public void ConnectionEstablished(object Sender, SocketAsyncEventArgs e)
{
var connectionMessageInfo = new SocketAsyncEventArgsContainer(e.Buffer,
e.Offset, e.BytesTransferred, e.SocketError, ((Peer)e.UserToken).peerIP,
((Peer)e.UserToken).peerName);
if (this.InvokeRequired)
{
this.Invoke(new ShowSocketEventInfo(ShowConnectionMsg), connectionMessageInfo);
}
else
{
ShowConnectionMsg(connectionMessageInfo);
}
if (e.SocketError == SocketError.Success)
{
AddPeer((Peer)e.UserToken);
((Peer)e.UserToken).ReceiveMessage();
}
else
{
((Peer)e.UserToken).Close();
}
}
public void MessageSent(object Sender, SocketAsyncEventArgs e)
{
var messageSentMessageInfo = new SocketAsyncEventArgsContainer(e.Buffer,
e.Offset, e.BytesTransferred, e.SocketError, (IPEndPoint)e.RemoteEndPoint, ((Peer)e.UserToken).peerName);
if (this.InvokeRequired)
{
this.Invoke(new ShowSocketEventInfo(ShowMessageSentMessage), messageSentMessageInfo);
}
else
{
ShowMessageSentMessage(messageSentMessageInfo);
}
switch (e.SocketError)
{
case (SocketError.Success):
break;
default:
((Peer)e.UserToken).Close();
RemovePeer((Peer)e.UserToken);
break;
}
}
private void ShowMessageReceivedMessage(SocketAsyncEventArgsContainer messageInfo)
{
switch (messageInfo.errorStatus)
{
case (SocketError.Success):
if (messageInfo.buffer.Length == 0)
{
tbMessages.AppendText($"{messageInfo.peerName} disconnected!" + TextBoxNL);
}
else
{
string recvdMessage = Encoding.ASCII.GetString(messageInfo.buffer).TrimEnd('\0');
if (recvdMessage.Length > 0)
{
tbMessages.AppendText($"{messageInfo.peerName} ({messageInfo.peerIP.Address.ToString()}) says:" + TextBoxNL +
Encoding.ASCII.GetString(messageInfo.buffer).TrimEnd('\0') + TextBoxNL);
}
}
break;
case (SocketError.Disconnecting):
tbMessages.AppendText($"{messageInfo.peerName} disconnected!" + TextBoxNL);
break;
default:
tbMessages.AppendText($"Connection with {messageInfo.peerName} has failed with code " +
(long)messageInfo.errorStatus + TextBoxNL);
break;
}
}
public bool MessageReceivedSync(object Sender, SocketAsyncEventArgs e)
{
var messageRecievedMessageInfo = new SocketAsyncEventArgsContainer(e.Buffer,
e.Offset, e.BytesTransferred, e.SocketError, ((Peer)e.UserToken).peerIP,
((Peer)e.UserToken).peerName);
if (this.InvokeRequired)
{
this.Invoke(new ShowSocketEventInfo(ShowMessageReceivedMessage), messageRecievedMessageInfo);
}
else
{
ShowMessageReceivedMessage(messageRecievedMessageInfo);
}
switch (e.SocketError)
{
case (SocketError.Success):
if (e.BytesTransferred == 0)
{
((Peer)e.UserToken).Close();
RemovePeer((Peer)e.UserToken);
return(false);
}
break;
default:
((Peer)e.UserToken).Close();
RemovePeer((Peer)e.UserToken);
return(false);
}
return(true);
}
private void ShowMessageSentMessage(SocketAsyncEventArgsContainer messageInfo)
{
switch (messageInfo.errorStatus)
{
case (SocketError.Success):
break;
case (SocketError.Disconnecting):
tbMessages.AppendText($"{messageInfo.peerName} disconnected!" + TextBoxNL);
break;
default:
tbMessages.AppendText($"Connection with {messageInfo.peerName} has failed with code " +
(long)messageInfo.errorStatus + TextBoxNL);
break;
}
}
public void ShowConnectionMsg(SocketAsyncEventArgsContainer messageInfo)
{
long connectionStatus = (long)messageInfo.errorStatus;
if (connectionStatus == 0)
{
tbMessages.AppendText($"Connection with {messageInfo.peerName} " +
$"({messageInfo.peerIP.Address.ToString()})" +
"is established" + TextBoxNL);;;
btnSend.Enabled = true;
}
else
{
tbMessages.AppendText($"Connection with {messageInfo.peerName} " +
$"({messageInfo.peerIP.Address.ToString()}) "
+ $"has failed with code {connectionStatus}" + TextBoxNL);
}
}
