///【功能3】P2P下的一对一通信
/// <summary>
/// “添加好友”：添加好友
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void addButton_Click(object sender, EventArgs e)
{
NewFriend newfriendForm = new NewFriend(myName, myIp); //跳转到主界面
newfriendForm.Owner = this;
newfriendForm.Show();
}
private void listening()
{
while (true)
{
Socket receive = ordinListener.AcceptSocket();
byte[] bytes = new byte[2048];
string recvInfo = "";
int num = receive.Receive(bytes);
recvInfo = Encoding.Unicode.GetString(bytes, 0, num);
///监听是否有对话请求
if (recvInfo.StartsWith("START_CHAT"))
{
string mesFrom = recvInfo.Substring(10, 10);
int tag = 0; //标记会话是否已经存在
for (int i = 0; i < chatMaxNum; i++)
{
if (chattList[i] != null && "chat_with" + mesFrom == chattList[i])
{
tag = 1; //表示会话已经存在
break;
}
else
{
tag = 0; //如果会话不存在
}
}
if (tag == 0)
{
DialogResult r = MessageBox.Show("您的好友" + mesFrom + "发起会话，开始对话？", "开始会话", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
if (r == DialogResult.OK)
{
for (int i = 0; i < chatMaxNum; i++)
{
if (chattList[i] == "0")
{
chatListLoc = i;
break;
}
}
chattList[chatListLoc] = "chat_with" + mesFrom;
this.Invoke(new Action(() =>
{
Chat chatForm = new Chat(mesFrom, myName, myIp, myPortrait, recvInfo); //新建会话框
chatForm.Show();
chatForm.Focus();
chatForm.Owner = this;
}));
}
else
{
string[] temp2 = recvInfo.Split('$');
string mesFromIp = temp2[0].Substring(20, temp2[0].Length - 20);
//拒绝对话请求
string userSend = "FALSE_CHAT" + myName; //关闭聊天
IPAddress serverIp = IPAddress.Parse(mesFromIp); //对方ip
IPEndPoint hostEP = new IPEndPoint(serverIp, sendPort); //对方端口地址
Socket client_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
//尝试连接
client_socket.Connect(hostEP);
}
catch (Exception se)
{
MessageBox.Show("连接错误" + se.Message, "提示信息", MessageBoxButtons.RetryCancel, MessageBoxIcon.Information);
return;
}
byte[] bytesSendInfo = new byte[1024];
bytesSendInfo = Encoding.Unicode.GetBytes(userSend);
try
{
client_socket.Send(bytesSendInfo, bytesSendInfo.Length, 0); //发送消息
}
catch (Exception ce)
{
MessageBox.Show("发送错误:" + ce.Message, "提示信息", MessageBoxButtons.RetryCancel, MessageBoxIcon.Information);
return;
}
}
}
else
{
this.Invoke(new Action(() =>
{
for (int i = 0; i <= chatMaxNum; i++)
{
if (this.OwnedForms[i].Name == "Chat")
{
Chat chatTemp = (Chat)this.OwnedForms[i];
if (chatTemp.friendNameLabel.Text == mesFrom)
{
chatTemp.ShowMessage(recvInfo);
break;
}
}
}
}));
}
}
///监听是否有拒绝请求
else if (recvInfo.StartsWith("FALSE_CHAT"))
{
string[] temp2 = recvInfo.Split('$');
string mesFromIp = temp2[0].Substring(20, temp2[0].Length - 20);
for (int i = 0; i < chattList.Length; i++)
{
if (chattList[i] == mesFromIp)
{
chattList[i] = "0";
break;
}
}
MessageBox.Show("会话被拒绝");
}
///监听是否有文件发送请求
else if (recvInfo.StartsWith("SEND_FILES"))
{
string mesFrom = recvInfo.Substring(10, 10);
string[] temp2 = recvInfo.Split('$');
fileName = temp2[1];
string mes_from_ip = temp2[0].Substring(20, temp2[0].Length - 20);
DialogResult r = MessageBox.Show("您的好友" + mesFrom + "向您发出了文件传输请求，请问是否接收？", "文件传输请求", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
if (r == DialogResult.OK)
{
//同意文件发送请求
t2 = new Thread(listening_file);
t2.SetApartmentState(ApartmentState.STA);
t2.IsBackground = true;
t2.Start();
fileFrom = mes_from_ip;
string user_send = "ACCPT_FILE" + myName + ipLabel.Text; //关闭聊天
IPAddress server_ip = IPAddress.Parse(mes_from_ip); //对方ip
IPEndPoint hostEP = new IPEndPoint(server_ip, sendPort); //对方端口地址
Socket client_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
//尝试连接
client_socket.Connect(hostEP);
}
catch (Exception se)
{
MessageBox.Show("连接错误" + se.Message, "提示信息", MessageBoxButtons.RetryCancel, MessageBoxIcon.Information);
return;
}
byte[] bytes_send_info = new byte[1024];
