public static PullFromJSDataStream CreateJSDataStream(
IJSRuntime runtime,
IJSStreamReference jsStreamReference,
long totalLength,
CancellationToken cancellationToken = default)
{
var jsDataStream = new PullFromJSDataStream(runtime, jsStreamReference, totalLength, cancellationToken);
return(jsDataStream);
}
private PullFromJSDataStream(
IJSRuntime runtime,
IJSStreamReference jsStreamReference,
long totalLength,
CancellationToken cancellationToken)
{
_runtime = runtime;
_jsStreamReference = jsStreamReference;
_totalLength = totalLength;
_streamCancellationToken = cancellationToken;
_offset = 0;
}
public static async ValueTask <RemoteJSDataStream> CreateRemoteJSDataStreamAsync(
RemoteJSRuntime runtime,
IJSStreamReference jsStreamReference,
long totalLength,
long signalRMaximumIncomingBytes,
TimeSpan jsInteropDefaultCallTimeout,
CancellationToken cancellationToken = default)
{
// Enforce minimum 1 kb, maximum 50 kb, SignalR message size.
// We budget 512 bytes overhead for the transfer, thus leaving at least 512 bytes for data
// transfer per chunk with a 1 kb message size.
// Additionally, to maintain interactivity, we put an upper limit of 50 kb on the message size.
var chunkSize = signalRMaximumIncomingBytes > 1024 ?
Math.Min(signalRMaximumIncomingBytes, 50 * 1024) - 512 :
throw new ArgumentException($"SignalR MaximumIncomingBytes must be at least 1 kb.");
var streamId = runtime.RemoteJSDataStreamNextInstanceId++;
var remoteJSDataStream = new RemoteJSDataStream(runtime, streamId, totalLength, jsInteropDefaultCallTimeout, cancellationToken);
await runtime.InvokeVoidAsync("Blazor._internal.sendJSDataStream", jsStreamReference, streamId, chunkSize);
return(remoteJSDataStream);
}
public static async Task <string> JSToDotNetStreamParameterAsync(IJSStreamReference jsStreamReference)
{
using var dataReferenceStream = await jsStreamReference.OpenReadStreamAsync();
return(await ValidateStreamValuesAsync(dataReferenceStream));
}
