/*****************聊天*********************/
private void chatButton_Click(object sender, EventArgs e)
{
if (friendListBox.SelectedItem == null)
{
MessageBox.Show("请先选择一个好友");
}
else if ((friendListBox.SelectedItem as string).Contains("离线"))
{
MessageBox.Show("请选择一个在线好友");
}
else
{
string friendID = (friendListBox.SelectedItem as string).Substring(0, 10);
try
{
//如果已建立过对话框，显示该对话框
for (int i = 0; i < chatWinList.Count; i++)
{
if ((chatWinList[i] as ChatWin).friendID == friendID) //聊天窗口类
{
(chatWinList[i] as ChatWin).Show();
(chatWinList[i] as ChatWin).Activate();
return;
}
}
//否则建立新的聊天对话框
ChatWin newChatWin = new ChatWin(userID, friendID, listenPort, toServer);
chatWinList.Add(newChatWin);
newChatWin.parentwin = this;
newChatWin.Show();
newChatWin.Activate();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
/********************监听*****************/
private void Listening()
{
while (listenstart)
{
if (!chatListener.Pending())
{
continue; //为避免被AcceptTcpClient阻塞，没有连接请求时continue
}
TcpClient tcpFromFriend = chatListener.AcceptTcpClient();
string friendIP = tcpFromFriend.Client.RemoteEndPoint.ToString().Split(':')[0]; //获取对方IP
NetworkStream stream = tcpFromFriend.GetStream();
byte[] rcvByt = new byte[1024];
int rcvlength = stream.Read(rcvByt, 0, 1024);
string rcvMsg = Encoding.Unicode.GetString(rcvByt, 0, rcvlength);
//rcvMsg = protocol(3位) + friendID(10位) + ...
stream.Close(); //关闭流和tcp
tcpFromFriend.Close();
string protocol = rcvMsg.Substring(0, 3);
string friendID = rcvMsg.Substring(3, 10);
this.Invoke(new Action(() =>
{
/*************收到对方传来的消息,msg=message ***********/
if (protocol == "msg")
{
string chatMsg = rcvMsg.Substring(13);
bool firstChat = true;
for (int i = 0; i < chatWinList.Count; i++) //已有聊天窗口
{
if ((chatWinList[i] as ChatWin).friendID == friendID)
{
(chatWinList[i] as ChatWin).Show();
(chatWinList[i] as ChatWin).Activate();
(chatWinList[i] as ChatWin).AddMsg(chatMsg);
firstChat = false;
break;
}
}
if (firstChat) //新建聊天窗口
{
ChatWin chatwin = new ChatWin(userID, friendID, listenPort, toServer);
chatwin.parentwin = this;
chatwin.Show();
chatwin.AddMsg(chatMsg);
chatWinList.Add(chatwin);
}
}
/******收到对方发送文件请求，fsr=filesendrequest****/
//rcvdMsg = "fsr" + userID + safefilename + "***" + filelength;
else if (protocol == "fsr")
{
int findposition = rcvMsg.IndexOf("***");
string safefilename = rcvMsg.Substring(13, findposition - 13);
string filelength = rcvMsg.Substring(findposition + 3);
//bool firstrcv = true;
/*
* foreach(object o in fileRcvList) //已有文件接收窗口
* {
* if((o as fileRcvingWin).friendID == friendID)
* {
* (o as fileRcvingWin).filenamenopath = safefilename;
* (o as fileRcvingWin).filelength = filelength;
* (o as fileRcvingWin).Show();
* firstrcv = false;
* break;
* }
* }
* if (firstrcv) //新建文件接收窗口*/
{
fileRcvingWin newrcvwin = new fileRcvingWin(userID, friendID, toServer, listenPort, safefilename, filelength);
newrcvwin.parentwin = this;
newrcvwin.Show();
//fileRcvList.Add(newrcvwin);
}
//MessageBox.Show("来自" + friendID + "的传送文件请求");
}
/******对方同意接收文件，fra=filereceiveagreeded ****/
//此时已有发送文件窗口打开，找到它，发送 rcvMsg = "fra" + userID;
else if (protocol == "fra")
{
foreach (object o in fileSendingList)
{
if ((o as FileSendingWin).friendID == friendID)
{
(o as FileSendingWin).Show();
(o as FileSendingWin).Sendthreadstart();
break;
}
}
}
/********对方拒绝接收文件，frd = filereceivedisagreeded ****/
//此时已有发送文件窗口打开,找到它，显示 rcvMsg = "frd" + userID;
else if (protocol == "frd")
{
foreach (object o in fileSendingList)
{
if ((o as FileSendingWin).friendID == friendID)
{
(o as FileSendingWin).Show();
