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How Do I Use "Why Can't I Connect?"

How does this work, what is this trace telling me?

Menu Bar
The main menu bar

File

The File menu contains:
Quit
Quit the application.

Edit

The Edit menu contains:
Select All
Select all the items in the trace list.
Copy
Copy all the selected items to the clipboard.
Clear Visible Trace
Remove all the items in the trace list.
Find
Find text in the trace list.
Preferences
Set the Application Preferences.

Common

The Common menu contains:
Microsoft SQL Server
Test a connection to a Microsoft SQL Server.
MySQL Server
Test a connection to a MySQL Server.
FTP Server
Test a connection to an FTP Server.
SFTP Server
Test a connection to an SFTP Server.
IMAP Server
Test a connection to an IMAP Server.
POP3 Server
Test a connection to a POP3 Server.
SMTP Server
Test a connection to an SMTP Server.
IRC Server
Test a connection to an IRC Server.
LDAP Server
Test a connection to an LDAP Server.
Usenet Server
Test a connection to a Usenet Server.

Generic

The Generic menu contains:
Client
Connect a Generic Client.
Server
Create a Generic Server.
Send
Send a message from a generic client or server.
Shutdown
Shutdown a generic client or server.
Close
Close a generic client or server. It is possible to force a shutdown to precede the close by setting the parameter in the advanced tab of the Application Preferences. A close on a server will close all connected sockets and then close the listening socket.

Advanced

The Advanced menu contains:
Bind
Bind the local IP Address to a chosen or system assigned port.
Connect
Connect the bound socket to a server on a given port.
Listen
Listen for connections on the bound IP address and port.
Send
Send a message.
Shutdown
Shutdown the connection.
Close
Close a connected or listening socket. It is possible to force a shutdown to precede the close by setting the parameter in the advanced tab of the Application Preferences. A close on a listening socket will close all connected sockets and then close the listening socket.

Bridging
What is bridging and how do I use it?

Bridge

The Bridge menu contains:
Open Server
Open the Bridge Server.
Connect Client
Connect the Bridge Client.
Send To Client
Send from the Bridge Server to the connected client.
Send To Server
Send from the Bridge Client to the connected server.
Close Bridge
Close all the Bridge connections.

Tools

The tools menu contains:
Multiple Servers
See below.
Ports In Use
Test the computer for connected, listening, reserved, and all ports that can not bind.
Resolve Name / IP Address
Resolve a name to an IP address or an IP address to a name.

Tools / Multiple Servers

The Multiple Servers menu contains:
Open Servers
Open servers across a range of ports. 1000 maximum in Unix / Linux operating systems. 10,000 maximum in Windows operating systems.
Close Servers
Close the range of servers.

Tracing
All the possible trace messages

Trace

The trace menu contains:
Viewable Trace
See below.
Log File
See below.
Show Trace Message Boxes
If checked, display a message box for trace errors and warnings.

Trace / Viewable Trace

The Viewable Trace menu contains:
All
View all tracing.
Headers And Errors Only
View headers and errors, do not view the contents of sent and received messages.
Errors Only
View errors only.
None
Trace nothing to the view list.

Trace / Log File

The Log File Trace menu contains:
All
Write all tracing to the log file. This option is only available if a log file is open.
Headers And Errors Only
Write headers and errors to the log file, do not write the contents of sent and received messages. This option is only available if a log file is open.
Errors Only
Write errors only to the log file. This option is only available if a log file is open.
None
Write nothing to the log file.
Create / Change The Log File
Open or change the log file.
Close The Log File
Close the log file.

Help

The Help menu contains:
Help
Launch help in your preferred browser.
Knowledge Base
Launch the Knowledge Base Wiki in your preferred browser.
About
Show the about dialog to get version and license information.

Tool Bar

The Tool Bar contains:
Copy
Copy all the selected items to the clipboard.
Microsoft SQL Server
Test a connection to a Microsoft SQL Server.
MySQL Server
Test a connection to a MySQL Server.
FTP Server
Test a connection to an FTP Server.
SFTP Server
Test a connection to an SFTP Server.
IMAP Server
Test a connection to an IMAP Server.
POP3 Server
Test a connection to a POP3 Server.
SMTP Server
Test a connection to an SMTP Server.
IRC Server
Test a connection to an IRC Server.
LDAP Server
Test a connection to an LDAP Server.
Usenet Server
Test a connection to a Usenet Server.
Client
Connect a Generic Client.
Server
Create a Generic Server.
Send
Send a message from a generic client or server.
Shutdown
Shutdown a generic client or server.
Close
Close a generic client or server. It is possible to force a shutdown to precede the close by setting the parameter in the advanced tab of the Application Preferences. A close on a server will close all connected sockets and then close the listening socket.