPTION_STATE_PROFILE_PHOTO) != 0)
{
ProfilePhotoPool.SetPhoto(user.ID, extend.ProfilePhoto);
updateState |= LanIM.UpdateState.Photo;
}
if ((packet.Command & UdpPacket.CMD_OPTION_STATE_STATUS) != 0)
{
user.Status = extend.Status;
updateState |= LanIM.UpdateState.Status;
}
if (user.Port != packet.Port)
{
user.Port = packet.Port;
updateState |= LanIM.UpdateState.Port;
}
if (user.IP != packet.Address)
{
user.IP = packet.Address;
updateState |= LanIM.UpdateState.IP;
}
return(updateState);
}
private static void EncodeEntryExtend(BinaryWriter wtr, UdpPacket packet)
{
UdpPacketStateExtend extend = packet.Extend as UdpPacketStateExtend;
if (extend == null)
{
throw new Exception("[EncodeEntryExtend]未想定附加包");
}
if ((packet.Command & UdpPacket.CMD_OPTION_STATE_PUBKEY) != 0)
{
byte[] keyBuf = extend.PublicKey;
wtr.Write(keyBuf.Length);
wtr.Write(keyBuf);
}
if ((packet.Command & UdpPacket.CMD_OPTION_STATE_NICKNAME) != 0)
{
wtr.Write(extend.NickName);
}
if ((packet.Command & UdpPacket.CMD_OPTION_STATE_STATUS) != 0)
{
wtr.Write((int)extend.Status);
}
if ((packet.Command & UdpPacket.CMD_OPTION_STATE_PROFILE_PHOTO) != 0)
{
if (extend.ProfilePhoto == null)
{
wtr.Write(0);
}
else
{
using (MemoryStream ms = new MemoryStream())
{
extend.ProfilePhoto.Save(ms, ImageFormat.Png);
wtr.Write((int)ms.Length);
byte[] buf = ms.ToArray();
wtr.Write(buf);
}
}
}
}
private void SendUpdateStatePacket(UpdateState state, IPAddress remote, int port, string mac)
{
//发送自己的信息，让发送方也更新
UdpPacket packetRsp = new UdpPacket();
packetRsp.Address = remote;
packetRsp.Port = port;
packetRsp.ToMAC = mac;
packetRsp.FromMAC = this.MAC;
packetRsp.Command = UdpPacket.CMD_STATE;
UdpPacketStateExtend entryExtend = new UdpPacketStateExtend();
if ((state & LanIM.UpdateState.Photo) != 0)
{
packetRsp.Command |= UdpPacket.CMD_OPTION_STATE_PROFILE_PHOTO;
entryExtend.ProfilePhoto = ProfilePhotoPool.GetPhoto(this.ID, false);
}
if ((state & LanIM.UpdateState.NickName) != 0)
{
packetRsp.Command |= UdpPacket.CMD_OPTION_STATE_NICKNAME;
entryExtend.NickName = this.NickName;
}
if ((state & LanIM.UpdateState.PublicKey) != 0)
{
packetRsp.Command |= UdpPacket.CMD_OPTION_STATE_PUBKEY;
entryExtend.PublicKey = _client.SecurityKeys.Public;
}
if ((state & LanIM.UpdateState.Status) != 0)
{
packetRsp.Command |= UdpPacket.CMD_OPTION_STATE_STATUS;
entryExtend.Status = this.Status;
}
packetRsp.Extend = entryExtend;
_client.Send(packetRsp);
}
//发送上线
public void Login()
{
foreach (IPAddress broadcastAddr in this.BroadcastAddress)
{
//先发送一个空操作，以防失败
SendEmptyPacket(broadcastAddr);
Thread.Sleep(100);
UdpPacket packet = new UdpPacket();
packet.Address = broadcastAddr;
packet.Port = this.Port;
packet.ToMAC = string.Empty;
packet.Command = UdpPacket.CMD_ENTRY |
UdpPacket.CMD_OPTION_STATE_NICKNAME |
//UdpPacket.CMD_OPTION_STATE_PROFILE_PHOTO | //TODO 应该更新所有的，但是跨网的时候好像发送的byte太长，不能正常发送暂且去掉头像
UdpPacket.CMD_OPTION_STATE_PUBKEY |
UdpPacket.CMD_OPTION_STATE_STATUS;
packet.FromMAC = this.MAC;
UdpPacketStateExtend extend = new UdpPacketStateExtend();
extend.PublicKey = _client.SecurityKeys.Public;//送公钥出去
extend.NickName = this.NickName;
extend.ProfilePhoto = ProfilePhotoPool.GetPhoto(this.ID, false);
extend.Status = this.Status;
packet.Extend = extend;
_client.Send(packet);
Thread.Sleep(100);
}
//10分钟以后更新头像
WaitTimer.Start(1 * 60 * 10 * 1000,
new TimerCallback((obj) =>
{
UpdateState(LanIM.UpdateState.Photo);
}
), null);
}
