private void btn_SendeMessage_Click(object sender, EventArgs e)
{
if (lst_OnlineUser.SelectedIndex != -1)
{
string wholename = null;
string publickeyfromuser = null;
for (int i = 0; i < userInfo.Length; i++)
{
//MessageBox.Show(""+(userInfo[i,0]));
if (lst_OnlineUser.SelectedItem.Equals(userInfo[i, 0]))
{
wholename = userInfo[i, 1];
publickeyfromuser = userInfo[i, 1].Substring(0, 245);
break;
}
}
//string publickeyfromuser = lst_OnlineUser.SelectedItem + "";
//publickeyfromuser = publickeyfromuser.Substring(0, 245);
string encrypteddata;
try
{
UnicodeEncoding ByteConverter = new UnicodeEncoding();
byte[] encrypteData;
byte[] plainttext;
plainttext = ByteConverter.GetBytes(rtf_SendMessage.Text);
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
RSA.FromXmlString(publickeyfromuser);
encrypteData = RSAEnCrypto(plainttext, RSA.ExportParameters(false), false);
encrypteddata = Convert.ToBase64String(encrypteData);
}
catch (Exception f)
{
Console.WriteLine(f);
encrypteddata = null;
}
/*
* abc = rtf_SendMessage.Text;
* string aaa = SRSA.Encrypt(abc);
*/
string bbb = SRSA.Decrypt(encrypteddata);
AsyncSendMessage("Talk," + wholename + "," + encrypteddata + "\r\n");
AddTalkMessage(txt_UserName.Text + " to " + lst_OnlineUser.SelectedItem + ":\r\n");
AddTalkMessage(rtf_SendMessage.Text + "\n");
if (rtf_SendMessage.Text.Equals("Bye"))
{
Application.Exit();
}
rtf_SendMessage.Clear();
//AddTalkMessage(splitString[1].Substring(245) + " to " + txt_UserName.Text + ":\r\n");
//string finalmessage = SRSA.Decrypt(splitString[2]);
//AddTalkMessage(finalmessage + "\n");
}
else
{
MessageBox.Show("请先在[当前在线]中选择一个对话者");
}
}
/// <summary>
/// 处理接收的服务器收据
/// </summary>
private void ReceiveData()
{
string receiveString = null;
while (!isExit)
{
ReceiveMessageDelegate d = new ReceiveMessageDelegate(receiveMessage);
IAsyncResult result = d.BeginInvoke(out receiveString, null, null);
//使用轮询方式来盘点异步操作是否完成
while (!result.IsCompleted)
{
if (isExit)
{
break;
}
Thread.Sleep(250);
}
//获取Begin方法的返回值所有输入/输出参数
d.EndInvoke(out receiveString, result);
if (receiveString == null)
{
if (!isExit)
{
MessageBox.Show("与服务器失去联系");
}
break;
}
string[] splitString = receiveString.Split(',');
string command = splitString[0];
switch (command)
{
case "Login": //格式： login,用户名
for (int i = 0; i < userInfo.Length; i++)
{
if (userInfo[i, 0] != null)
{
continue;
}
else
{
userInfo[i, 0] = splitString[1].Substring(245);
userInfo[i, 1] = splitString[1];
AddOnline(userInfo[i, 0]);
//MessageBox.Show("dan yonghuming: "+userInfo[i, 0] + "\n wanzhengmingzi: " + userInfo[i, 1]);
break;
//rtf_SendMessage.Text = userInfo[i, 0] + "\n" + userInfo[i, 1];
}
}
//AddOnline(splitString[1]);
break;
case "Logout": //格式： logout,用户名
RemoveUserName(splitString[1].Substring(245));
break;
case "Talk": //格式： talk,用户名,对话信息
AddTalkMessage(splitString[1].Substring(245) + " to " + txt_UserName.Text + ":\r\n");
string finalmessage = SRSA.Decrypt(splitString[2]);
AddTalkMessage(finalmessage + "\n");
//AddTalkMessage(receiveString.Substring(splitString[0].Length + splitString[1].Length + 2));
break;
}
}
Application.Exit();
}