(o as FileSendingWin).Senddenial();
break;
}
}
}
/*******收到对方加好友请求，rff = requestforfriend ****/
else if (protocol == "rff")
{
//检查friendlistbox是否已添加该好友，防止发送多次好友请求
bool isfriend = false;
for (int i = 0; i < friendListBox.Items.Count; i++)
{
if ((friendListBox.Items[i] as string).Contains(friendID))
{
isfriend = true;
try
{
//以下向对方发送：同意加为好友awr
TcpClient tcptoFriend = new TcpClient();
tcptoFriend.Connect(friendIP, listenPort);
NetworkStream streamtoFriend = tcptoFriend.GetStream();
string sendMsg = "awr" + userID;
byte[] sendByt = Encoding.Unicode.GetBytes(sendMsg);
streamtoFriend.Write(sendByt, 0, sendByt.Length);
streamtoFriend.Close();
tcptoFriend.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
break;
}
}
if (!isfriend) //如果不是好友
{
string msbx = friendID + "请求加为好友,是否同意";
if (MessageBox.Show(msbx, "提示", MessageBoxButtons.YesNo) == DialogResult.Yes)
{ //同意加为好友
try
{
//以下向对方发送：同意加为好友awr
TcpClient tcptoFriend = new TcpClient();
tcptoFriend.Connect(friendIP, listenPort);
NetworkStream streamtoFriend = tcptoFriend.GetStream();
string sendMsg = "awr" + userID;
byte[] sendByt = Encoding.Unicode.GetBytes(sendMsg);
streamtoFriend.Write(sendByt, 0, sendByt.Length);
streamtoFriend.Close();
tcptoFriend.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
//将对方加入通讯录，加入friendListBox
this.Invoke(new Action(() =>
{
friendListBox.Items.Add(friendID + " 在线");
friendListBox.SelectedIndex = friendListBox.Items.Count - 1; //选中
}));
StreamWriter localsw = new StreamWriter("commuTable\\" + userID + ".txt", true);
localsw.WriteLine(friendID);
localsw.Close();
}
else //拒绝加为好友
{
try
{
//以下向好友发送：拒绝加为好友dwr
TcpClient tcptoFriend = new TcpClient();
tcptoFriend.Connect(friendIP, listenPort);
NetworkStream streamtoFriend = tcptoFriend.GetStream();
string sendMsg = "dwr" + userID;
byte[] sendByt = Encoding.Unicode.GetBytes(sendMsg);
streamtoFriend.Write(sendByt, 0, sendByt.Length);
streamtoFriend.Close();
tcptoFriend.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
}
/*******收到对方同意加好友，awr = agreewithrequest ****/
//rcvMsg = "awr" + userID;
else if (protocol == "awr")
{
//检查friendlistbox是否已添加该好友
bool isfriend = false;
for (int i = 0; i < friendListBox.Items.Count; i++)
{
if ((friendListBox.Items[i] as string).Contains(friendID))
{
isfriend = true;
break;
}
}
if (!isfriend)
{
//将对方加入通讯录，加入friendListBox
this.Invoke(new Action(() =>
{
MessageBox.Show(friendID + "同意了你的好友请求，可以开始聊天");
friendListBox.Items.Add(friendID + " 在线");
friendListBox.SelectedIndex = friendListBox.Items.Count - 1; //选中
}));
StreamWriter localsw = new StreamWriter("commuTable\\" + userID + ".txt", true); //true在文末追加
localsw.WriteLine(friendID);
localsw.Close();
}
}
/*******收到对方拒绝加好友，dwr = disagreewithrequest ****/
//rcvMsg = "dwr" + userID
else if (protocol == "dwr")
{
this.Invoke(new Action(() =>
{
MessageBox.Show(friendID + "拒绝了你的好友请求");
}));
}
/*******收到对方上线通知，ili= i-login ****/
//rcvMsg = "ili" + userID
else if (protocol == "ili")
{
for (int i = 0; i < friendListBox.Items.Count; i++)
{
if ((friendListBox.Items[i] as string).Contains(friendID))
{
this.Invoke(new Action(() =>
{
MessageBox.Show("好友 " + friendID + "上线");
friendListBox.Items[i] = friendID + " 在线";
}));
break;
}
}
}
/*******收到对方下线通知，ilo= i-logout ****/
//rcvMsg = "ilo" + userID
else if (protocol == "ilo")
{
for (int i = 0; i < friendListBox.Items.Count; i++)
{
if ((friendListBox.Items[i] as string).Contains(friendID))
{
this.Invoke(new Action(() =>
{
MessageBox.Show("好友 " + friendID + "下线");
friendListBox.Items[i] = friendID + " 离线";
}));
break;
}
}
}
}));
}
}
