B4X

TCP/IP Socket Connect to Remote Host:Port

See more Socket/SSL/TLS Examples

Demonstrates how to create a TCP/IP socket, connect to a remote host:port, and receive a "Hello World!" message. B4X

Dim success As Boolean = False

'  This example requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

Dim socket As ChilkatSocket
socket.Initialize("socket")

'  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 Boolean = False
Dim maxWaitMillisec As Int = 20000
success = socket.Connect("localhost", 5555, ssl, maxWaitMillisec)
If success <> True Then
    Log(socket.LastErrorText)
    Return
End If


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

'  Pretend, for the sake of the example, that the
'  ficticious server is going to send a "Hello World!" 
'  after accepting the connection.  
'  Note: Technically, the ReceiveString may not receive the
'  complete string, although it's highly probable given the short
'  length of the "Hello World!" message. 
'  See this Chilkat blog post for more information:
'  <a href="http://www.cknotes.com/?p=302">http://www.cknotes.com/?p=302</a>
Dim receivedMsg As String = socket.ReceiveString
If socket.LastMethodSuccess <> True Then
    Log(socket.LastErrorText)
    Return
End If


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

Log(receivedMsg)