bytes_send_info = Encoding.Unicode.GetBytes(user_send);
try
{
client_socket.Send(bytes_send_info, bytes_send_info.Length, 0); //发送消息
}
catch (Exception ce)
{
MessageBox.Show("发送错误:" + ce.Message, "提示信息", MessageBoxButtons.RetryCancel, MessageBoxIcon.Information);
return;
}
}
else
{
string user_send = "REFUS_FILE" + myName + ipLabel.Text; //关闭聊天
IPAddress server_ip = IPAddress.Parse(mes_from_ip); //对方ip
IPEndPoint hostEP = new IPEndPoint(server_ip, sendPort); //对方端口地址
Socket client_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
//尝试连接
client_socket.Connect(hostEP);
}
catch (Exception se)
{
MessageBox.Show("连接错误" + se.Message, "提示信息", MessageBoxButtons.RetryCancel, MessageBoxIcon.Information);
return;
}
byte[] bytes_send_info = new byte[1024];
bytes_send_info = Encoding.Unicode.GetBytes(user_send);
try
{
client_socket.Send(bytes_send_info, bytes_send_info.Length, 0); //发送消息
}
catch (Exception ce)
{
MessageBox.Show("发送错误:" + ce.Message, "提示信息", MessageBoxButtons.RetryCancel, MessageBoxIcon.Information);
return;
}
}
}
///监听文件发送过程
else if (recvInfo.StartsWith("ACCPT_FILE"))
{
string mes_from = recvInfo.Substring(10, 10);
string[] temp2 = recvInfo.Split('$');
string mes_from_ip = temp2[0].Substring(20, temp2[0].Length - 20);
for (int j = 0; j <= chatMaxNum; j++)
{
if (this.OwnedForms[j].Name == "Chat") //找到对应的窗口
{
Chat chatTemp = (Chat)this.OwnedForms[j];
if (chatTemp.friendNameLabel.Text == mes_from)
{
chatTemp.fileSign();
break;
}
}
}
}
else if (recvInfo.StartsWith("ACCP2_FILE"))
{
string mes_from = recvInfo.Substring(10, 10);
string[] temp2 = recvInfo.Split('$');
string mes_from_ip = temp2[0].Substring(20, temp2[0].Length - 20);
for (int j = 0; j <= chatMaxNum; j++)
{
if (this.OwnedForms[j].Name == "Chat") //找到对应的窗口
{
Chat chatTemp = (Chat)this.OwnedForms[j];
if (chatTemp.friendNameLabel.Text == mes_from)
{
chatTemp.fileSend();
break;
}
}
}
}
else if (recvInfo.StartsWith("REFUS_FILE"))
{
MessageBox.Show("文件发送被对方拒绝！");
}
///监听群聊
else if (recvInfo.StartsWith("START_MHAT"))
{
string mes_from = recvInfo.Substring(10, 10);
string[] temp2 = recvInfo.Split('$');
string mes_from_ip = temp2[0].Substring(20, temp2[0].Length - 20);
int pos = temp2[1].IndexOf(" " + myName);
if (pos != -1)
{
temp2[1] = temp2[1].Remove(pos, myName.Length + 1); //去掉本身，显示群聊对象
}
temp2[1] = temp2[1] + " " + mes_from;
group_oth = temp2[1].Split(' ');
string[] group_oth_real;
int group_len = 0;
for (int m = 0; m < group_oth.Length; m++)
{
if (group_oth[m] != "")
{
group_len++;
}
}
group_oth_real = new string[group_len];
int index = 0;
for (int m = 0; m < group_oth.Length; m++)
{
if (group_oth[m] != "")
{
group_oth_real[index] = group_oth[m];
index++;
}
}
if (tagMultichat == 0)
{
DialogResult r = MessageBox.Show("您的好友" + mes_from + "向您发起了群聊会话，开始对话？", "接受群聊", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
if (r == DialogResult.OK)
{
this.Invoke(new Action(() =>
{
MultiChat multiForm = new MultiChat(myName, myIp, myPortrait, group_oth_real, recvInfo, mes_from, mes_from_ip, "client"); //新建会话框
multiForm.Show();
multiForm.Focus();
multiForm.Owner = this;
}));
tagMultichat = 1;
}
else
{
//发送拒绝信息
/********************************拒绝对方的群聊请求********************************/
string user_send = "FALSE_MHAT" + myName; //关闭聊天
IPAddress server_ip = IPAddress.Parse(mes_from_ip); //对方ip
IPEndPoint hostEP = new IPEndPoint(server_ip, sendPort); //对方端口地址
Socket client_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
//尝试连接
client_socket.Connect(hostEP);
}
catch (Exception se)
{
MessageBox.Show("连接错误" + se.Message, "提示信息", MessageBoxButtons.RetryCancel, MessageBoxIcon.Information);
return;
}
byte[] bytes_send_info = new byte[1024];
bytes_send_info = Encoding.Unicode.GetBytes(user_send);
try
{
