/// <summary>
/// 回调函数：接受消息
/// </summary>
/// <param name="ar">the ar</param>
public static void recCallBack(IAsyncResult ar)
{
try
{
// 接受消息的缓冲槽
byte[] recvBuffer = (byte[])ar.AsyncState;
// 当前用户的实例
User currentUser = User.GetInstance();
// 接受到的每一条消息
RecvdMsg recvMsg = new RecvdMsg();
// 消息列表实例
MsgList msgList = MsgList.GetInstance();
try
{
int i = currentUser.socket.EndReceive(ar);
string str_data = Encoding.UTF8.GetString(recvBuffer, 0, i);
// 解析数据
C2CAnayMsg c2cAnayMsg = new C2CAnayMsg(str_data);
// 初始化收到信息类
recvMsg.type = c2cAnayMsg.type;
recvMsg.userName = c2cAnayMsg.srcUser;
recvMsg.srcIP = c2cAnayMsg.srcIP;
recvMsg.destName = c2cAnayMsg.destName;
recvMsg.content = c2cAnayMsg.content;
if (recvMsg.type != null)
{
msgList.recvMsgList.Add(recvMsg);
} // if
recvBuffer = new byte[currentUser.socket.SendBufferSize];
//循环接收
AsyncCallback callBack = new AsyncCallback(recCallBack);
//异步调用
currentUser.socket.BeginReceive(recvBuffer, 0, recvBuffer.Length, SocketFlags.None, callBack, recvBuffer);//开始从连接的Socket中接收数据
} // try
catch (System.Exception ex)
{
if (currentUser.socket != null)
{
SocketHandler.ShutDownConn(currentUser.socket);
} // if
} /// catch
} // try
catch (System.Exception ex)
{
// 封装客户端停止连接时的异常
} // catch
} // recCallBack
} // acceptCallBack
/// <summary>
/// 接受消息
/// </summary>
/// <param name="ar"></param>
public static void recvCallBack(IAsyncResult ar)
{
try
{
// 初始化关键参数
RecvCallBackParam recvCallBackParam = (RecvCallBackParam)ar.AsyncState;
ListBox lstBox_statu = recvCallBackParam.lstBox_statu;
MyFriend frd = recvCallBackParam.frd;
DelegateMem.AppendDelegate appendString = recvCallBackParam.appendString;
bool IsStart = recvCallBackParam.IsStart;
Friends friends = Friends.GetInstance();
try
{
int i = frd.socket.EndReceive(ar);
if (i == 0)
{
lock (friends)
{
friends.friendList.Remove(frd);
}
frd.Dispose();
return;
} // if
else
{
string strData = Encoding.UTF8.GetString(frd.recvBuffer, 0, i);
// 解析收到的数据
C2CAnayMsg c2cAnayMsg = new C2CAnayMsg(strData);
#region 登录
if (c2cAnayMsg.type == "login")
{
frd.userName = c2cAnayMsg.srcUser;
} // if-login
#endregion
#region 群聊
if (c2cAnayMsg.type == "group")
{
string finalData = string.Format("收到来自：{0}，发送给：{1} 的消息： {2}", c2cAnayMsg.srcUser, c2cAnayMsg.destName, c2cAnayMsg.content);
lstBox_statu.Invoke(appendString, finalData, lstBox_statu);
foreach (MyFriend destFrd in friends.friendList)
{
if (destFrd.userName != c2cAnayMsg.srcUser)
{
string groupMsg = BuildMsg.buildSendMsg("group", c2cAnayMsg.srcUser, c2cAnayMsg.srcIP, c2cAnayMsg.destName, c2cAnayMsg.content);
sendData(destFrd, groupMsg);
}
}
}
#endregion
#region 点对点聊天
if (c2cAnayMsg.type == "client2client")
{
string finalData = string.Format("收到来自：{0}，发送给：{1} 的消息： {2}", c2cAnayMsg.srcUser, c2cAnayMsg.destName, c2cAnayMsg.content);
lstBox_statu.Invoke(appendString, finalData, lstBox_statu);
// 寻找目的frd
int destUserIndex = 0;
for (destUserIndex = 0; destUserIndex < friends.friendList.Count; destUserIndex++)
{
MyFriend destFrd = (MyFriend)friends.friendList[destUserIndex];
if (destFrd.userName == c2cAnayMsg.destName)
{
break;
}
} // for
if (destUserIndex == friends.friendList.Count)
{
// TODO 通知发送方，对方不在线
int srcUserIndex = 0;
for (srcUserIndex = 0; srcUserIndex < friends.friendList.Count; srcUserIndex++)
{
MyFriend destFrd = (MyFriend)friends.friendList[srcUserIndex];
if (destFrd.userName == c2cAnayMsg.srcUser)
{
break;
}
} // for
// 这种情况，客户端收到后，srcUser是自己的名字，而destName不是自己的名字
string offlineMsg = BuildMsg.buildSendMsg("offline", c2cAnayMsg.srcUser, c2cAnayMsg.srcIP, c2cAnayMsg.destName, "对方未在线");
sendData((MyFriend)friends.friendList[srcUserIndex], offlineMsg);
} // if
else
{
// 转发出去 这种情况，转发给另外一个用户，src是发送者的名字，destName是自己的名字
string onlineMsg = BuildMsg.buildSendMsg("client2client", c2cAnayMsg.srcUser, c2cAnayMsg.srcIP, c2cAnayMsg.destName, c2cAnayMsg.content);
sendData((MyFriend)friends.friendList[destUserIndex], onlineMsg);
} // else
} // if-lient2client
#endregion
#region 退出
if (c2cAnayMsg.type == "logout")
{
// TDO 已处理
string quitMsg = frd.userName + "(" + frd.socket.LocalEndPoint + ")断开了连接";
lstBox_statu.Invoke(appendString, quitMsg, lstBox_statu);
lock (friends)
{
friends.friendList.Remove(frd);
}
frd.Dispose();
} // if
#endregion
#region 添加好友
if (c2cAnayMsg.type == "addfrd")
{
int destUserIndex = 0;
for (destUserIndex = 0; destUserIndex < friends.friendList.Count; destUserIndex++)
{
MyFriend destFrd = (MyFriend)friends.friendList[destUserIndex];
if (destFrd.userName == c2cAnayMsg.destName)
{
break;
} // if
} // for
// 被添加的用户肯定存在
string onlineMsg = BuildMsg.buildSendMsg("addfrd", c2cAnayMsg.srcUser, c2cAnayMsg.srcIP, c2cAnayMsg.destName, c2cAnayMsg.content);
sendData((MyFriend)friends.friendList[destUserIndex], onlineMsg);
}
#endregion
frd.clearBuffer();
AsyncCallback callBack = new AsyncCallback(recvCallBack);
frd.socket.BeginReceive(frd.recvBuffer, 0, frd.recvBuffer.Length, SocketFlags.None, callBack, recvCallBackParam);
} // else
} // try
catch (System.Exception ex)
{
lock (friends)
{
friends.friendList.Remove(frd);
}
frd.Dispose();
} // catch
} // try
catch (System.Exception ex)
{
} // cath
} // recvCallBack