} // W_GroupTalk
/// <summary>
/// 窗口载入时
/// </summary>
/// <param name="sender">the sender</param>
/// <param name="e">the e</param>
private void GroupTalk_Load(object sender, EventArgs e)
{
appendString = new DelegateMem.AppendDelegate(DelegateMethod.appendMethod);
// 开始遍历消息列表
pollMsgTask = Task.Factory.StartNew(() => pollMsg(cancellationTokenSource.Token), cancellationTokenSource.Token);
} // GroupTalk_Load
} // recCallBack
/// <summary>
/// 回调函数发:送数据
/// </summary>
/// <param name="ar">the ar</param>
public static void sendCallBack(IAsyncResult ar)
{
// 当前用户实例
User currentUser = User.GetInstance();
SendCallBackParam sendCallBackParam = (SendCallBackParam)ar.AsyncState;
ListBox lstBox_recMsg = sendCallBackParam.lstBox_recMsg;
string strSend = sendCallBackParam.strSend;
DelegateMem.AppendDelegate appendString = sendCallBackParam.appendString;
try
{
//异步通信 结束数据的异步发送
currentUser.socket.EndSend(ar);
strSend = "发：" + strSend;
// 在右侧显示
string showStr = strSend.PadLeft(lstBox_recMsg.Width / 10, ' ');
lstBox_recMsg.Invoke(appendString, lstBox_recMsg, showStr);
} // try
catch (System.Exception ex)
{
SocketHandler.ShutDownConn(currentUser.socket);
lstBox_recMsg.Invoke(appendString, lstBox_recMsg, "服务器断开了TCP连接");
} // catch
} // sendCallBack
} // W_SingleChat
/// <summary>
/// 窗口载入之时
/// </summary>
/// <param name="sender">the sender</param>
/// <param name="e">the e</param>
private void W_SingleChat_Load(object sender, EventArgs e)
{
appendString = new DelegateMem.AppendDelegate(DelegateMethod.appendMethod);
// 从MsgList中轮询数据
pollMsgTask = Task.Factory.StartNew(() => pollMsg(cancellationTokenSource.Token), cancellationTokenSource.Token);
} // W_SingleChat_Load
/// <summary>
/// Initializes RecvCallBackParam
/// </summary>
/// <param name="lstBox_statu">a listbox that show information</param>
/// <param name="frd">a online user</param>
/// <param name="appendString">append string to listbox</param>
/// <param name="IsStart">whether start listening</param>
public RecvCallBackParam(ListBox lstBox_statu, MyFriend frd,
DelegateMem.AppendDelegate appendString, bool IsStart)
{
this.lstBox_statu = lstBox_statu;
this.frd = frd;
this.appendString = appendString;
this.IsStart = IsStart;
} // RecvCallBackParam
} // W_Login
/// <summary>
/// 单击登录按钮
/// </summary>
/// <param name="sender">the sender</param>
/// <param name="e">the e</param>
private void btn_logIn_Click(object sender, EventArgs e)
{
// 定义添加文本的委托变量
DelegateMem.AppendDelegate appendString = new DelegateMem.AppendDelegate(DelegateMethod.appendMethod);
// 获取当前用户的实例
User currentUser = User.GetInstance();
// 定义网络服务的一个实例
IMSLogStateChangeClient logIM = new IMSLogStateChangeClient();
string loginResault = logIM.changeLogState(txt_userName.Text, txt_userPwd.Text, false);
if (loginResault == "1")
{
currentUser.userName = txt_userName.Text;
#region 连接到服务器并接收消息
if (currentUser.socket == null)
{
currentUser.socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
} // if
if (!currentUser.socket.Connected)
{
// 获得一个可用的IPV4地址
IPEndPoint remoteep = IPEndPointHandler.GetIPEndPoint();
AsyncCallback callBack = new AsyncCallback(CallBackFunc.connCallBack);
currentUser.socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
currentUser.socket.BeginConnect(remoteep, callBack, currentUser);
Thread.Sleep(1000);
// Islogin 在 connCallBack中修改
if (currentUser.Islogin == true)
{
MessageBox.Show("登录成功");
this.DialogResult = DialogResult.OK;
} // if
} // if
#endregion
} // if
else if (loginResault == "0")
{
MessageBox.Show("已有账号登录");//在另一个客户端尝试登录的时候执行的到。
} // else if
else
{
MessageBox.Show("用户名或密码错误");
} // else
} // btn_logIn_Click
/// <summary>
/// 开始监听
/// </summary>
/// <param name="ar"></param>
public static void acceptCallBack(IAsyncResult ar)
{
// 初始化需要用的委托
Friends friends = Friends.GetInstance();
DelegateMem.AppendDelegate appendString;
appendString = new DelegateMem.AppendDelegate(DelegateMethod.appendMethod);
try
{
// 初始化关键参数
AcceptCallBackParam acceptCallBackParam = (AcceptCallBackParam)ar.AsyncState;
TcpListener listener = acceptCallBackParam.listener;
bool IsStart = acceptCallBackParam.IsStart;
ListBox lstBox_statu = acceptCallBackParam.lstBox_statu;
try
{
//完成异步接受连接请求的异步调用
//将连接信息添加到列表和下拉列表
Socket clientSocket = listener.EndAcceptSocket(ar);
MyFriend frd = new MyFriend(clientSocket);
// 加入好友
lock (friends.friendList)
{
friends.friendList.Add(frd);
}
string connMsg = clientSocket.RemoteEndPoint.ToString() + "已连接...";
lstBox_statu.Invoke(appendString, connMsg, lstBox_statu);
AsyncCallback callBack;
if (IsStart)
{
callBack = new AsyncCallback(acceptCallBack);
listener.BeginAcceptSocket(callBack, acceptCallBackParam);
} // if
//开始在连接上进行异步的数据接收
frd.clearBuffer();
// 初始化要传入的参数
RecvCallBackParam recvCallBackParam = new RecvCallBackParam(
lstBox_statu,
frd,
appendString,
IsStart
);
callBack = new AsyncCallback(CallBackFunc.recvCallBack);
frd.socket.BeginReceive(frd.recvBuffer, 0, frd.recvBuffer.Length, SocketFlags.None, callBack, recvCallBackParam);
} // try
catch (System.Exception ex)
{
IsStart = false;
acceptCallBackParam.IsStart = false;
} // catch
} // try
catch (System.Exception ex)
{
// 终于封装了这个异常！！ 即调用stop只会关闭监听，但是仍然会执行这个函数，前面会转型失败.....跳转到这
} // catch
} // acceptCallBack
} // 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
/// <summary>
/// Initializes SendCallBackParam
/// </summary>
/// <param name="strSend">message that will be send</param>
/// <param name="lstBox_recMsg">chat window's listbox that show what be sended</param>
/// <param name="appendString">a delegate member to append string</param>
public SendCallBackParam(string strSend, ListBox lstBox_recMsg, DelegateMem.AppendDelegate appendString)
{
this.strSend = strSend;
this.lstBox_recMsg = lstBox_recMsg;
this.appendString = appendString;
} // SendCallBackParam
} // W_Main
/// <summary>
/// 载入窗体
/// </summary>
/// <param name="sender">the sender</param>
/// <param name="e">the e</param>
private void W_Main_Load(object sender, EventArgs e)
{
//实例化委托对象，绑定方法
appendString = new DelegateMem.AppendDelegate(DelegateMethod.appendMethod);
} // W_Main_Load
