/// <summary>
/// Listen to the message sent by the server监听服务端发来的消息
/// </summary>
void ReceiveMsg()//0 is an ordinary message, 1 is a user list 0是普通消息，1是用户列表
{
while (true)
{
//Define a receive byte array buffer (2M size)
//定义一个接收消息用的字节数组缓冲区（2M大小）
byte[] arrMsgRev = new byte[1024 * 1024 * 2];
//Save the received data to arrMsgRev and return the length of the data actually received
//将接收到的数据存入arrMsgRev,并返回真正接收到数据的长度
int length = -1;
try
{
length = socketClient.Receive(arrMsgRev);
}
catch (SocketException ex)
{
ShowMsg("SocketException:" + ex.Message);
break;
}
catch (Exception ex)
{
ShowMsg("Exception:" + ex.Message);
break;
}
if (arrMsgRev[0] == 0) //Judge the client sent the first element of the data is 0, on behalf of the text 判断客户端发送过来数据的第一位元素是0，代表文字
{
//At this point all the elements of the array (each byte) are converted to a string, and really received only the server sent a few characters
//此时是将数组的所有元素（每个字节）都转成字符串，而真正接收到只有服务端发来的几个字符
//string strMsgReceive = Encoding.UTF8.GetString(arrMsgRev, 1, length - 1);
byte[] strMsgRev = new byte[arrMsgRev.Length - 1];
Buffer.BlockCopy(arrMsgRev, 1, strMsgRev, 0, arrMsgRev.Length - 1);
StrMessage strMsgReceive = (StrMessage)SerObject.DeserializeObject(strMsgRev);
ShowMsg(string.Format("#{0}# {1} speak to me {2}", strMsgReceive.ToTopic, strMsgReceive.ToName, strMsgReceive.ToMessage));
}
else if (arrMsgRev[0] == 1)//1 is the online user list 1是在线用户列表
{
byte[] strMsgRev = new byte[arrMsgRev.Length - 1];
Buffer.BlockCopy(arrMsgRev, 1, strMsgRev, 0, arrMsgRev.Length - 1);
List <string> listname = (List <String>)SerObject.DeserializeObject(strMsgRev);
listMember.Items.Clear(); //Empty the text 清空文本
foreach (string name in listname)
{
listMember.Items.Add(name);
}
}
}
}
/// Server-side monitoring client-side sends data 服务端监听客户端发来的数据
/// </summary>
void ReceiveMsg(object socketClientPara) //0 is normal message, 1 is the user's nickname 0普通消息，1是用户昵称
{
Socket socketClient = socketClientPara as Socket;
while (true)
{
//Define a receive byte array buffer (2M size)
//定义一个接收消息用的字节数组缓冲区（2M大小）
byte[] arrMsgRev = new byte[1024 * 1024 * 2];
//Save the received data to arrMsgRev and return the length of the data actually received
//将接收到的数据存入arrMsgRev,并返回真正接收到数据的长度
int length = -1;
try
{
length = socketClient.Receive(arrMsgRev);
}
catch (SocketException ex)
{
ShowMsg("Exception:" + ex.Message + "RemoteEndPoint: " + socketClient.RemoteEndPoint.ToString());
clientlist.Remove(socketClient.RemoteEndPoint.ToString());
sendNewClientList();
//Removes the communication socket that was disconnected from the communication socket combination
//从通信套接字结合中删除被中断连接的通信套接字
dict.Remove(socketClient.RemoteEndPoint.ToString());
//Removes the disconnected communication thread object from the set of communication threads
//从通信线程集合中删除被中断连接的通信线程对象
dictThread.Remove(socketClient.RemoteEndPoint.ToString());
//Remove the disconnected IP: Port from the display list
//从显示列表中移除被中断连接的IP:Port
listMember.Items.Remove(socketClient.RemoteEndPoint.ToString());
break;
}
catch (Exception ex)
{
ShowMsg("Exception:" + ex.Message);
break;
}
if (arrMsgRev[0] == 0) //Judge the client sent the first element of the data is 0, on behalf of the text 判断客户端发送过来数据的第一位元素是0，代表文字
{
//At this point all the elements of the array (each byte) are converted to a string, and really received only the server sent a few characters
//此时是将数组的所有元素（每个字节）都转成字符串，而真正接收到只有服务端发来的几个字符
//string strMsgReceive = Encoding.UTF8.GetString(arrMsgRev, 1, length - 1);
byte[] strMsgRev = new byte[arrMsgRev.Length - 1];
Buffer.BlockCopy(arrMsgRev, 1, strMsgRev, 0, arrMsgRev.Length - 1);
StrMessage strMsgReceive = (StrMessage)SerObject.DeserializeObject(strMsgRev);
if (strMsgReceive.ToName == "The server end")
{
ShowMsg(string.Format("#{0}# {1} speak to me :{2}", strMsgReceive.ToTopic, clientlist[socketClient.RemoteEndPoint.ToString()], strMsgReceive.ToMessage));
}
else
{
StrMessage strMsg = new StrMessage();
strMsg.ToMessage = strMsgReceive.ToMessage;
strMsg.ToTopic = strMsgReceive.ToTopic;
strMsg.ToName = clientlist[socketClient.RemoteEndPoint.ToString()];
//set the string which to be sent into UTF-8 corresponding byte array
//将要发送的字符串转成UTF-8对应的字节数组
byte[] arrMsg = SerObject.SerializeObject(strMsg);
byte[] arrMsgSend = new byte[arrMsg.Length + 1];
arrMsgSend[0] = 0;//Set the flag, 0 on behalf of the text sent 设置标识位，0代表发送的是文字
Buffer.BlockCopy(arrMsg, 0, arrMsgSend, 1, arrMsg.Length);
//Get the list of selected remote IP Key
//获得列表中选中的远程IP的Key
String strCli = strMsgReceive.ToName;
string strClientKey = clientlist.toK(strCli);
try
{
//Through the key to find the dictionary set corresponding to a client communication socket Send method to send data to each other
//通过key找到字典集合中对应的某个客户端通信的套接字，用Send方法发送数据给对方
Socket s = dict[strClientKey];
s.Send(arrMsgSend);
ShowMsg(string.Format("#{0}# {1} speak to {2} :{3}", strMsgReceive.ToTopic, strMsgReceive.ToName, clientlist[socketClient.RemoteEndPoint.ToString()], strMsgReceive.ToMessage));
}
catch (SocketException ex)
{
ShowMsg("SocketException:" + ex.Message);
}
catch (Exception ex)
{
ShowMsg("Exception:" + ex.Message);
}
}
}
else if (arrMsgRev[0] == 1) //1 for the nickname 1代表昵称
{
String nickname = Encoding.UTF8.GetString(arrMsgRev, 1, length - 1);
clientlist[socketClient.RemoteEndPoint.ToString()] = nickname;
listMember.Items.Clear(); //Empty the text 清空文本
for (int i = 0; i < clientlist.Size(); i++)
{
listMember.Items.Add(clientlist[i]);
}
sendNewClientList();
}
}
}