B4X

TCP Socket Connect through HTTP Proxy

See more Socket/SSL/TLS Examples

Demonstrates how to connect through an HTTP proxy server. 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")

'  To connect through an HTTP proxy, set the HttpProxyHostname
'  and HttpProxyPort properties to the hostname (or IP address)
'  and port of the HTTP proxy.  Typical port numbers used by
'  HTTP proxy servers are 3128 and 8080.
socket.HttpProxyHostname = "www.my-http-proxy.com"
socket.HttpProxyPort = 3128

'  Important:  Your HTTP proxy server must allow non-HTTP
'  traffic to pass.  Otherwise this does not work.

'  Connect (via the HTTP proxy) to port 5555 of 192.168.1.108.
'  hostname may be a domain name or IP address.
Dim hostname As String = "192.168.1.108"
Dim ssl As Boolean = False
Dim maxWaitMillisec As Int = 20000
success = socket.Connect(hostname, 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

'  The ficticious server (in this example) is going to send a "Hello World!" 
'  message.  Read it:
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)