public AngularCliMiddleware(
IApplicationBuilder appBuilder,
string sourcePath,
string npmScriptName)
{
if (string.IsNullOrEmpty(sourcePath))
{
throw new ArgumentException("Cannot be null or empty", nameof(sourcePath));
}
if (string.IsNullOrEmpty(npmScriptName))
{
throw new ArgumentException("Cannot be null or empty", nameof(npmScriptName));
}
_sourcePath = sourcePath;
_logger = GetOrCreateLogger(appBuilder);
// Start Angular CLI and attach to middleware pipeline
var angularCliServerInfoTask = StartAngularCliServerAsync(npmScriptName);
// Everything we proxy is hardcoded to target http://localhost because:
// - the requests are always from the local machine (we're not accepting remote
// requests that go directly to the Angular CLI middleware server)
// - given that, there's no reason to use https, and we couldn't even if we
// wanted to, because in general the Angular CLI server has no certificate
var proxyOptionsTask = angularCliServerInfoTask.ContinueWith(
task => new ConditionalProxyMiddlewareTarget(
"http", "localhost", task.Result.Port.ToString()));
var applicationStoppingToken = GetStoppingToken(appBuilder);
// Proxy all requests into the Angular CLI server
appBuilder.Use(async(context, next) =>
{
try
{
var didProxyRequest = await ConditionalProxy.PerformProxyRequest(
context, _neverTimeOutHttpClient, proxyOptionsTask, applicationStoppingToken);
// Since we are proxying everything, this is the end of the middleware pipeline.
// We won't call next().
if (!didProxyRequest)
{
context.Response.StatusCode = 404;
}
}
catch (AggregateException)
{
ThrowIfTaskCancelled(angularCliServerInfoTask);
throw;
}
catch (TaskCanceledException)
{
ThrowIfTaskCancelled(angularCliServerInfoTask);
throw;
}
});
}
public AngularCliMiddleware(
IApplicationBuilder appBuilder,
string sourcePath,
SpaDefaultPageMiddleware defaultPageMiddleware)
{
if (string.IsNullOrEmpty(sourcePath))
{
throw new ArgumentException("Cannot be null or empty", nameof(sourcePath));
}
// Prepare to make calls into Node
_nodeServices = CreateNodeServicesInstance(appBuilder, sourcePath);
_middlewareScriptPath = GetAngularCliMiddlewareScriptPath(appBuilder);
// Start Angular CLI and attach to middleware pipeline
var angularCliServerInfoTask = StartAngularCliServerAsync();
// Everything we proxy is hardcoded to target http://localhost because:
// - the requests are always from the local machine (we're not accepting remote
// requests that go directly to the Angular CLI middleware server)
// - given that, there's no reason to use https, and we couldn't even if we
// wanted to, because in general the Angular CLI server has no certificate
var proxyOptionsTask = angularCliServerInfoTask.ContinueWith(
task => new ConditionalProxyMiddlewareTarget(
"http", "localhost", task.Result.Port.ToString()));
var applicationStoppingToken = GetStoppingToken(appBuilder);
// Proxy all requests into the Angular CLI server
appBuilder.Use(async(context, next) =>
{
var didProxyRequest = await ConditionalProxy.PerformProxyRequest(
context, _neverTimeOutHttpClient, proxyOptionsTask, applicationStoppingToken);
// Since we are proxying everything, this is the end of the middleware pipeline.
// We won't call next().
if (!didProxyRequest)
{
context.Response.StatusCode = 404;
}
});
// Advertise the availability of this feature to other SPA middleware
appBuilder.Properties.Add(AngularCliMiddlewareKey, this);
}