PowerShell

Duplicate Python websockets

See more WebSocket Examples

Demonstrates how to duplicate the following Python client-side websocket snippet:

async with websockets.connect('ws://192.168.1.35/websocket') as websocket:
await websocket.send("http.controller_login:username=xxx&password=xxxxx")
response = await websocket.recv()

PowerShell

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

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

# In Python, the following line of code does more than just connect:
# 
#      websockets.connect('ws://192.168.1.35/websocket')
# 
# It is connecting to 192.168.1.35 without using TLS.  If the URI starts with "wss://", then TLS should be used.
# But this URI begins with just "ws:/", so no TLS.

# Also, after connecting, a GET request is sent to the /websocket endpoint.
# In summary, the websockets.connect function is establishing the connection and it sends a GET request.

# First establish the connection.
# No TLS, use the default HTTP port 80.
$rest = New-Object Chilkat.Rest
$success = $rest.Connect("192.168.1.35",80,$false,$false)
if ($success -ne $true) {
    $($rest.LastErrorText)
    exit
}

$ws = New-Object Chilkat.WebSocket

# Tell the WebSocket to use this connection.
$success = $ws.UseConnection($rest)
if ($success -ne $true) {
    $($ws.LastErrorText)
    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()

# Now send the GET request to /websockets.
$responseBody = $rest.FullRequestNoBody("GET","/websockets")
if ($rest.LastMethodSuccess -ne $true) {
    $($rest.LastErrorText)
    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
$("Response status code: " + $statusCode)

if ($statusCode -ne 101) {
    $($responseBody)
    $("-- Failed because of unexpected response status code.")
    exit
}

# We have the expected 101 response, so let's now validate the 
# contents of the response.
$success = $ws.ValidateServerHandshake()
if ($success -ne $true) {
    $($ws.LastErrorText)
    exit
}

$("WebSocket connection successful.")

# The application may now begin sending and receiving frames on the WebSocket connection.

# The 1st frame sent by the Python snippet is:
# 
#     websocket.send("http.controller_login:username=xxx&password=xxxxx")
# 

# Send the same using Chilkat, and get the response.
$finalFrame = $true
$success = $ws.SendFrame("http.controller_login:username=xxx&password=xxxxx",$finalFrame)
if ($success -ne $true) {
    $($ws.LastErrorText)
    exit
}

# Read an incoming frame.
$success = $ws.ReadFrame()
if ($success -ne $true) {
    $("Failed to receive a frame")
    $("ReadFrame fail reason = " + $ws.ReadFrameFailReason)
    $($ws.LastErrorText)
    exit
}

# Show the string that was received.
$receivedStr = $ws.GetFrameData()
$("Received: " + $receivedStr)

# Continue with whatever additional communications are desired...
# ....
#