我有一个问题，我的同事都不愿意帮助我所以我问他是否可以帮助我 -
我有一个关于c＃表单的项目来创建一个客户端（讲师给了我们服务器的python代码 - 只是将数据从播放器传递给播放器），它将与另一个客户端（播放器）进行一场卡片游戏。 / p>
玩家点击一张卡片，然后随机选择一张卡片并以特定协议将其发送到服务器。 来自第一个点击该卡的玩家的第一条消息被发送并收到。
第二位玩家点击一张牌后显示问题 - 他将数据发送到服务器，但第二个播放器接收零字节数组 - 0000。
我一直在寻找答案，但没有找到，我真的很绝望。有人可以帮帮我吗。
我写的客户代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Net;
using System.Resources;
using System.Drawing;
using System.IO;
using System.Reflection;
using System.Threading;
namespace HW6_GuyYoffe
{
public partial class Form1 : Form
{
//connection
bool connected, connectionSucceed = false;
TcpClient client;
NetworkStream clientStream;
byte[] buffer = new byte[MSG_SIZE];
IPEndPoint serverEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), PORT_NUMBER);
//game
public int ansFromUser = 0;
string oppCard, userCard;
int userScore = 0, oppScore = 0;
bool cardChosen;
readonly object key = new object();
public Form1()
{
//creates the form
}
//generate card images on the screen
private void GenerateCards(int numOfCards, int startX, int startY)
{
//creates the cards on the screen
}
// called when user clicks a card
private void ClickOnCard(System.Windows.Forms.PictureBox currentPic)
{
//code...
buffer = new ASCIIEncoding().GetBytes("1" + userCard); //usercard - the random card of the current user
clientStream.Write(buffer, 0, buffer.Length);//send to server the chosen card
clientStream.Flush();
Array.Clear(buffer, 0, buffer.Length);
lock (key)
{
cardChosen = true;
Monitor.Pulse(key);
}
}
//called when form is created
public void PlayGame(object sender, EventArgs e)
{
client = new TcpClient();
ansFromUser = OK;
StartThread();
}
//main function
private void TalkToServer(IPEndPoint serverEndPoint)
{
if (ansFromUser != CLOSE_PROGRAM)
{
if (!connected)
ConnectToServer(serverEndPoint); //connect to server - pretty obvious
if (ansFromUser == CLOSE_PROGRAM)
{
BeginInvoke((MethodInvoker)delegate { this.Dispose(); });
return;
}
do
{
int bytesRead = 0;
try
{
Array.Clear(buffer, 0, buffer.Length);
bytesRead = clientStream.Read(buffer, 0, 4); //waits for 4 bytes from server
//// HERE is the problem - in the second time a clients sends his pick the buffer is 0000 - [0,0,0,0]
}
catch (Exception err3)
{
///error
}
if (bytesRead > 0)
{
string input = new ASCIIEncoding().GetString(buffer); //converts byte array to string
if (!connected)
{
if (input == "0000") //start game message
{
//starts game
}
else
{
//error
}
}
else
{
if (input == "2000") //end game message
{
ansFromUser = CLOSE_PROGRAM;
this.Dispose();
}
else if (input[0] == '1')//recieving the opponent's card
{
oppCard = input.Substring(1); //without the message type
int result = OpponentCard();
userScore += result;
oppScore -= result;
}
else
{
//error
}
}
else
{
///error
break;
}
}
Array.Clear(buffer, 0, buffer.Length);
} while (ansFromUser == OK); //while answer isn't end
}
}
//uses another form. Shows the error that have occurred and asks the user if he wants to try again. If so - tries again
private void ErrorMsgBox(string errorDetails)
{
ErrorBox errMsgBox = new ErrorBox(this, errorDetails);
errMsgBox.ShowDialog();
}
private void ConnectToServer(IPEndPoint serverEndPoint)
{
// connect to server
}
private int OpponentCard()
{
const int WIN = 1;
const int TIE = 0;
const int LOOSE = -1;
int result;
lock (key)
{
while (!cardChosen) //wait until opponent and user chose cards
Monitor.Wait(key);
Monitor.Pulse(key); //card is chosen
cardChosen = false; //reset
}
int oppCardNum = int.Parse(oppCard.Substring(0, 2));
int userCardNum = int.Parse(userCard.Substring(0, 2));
//...
result = oppCardNum < userCardNum ? WIN : (oppCardNum == userCardNum ? TIE : LOOSE); //returns the result
return result;
}
private void StartThread()
{
if (ansFromUser != CLOSE_PROGRAM)
{
Thread serverStart = new Thread(() => TalkToServer(serverEndPoint)); //passing the thread the parameters
serverStart.Start();
}
}
}
}
如果有人想看 - python服务器代码 -
import socket
import select
import Queue
PORT = 8820
HOST = '127.0.0.1'
server = socket.socket()
server.setblocking(0)
server.bind((HOST,PORT))
client = []
while True:
print "new game loop"
clients_connected = 0
server.listen(2)
#Sockets from which we expect to read or write to
inputs = [server]
#waiting for both the connextion to be established
while clients_connected < 2:
readable, writeable, exceptional = select.select(inputs,inputs,inputs)
#handle inputs
for s in readable:
if s is server:
#A readable server socket is ready to accept a connection
conn, addr = s.accept()
print "one connection has been established"
conn.setblocking(0)
inputs.append(conn)
clients_connected = clients_connected + 1
else:
data = s.recv(4)
if not data:
#Interpert empty result as closed connection
print "closing"
#stop listening for input and output
inputs.remove(s)
s.close()
clients_connected = clients_connected - 1
print "both connections has been established"
inputs.remove(server)
initiated = 0
#making sure both of the clients got initializtion message "0000"
while initiated < 2:
readable, writeable, exceptional = select.select(inputs,inputs,inputs)
for s in writeable:
s.send("0000")
initiated = initiated + 1
print "game started"
#Main loop - forwarding messages between the clients
while inputs:
readable, writeable, exceptional = select.select(inputs,inputs,inputs)
#handle inputs
for s in readable:
if s is server:
print "ERROR! can't initiate another connection after the game has been started!"
#Recieve data from the client
data = s.recv(4)
if data:
#A readable client socket has data
print "recieved",data,"from",s.getpeername()
if data != "0000":
#making sure the data isn't initialization message, in case it is the sever will ignore it
#broadcast the recived message:
for o in inputs:
if o is not s:
o.send(data)
else:
#Interpert empty result as closed connection
print "closing"
#stop listening for input and output
inputs.remove(s)
s.close()
for s in exceptional:
print "handling exceptions for",s.getpeername()
inputs.remove(s)
s.close()