Private/SignalServer.ps1
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using namespace Pode function Start-PodeSignalServer { # work out which endpoints to listen on $endpoints = @() @(Get-PodeEndpoints -Type Ws) | ForEach-Object { # get the ip address $_ip = [string]($_.Address) $_ip = (Get-PodeIPAddressesForHostname -Hostname $_ip -Type All | Select-Object -First 1) $_ip = (Get-PodeIPAddress $_ip) # add endpoint to list $endpoints += @{ Address = $_ip Hostname = $_.HostName IsIPAddress = $_.IsIPAddress Port = $_.Port Certificate = $_.Certificate.Raw AllowClientCertificate = $_.Certificate.AllowClientCertificate Url = $_.Url } } # create the listener $listener = [PodeListener]::new($PodeContext.Tokens.Cancellation.Token, [PodeListenerType]::WebSocket) $listener.ErrorLoggingEnabled = (Test-PodeErrorLoggingEnabled) try { # register endpoints on the listener $endpoints | ForEach-Object { $socket = [PodeSocket]::new($_.Address, $_.Port, $PodeContext.Server.Sockets.Ssl.Protocols, $_.Certificate, $_.AllowClientCertificate) $socket.ReceiveTimeout = $PodeContext.Server.Sockets.ReceiveTimeout if (!$_.IsIPAddress) { $socket.Hostnames.Add($_.HostName) } $listener.Add($socket) } $listener.Start() $PodeContext.Listeners += $listener $PodeContext.Server.WebSockets.Listener = $listener } catch { $_ | Write-PodeErrorLog $_.Exception | Write-PodeErrorLog -CheckInnerException Close-PodeDisposable -Disposable $listener throw $_.Exception } # script to write messages back to the client(s) $signalScript = { param( [Parameter(Mandatory=$true)] [ValidateNotNull()] $Listener ) try { while ($Listener.IsListening -and !$PodeContext.Tokens.Cancellation.IsCancellationRequested) { $message = (Wait-PodeTask -Task $Listener.GetServerSignalAsync($PodeContext.Tokens.Cancellation.Token)) try { # get the sockets for the message $sockets = @() # by clientId if (![string]::IsNullOrWhiteSpace($message.ClientId)) { $sockets = @($Listener.WebSockets[$message.ClientId]) } else { $sockets = @($Listener.WebSockets.Values) # by path if (![string]::IsNullOrWhiteSpace($message.Path)) { $sockets = @(foreach ($socket in $sockets) { if ($socket.Path -ieq $message.Path) { $socket break } }) } } # do nothing if no socket found if (($null -eq $sockets) -or ($sockets.Length -eq 0)) { continue } # send the message to all found sockets foreach ($socket in $sockets) { try { $socket.Context.Response.SendSignal($message) } catch { $Listener.WebSockets.Remove($socket.ClientId) | Out-Null } } } catch [System.OperationCanceledException] {} catch { $_ | Write-PodeErrorLog $_.Exception | Write-PodeErrorLog -CheckInnerException } } } catch [System.OperationCanceledException] {} catch { $_ | Write-PodeErrorLog $_.Exception | Write-PodeErrorLog -CheckInnerException throw $_.Exception } } Add-PodeRunspace -Type Signals -ScriptBlock $signalScript -Parameters @{ 'Listener' = $listener } # script to queue messages from clients to send back to other clients from the server $clientScript = { param( [Parameter(Mandatory=$true)] [ValidateNotNull()] $Listener ) try { while ($Listener.IsListening -and !$PodeContext.Tokens.Cancellation.IsCancellationRequested) { $context = (Wait-PodeTask -Task $Listener.GetClientSignalAsync($PodeContext.Tokens.Cancellation.Token)) try { $payload = ($context.Message | ConvertFrom-Json) $Request = $context.WebSocket.Context.Request $Response = $context.WebSocket.Context.Response $SignalEvent = @{ Response = $Response Request = $Request Lockable = $PodeContext.Lockables.Global Path = [System.Web.HttpUtility]::UrlDecode($Request.Url.AbsolutePath) Data = @{ Path = [System.Web.HttpUtility]::UrlDecode($payload.path) Message = $payload.message ClientId = $payload.clientId } Endpoint = @{ Protocol = $Request.Url.Scheme Address = $Request.Host Name = $null } Route = $null Timestamp = $context.Timestamp Streamed = $true } # endpoint name $SignalEvent.Endpoint.Name = (Find-PodeEndpointName -Protocol $SignalEvent.Endpoint.Protocol -Address $SignalEvent.Endpoint.Address -LocalAddress $SignalEvent.Request.LocalEndPoint) # see if we have a route and invoke it, otherwise auto-send $SignalEvent.Route = Find-PodeSignalRoute -Path $SignalEvent.Path -EndpointName $SignalEvent.Endpoint.Name if ($null -ne $SignalEvent.Route) { $_args = @($SignalEvent.Route.Arguments) if ($null -ne $SignalEvent.Route.UsingVariables) { $_vars = @() foreach ($_var in $SignalEvent.Route.UsingVariables) { $_vars += ,$_var.Value } $_args = $_vars + $_args } Invoke-PodeScriptBlock -ScriptBlock $SignalEvent.Route.Logic -Arguments $_args -Scoped -Splat } else { Send-PodeSignal -Value $SignalEvent.Data.Message -Path $SignalEvent.Data.Path -ClientId $SignalEvent.Data.ClientId } } catch [System.OperationCanceledException] {} catch { $_ | Write-PodeErrorLog $_.Exception | Write-PodeErrorLog -CheckInnerException } finally { Update-PodeServerSignalMetrics -SignalEvent $SignalEvent } } } catch [System.OperationCanceledException] {} catch { $_ | Write-PodeErrorLog $_.Exception | Write-PodeErrorLog -CheckInnerException throw $_.Exception } } Add-PodeRunspace -Type Signals -ScriptBlock $clientScript -Parameters @{ 'Listener' = $listener } # script to keep web server listening until cancelled $waitScript = { param( [Parameter(Mandatory=$true)] [ValidateNotNull()] $Listener ) try { while ($Listener.IsListening -and !$PodeContext.Tokens.Cancellation.IsCancellationRequested) { Start-Sleep -Seconds 1 } } catch [System.OperationCanceledException] {} catch { $_ | Write-PodeErrorLog $_.Exception | Write-PodeErrorLog -CheckInnerException throw $_.Exception } finally { Close-PodeDisposable -Disposable $Listener } } Add-PodeRunspace -Type Signals -ScriptBlock $waitScript -Parameters @{ 'Listener' = $listener } return @($endpoints.Url) } |