PowerShell

Binary.com Tick Stream

See more WebSocket Examples

Tick Stream Request -- Initiate a continuous stream of spot price updates for a given symbol. 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.

$ws = New-Object Chilkat.WebSocket

# For brevity, this example does not check for errors when etablishing the WebSocket connection.
# See Establish WebSocket Connection for more complete sample code for making the connection.

$rest = New-Object Chilkat.Rest

# Connect to ws.binaryws.com
$success = $rest.Connect("ws.binaryws.com",443,$true,$false)
$ws.UseConnection($rest)
$ws.AddClientHeaders()

# My app_id is 12332.  You'll wnat to use your own...
$responseBody = $rest.FullRequestNoBody("GET","/websockets/v3?app_id=12332")
$success = $ws.ValidateServerHandshake()
if ($success -ne $true) {
    $($ws.LastErrorText)
    $($responseBody)
    $($rest.ResponseHeader)
    exit
}

# Build and send the following message:

# {
#   "ticks": "R_50",
#   "subscribe": 1
# }

$json = New-Object Chilkat.JsonObject
$json.AppendString("ticks","R_50")
$json.AppendInt("subscribe",1)

# Send a full message in a single frame
$finalFrame = $true
$success = $ws.SendFrame($json.Emit(),$finalFrame)
if ($success -ne $true) {
    $($ws.LastErrorText)
    exit
}

$jsonTickData = New-Object Chilkat.JsonObject
$jsonTickData.EmitCompact = $false

# Begin reading the tick stream response.
# We'll just read the 1st 10 updates and then exit..
$receivedFinalFrame = $false
$numTicksReceived = 0
while ($numTicksReceived -lt 5) {

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

    # The responses we desire are in Text frames, where the opcode = 1.
    if ($ws.FrameOpcodeInt -eq 1) {
        $receivedJson = $ws.GetFrameData()

        $jsonTickData.Load($receivedJson)
        $($jsonTickData.Emit())

        $numTicksReceived = $numTicksReceived + 1
    }

}

# Close the websocket connection.
$success = $ws.SendClose($true,1000,"Closing this websocket.")
if ($success -ne $true) {
    $($ws.LastErrorText)
    exit
}

# Read the Close response.
$success = $ws.ReadFrame()
if ($success -ne $true) {
    $("ReadFrame fail reason = " + $ws.ReadFrameFailReason)
    $($ws.LastErrorText)
    exit
}

$("Success.")

# The output of the above code is shown here:

# {
#   "echo_req": {
#     "subscribe": 1,
#     "ticks": "R_50"
#   },
#   "msg_type": "tick",
#   "tick": {
#     "ask": "373.8725",
#     "bid": "373.8325",
#     "epoch": "1517437456",
#     "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
#     "quote": "373.8525",
#     "symbol": "R_50"
#   }
# }
# 
# {
#   "echo_req": {
#     "subscribe": 1,
#     "ticks": "R_50"
#   },
#   "msg_type": "tick",
#   "tick": {
#     "ask": "373.7952",
#     "bid": "373.7552",
#     "epoch": "1517437458",
#     "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
#     "quote": "373.7752",
#     "symbol": "R_50"
#   }
# }
# 
# {
#   "echo_req": {
#     "subscribe": 1,
#     "ticks": "R_50"
#   },
#   "msg_type": "tick",
#   "tick": {
#     "ask": "373.8638",
#     "bid": "373.8238",
#     "epoch": "1517437460",
#     "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
#     "quote": "373.8438",
#     "symbol": "R_50"
#   }
# }
# 
# {
#   "echo_req": {
#     "subscribe": 1,
#     "ticks": "R_50"
#   },
#   "msg_type": "tick",
#   "tick": {
#     "ask": "373.7636",
#     "bid": "373.7236",
#     "epoch": "1517437462",
#     "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
#     "quote": "373.7436",
#     "symbol": "R_50"
#   }
# }
# 
# {
#   "echo_req": {
#     "subscribe": 1,
#     "ticks": "R_50"
#   },
#   "msg_type": "tick",
#   "tick": {
#     "ask": "373.6870",
#     "bid": "373.6470",
#     "epoch": "1517437464",
#     "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
#     "quote": "373.6670",
#     "symbol": "R_50"
#   }
# }
# 
# Success.