private void button_send_Click(object sender, EventArgs e)
{
try
{
string send_msg = richTextBox_send.Text;
//如果当前写字框没有被占用
while (richTextBox_show_writing)
{
}
;
//等到其他线程解除了写字框的占用
richTextBox_show_writing = true; //占用
RichBox_Show rb_s = new RichBox_Show(ShowMsg_inRichTextBox);
string show_string = DateTime.Now.ToString()
+ "\n我说：\n" + send_msg + "\n\n";
this.Invoke(rb_s, new object[] { show_string, Color.Blue, HorizontalAlignment.Right });
richTextBox_show_writing = false; //恢复不被占用
richTextBox_send.Text = "";
send_msg = DateTime.Now.ToString() + "\n" + my_IDnumber + "说：\n" + send_msg + "\n\n";
foreach (Socket Client in alllinks)
{
if (Client == null)
{
break;
}
AsynSend(Client, send_msg);
}
}
catch (Exception)
{
MessageBox.Show("好友已关闭会话，不能发送信息", "出错啦。。。",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
/// <summary>
/// 异步接受客户端消息
/// </summary>
/// <param name="tcpClient"></param>
public void AsynRecive(Socket[] links)
{
byte[] datarec = new byte[1024];
try
{
foreach (Socket tcpClient in links) //遍历所有连接的套接字
{
if (tcpClient == null)
{
break;
}
tcpClient.BeginReceive(datarec, 0, datarec.Length, SocketFlags.None,
asyncResult =>
{
int length = 0;
try
{
length = tcpClient.EndReceive(asyncResult);
string rcv_msg = Encoding.UTF8.GetString(datarec, 0, length);
if (length == 0)
{
MessageBox.Show("好友退出了聊天", "信息提示",
MessageBoxButtons.OK, MessageBoxIcon.Information);
this.Close();
return;
}
//如果是服务器，则向其他客户端转发该消息
foreach (Socket otherClient in links)
{
if (otherClient == null)
{
break;
}
if (otherClient != tcpClient)
{
AsynSend(otherClient, rcv_msg);
}
}
if (rcv_msg == "<__cmd__transfer__myfile__>")
{
allDone.Reset();
receive_save r_s = new receive_save(ReceiveFileConnect);
this.Invoke(r_s, new object[] { tcpClient });
allDone.WaitOne();
}
else
{
//如果当前写字框没有被占用
while (richTextBox_show_writing)
{
}
;
//等到其他线程解除了写字框的占用
richTextBox_show_writing = true; //占用之
RichBox_Show rb_s = new RichBox_Show(ShowMsg_inRichTextBox);
string show_string = rcv_msg;
this.Invoke(rb_s, new object[] { show_string, Color.Black, HorizontalAlignment.Left });
richTextBox_show_writing = false; //恢复不被占用
}
AsynRecive(links);
}
catch (Exception ex)
{
MessageBox.Show(this, ex.ToString(), "出现异常",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}, null);
}
}
catch (Exception ex)
{
MessageBox.Show(this, ex.ToString(), "出现异常",
MessageBoxButtons.OK, MessageBoxIcon.Error);
this.Close();
return;
}
}