client_socket.Send(bytes_send_info, bytes_send_info.Length, 0); //发送消息
}
catch (Exception ce)
{
MessageBox.Show("发送错误:" + ce.Message, "提示信息", MessageBoxButtons.RetryCancel, MessageBoxIcon.Information);
return;
}
tagMultichat = 0; //表示没有群聊窗口
}
}
else //该对话已经存在，直接找到窗口显示
{
this.Invoke(new Action(() =>
{
for (int i = 0; i < this.OwnedForms.Count(); i++)
{
if (this.OwnedForms[i].Name == "multichat")
{
MultiChat multiTemp = (MultiChat)this.OwnedForms[i];
{
if (multiTemp.state == "client") //若是客户机
{
multiTemp.RecvShow(recvInfo, mes_from, group_oth);
break;
}
else if (multiTemp.state == "server") //若是服务器
{
multiTemp.RecvShow(recvInfo, mes_from, group_oth); //在自己的窗口上显示
multiTemp.ownerTrans(recvInfo, mes_from, mes_from_ip); //将收到的消息转发
}
}
}
}
}));
}
}
///监听群聊是否被拒绝
else if (recvInfo.StartsWith("FALSE_MHAT"))
{
string mes_from = recvInfo.Substring(10, 10);
string[] temp2 = recvInfo.Split('$');
string mes_from_ip = temp2[0].Substring(20, temp2[0].Length - 20);
MessageBox.Show("朋友" + mes_from + "退出群聊！");
this.Invoke(new Action(() => //关闭对话
{
for (int j = 0; j < this.OwnedForms.Count(); j++)
{
if (this.OwnedForms[j].Name == "MultiChat")
{
MultiChat multiTemp = (MultiChat)this.OwnedForms[j];
{
if (multiTemp.state == "server") //接收方必为server
{
int nu = multiTemp.friends_list.Controls.Count;
for (int t = 0; t < nu; t++)
{
Friend tem = (Friend)multiTemp.friends_list.Controls[t];
if (tem.friendListName.Text == mes_from)
{
multiTemp.friends_list.Controls.RemoveAt(t);
break;
}
}
}
break;
}
}
}
}));
}
///监听好友添加请求
else if (recvInfo.StartsWith("ADD_FRIEND"))
{
string mesFrom = recvInfo.Substring(10, 10);
string[] temp2 = recvInfo.Split('$');
string mesFromIp = temp2[0].Substring(20, temp2[0].Length - 20);
string friendReply = "";
DialogResult r = MessageBox.Show("好友：" + mesFrom + "想添加您为好友，请问您接受吗？", "提示信息", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
if (r == DialogResult.OK)
{
friendReply = "ACCPT_ADDF" + usernameLabel.Text + ipLabel.Text + "$";
NewFriend nfTemp = new NewFriend(myName, myIp);
nfTemp.addFriend(mesFrom, mesFromIp);
}
else
{
friendReply = "REJEC_ADDF" + usernameLabel.Text + ipLabel.Text + "$";
}
IPAddress server_ip = IPAddress.Parse(mesFromIp);
IPEndPoint hostEP = new IPEndPoint(server_ip, sendPort);
Socket client_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
client_socket.Connect(hostEP);
}
catch (Exception se)
{
MessageBox.Show("连接错误" + se.Message, "提示信息", MessageBoxButtons.RetryCancel, MessageBoxIcon.Information);
return;
}
byte[] bytesSendInfo = new byte[1024];
bytesSendInfo = Encoding.Unicode.GetBytes(friendReply);
try
{
client_socket.Send(bytesSendInfo, bytesSendInfo.Length, 0); //发送消息
}
catch (Exception ce)
{
MessageBox.Show("发送错误:" + ce.Message, "提示信息", MessageBoxButtons.RetryCancel, MessageBoxIcon.Information);
return;
}
}
///监听好友添加请求是否被拒绝
else if (recvInfo.StartsWith("REJEC_ADDF"))
{
string mes_from = recvInfo.Substring(10, 10);
string[] temp2 = recvInfo.Split('$');
string mes_from_ip = temp2[0].Substring(20, temp2[0].Length - 20);
this.Invoke(new Action(() => //关闭对话
{
for (int j = 0; j < this.OwnedForms.Count(); j++)
{
if (this.OwnedForms[j].Name == "NewFriend")
{
NewFriend nfTemp = (NewFriend)this.OwnedForms[j];
{
nfTemp.friendRespon("REJEC_ADDF", mes_from, mes_from_ip);
}
}
}
}));
}
///监听好友添加请求是否被接受
else if (recvInfo.StartsWith("ACCPT_ADDF"))
{
string mes_from = recvInfo.Substring(10, 10);
string[] temp2 = recvInfo.Split('$');
string mes_from_ip = temp2[0].Substring(20, temp2[0].Length - 20);
this.Invoke(new Action(() => //关闭对话
{
for (int j = 0; j < this.OwnedForms.Count(); j++)
{
if (this.OwnedForms[j].Name == "NewFriend")
{
NewFriend nfTemp = (NewFriend)this.OwnedForms[j];
{
nfTemp.friendRespon("ACCPT_ADDF", mes_from, mes_from_ip);
}
}
}
}));
}
}
}