TCP/IP Socket Connect to Remote Host:Port

Demonstrates how to create a TCP/IP socket, connect to a remote host:port, and receive a "Hello World!" message.

Download Chilkat Socket ActiveX

Dim socket As New ChilkatSocket

Dim success As Long
success = socket.UnlockComponent("Anything for 30-day trial")
If (success <> 1) Then
    MsgBox "Failed to unlock component"
    Exit Sub
End If

'  Connect to port 5555 of localhost.
'  The string "localhost" is for testing on a single computer.
'  It would typically be replaced with an IP hostname, such
'  as "www.chilkatsoft.com".
Dim ssl As Long
ssl = 0
Dim maxWaitMillisec As Long
maxWaitMillisec = 20000
success = socket.Connect("localhost",5555,ssl,maxWaitMillisec)
If (success <> 1) Then
    MsgBox socket.LastErrorText
    Exit Sub
End If

'  Set maximum timeouts for reading an writing (in millisec)
socket.MaxReadIdleMs = 10000
socket.MaxSendIdleMs = 10000

'  The server (in this example) is going to send a "Hello World!"
'  message.  Read it:
Dim receivedMsg As String
receivedMsg = socket.ReceiveString()
If (receivedMsg = vbNullString ) Then
    MsgBox socket.LastErrorText
    Exit Sub
End If

'  Close the connection with the server
'  Wait a max of 20 seconds (20000 millsec)
socket.Close 20000

MsgBox receivedMsg