Chilkat2-Python

WebSocket over TLS

See more WebSocket Examples

Establishing a WebSocket connection over TLS is exactly the same as for TCP, except for a few arguments passed to the Connect method. Chilkat2-Python

import sys
import chilkat2

success = False

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

# --------------------------------------------------
# A WebSocket connection begins life as an HTTP GET request containing a few special header fields,
# such as "Upgrade: websocket".   

# Your application will use the Chilkat Rest class to send the initial HTTP GET.  This allows you
# to use the full capability of the Chilkat Rest class to customize the GET for any particular situation.
# For example:
# 
#   - If custom HTTP request header fields must be added.
#   - If authentication is required, such as OAuth2, OAuth1, Basic HTTP Auth, etc.
#   - If HTTPS, SSH Tunneling, Proxies (HTTP or SOCKS), or other advanced connection or TLS features are required.
# 

rest = chilkat2.Rest()
# ------------------------------------------------------------------
# To use TLS, connect to the TLS port (typically 443) and tell the rest.Connect method
# that it's a TLS connection.
# ------------------------------------------------------------------
bUseTls = True
success = rest.Connect("someserver.com",443,bUseTls,False)
if (success != True):
    print(rest.LastErrorText)
    sys.exit()

ws = chilkat2.WebSocket()

# Tell the WebSocket to use this connection.
success = ws.UseConnection(rest)
if (success != True):
    print(ws.LastErrorText)
    sys.exit()

# Add the standard WebSocket open handshake headers that will be needed.
# (This adds the required HTTP request headers to the rest object.)
ws.AddClientHeaders()

# Add any additional headers that might be desired.
# Two common WebSocketSpecific headers are "Sec-WebSocket-Protocol" and "Origin".
rest.AddHeader("Sec-WebSocket-Protocol","x-something")
rest.AddHeader("Origin","http://someserver.com")

# Do the open handshake.
responseBody = rest.FullRequestNoBody("GET","/something")
if (rest.LastMethodSuccess != True):
    print(rest.LastErrorText)
    sys.exit()

# If successful, the HTTP response status code should be 101,
# and the response body will be empty. (If it failed, we'll have a look
# at the response body..)
statusCode = rest.ResponseStatusCode
print("Response status code: " + str(statusCode))

if (statusCode != 101):
    print(responseBody)
    print("-- Failed because of unexpected response status code.")
    sys.exit()

# We have the expected 101 response, so let's now validate the 
# contents of the response, such as the value sent by the server in the
# Sec-WebSocket-Accept header. 
success = ws.ValidateServerHandshake()
if (success != True):
    print(ws.LastErrorText)
    sys.exit()

print("WebSocket connection successful.")

# The application may now begin sending and receiving frames on the WebSocket connection.
# (At this point, we're done with the rest object...)