public async Task Invoke(HttpContext context)
{
var uri = GeRequestUri(context);
var resultBuilder = new ProxyResultBuilder(uri);
var matchedRule = _options.ProxyRules.FirstOrDefault(r => r.Matcher(uri));
if (matchedRule == null)
{
await _next(context);
_options.Reporter.Invoke(resultBuilder.NotProxied(context.Response.StatusCode));
return;
}
if (matchedRule.RequiresAuthentication && !UserIsAuthenticated(context))
{
AuthenticateResult authResult = AuthenticateResult.Fail("Authentication failure");
foreach (var authScheme in matchedRule.AuthenticationSchemes)
{
authResult = await context.AuthenticateAsync(authScheme);
if (authResult.Succeeded)
{
context.User = authResult.Principal;
break;
}
}
if (!authResult.Succeeded)
{
context.Response.StatusCode = StatusCodes.Status401Unauthorized;
_options.Reporter.Invoke(resultBuilder.NotAuthenticated());
return;
}
}
var proxyRequest = new HttpRequestMessage(new HttpMethod(context.Request.Method), uri);
SetProxyRequestBody(proxyRequest, context);
SetProxyRequestHeaders(proxyRequest, context);
matchedRule.Modifier(proxyRequest, context.User);
proxyRequest.Headers.Host = !proxyRequest.RequestUri.IsDefaultPort
? $"{proxyRequest.RequestUri.Host}:{proxyRequest.RequestUri.Port}"
: proxyRequest.RequestUri.Host;
try {
await ProxyTheRequest(context, proxyRequest, matchedRule);
}
catch (HttpRequestException) {
context.Response.StatusCode = StatusCodes.Status503ServiceUnavailable;
}
_options.Reporter.Invoke(resultBuilder.Proxied(proxyRequest.RequestUri, context.Response.StatusCode));
}
public async Task Invoke(HttpContext context)
{
var uri = GeRequestUri(context);
var resultBuilder = new ProxyResultBuilder(uri);
var matchedRule = _options.ProxyRules.FirstOrDefault(r => r.Matcher.Invoke(uri));
if (matchedRule == null)
{
await _next(context);
_options.Reporter.Invoke(resultBuilder.NotProxied(context.Response.StatusCode));
return;
}
if (matchedRule.RequiresAuthentication && !UserIsAuthenticated(context))
{
context.Response.StatusCode = StatusCodes.Status401Unauthorized;
_options.Reporter.Invoke(resultBuilder.NotAuthenticated());
return;
}
var proxyRequest = new HttpRequestMessage(new HttpMethod(context.Request.Method), uri);
SetProxyRequestBody(proxyRequest, context);
SetProxyRequestHeaders(proxyRequest, context);
matchedRule.Modifier.Invoke(proxyRequest, context.User);
proxyRequest.Headers.Host = proxyRequest.RequestUri.Host;
if (proxyRequest.Content != null)
{
await proxyRequest.Content.LoadIntoBufferAsync();
}
await resultBuilder.HttpRequest(proxyRequest);
try {
await ProxyTheRequest(context, proxyRequest, matchedRule, resultBuilder);
}
catch (HttpRequestException) {
context.Response.StatusCode = StatusCodes.Status503ServiceUnavailable;
}
_options.Reporter.Invoke(resultBuilder.Proxied(proxyRequest.RequestUri, context.Response.StatusCode));
}
public async Task Invoke(HttpContext context)
{
var uri = GeRequestUri(context);
var resultBuilder = new ProxyResultBuilder(uri);
var matchedRule = _options.ProxyRules.FirstOrDefault(r => r.Matcher.Invoke(uri));
if (matchedRule == null)
{
await _next(context);
_options.Reporter?.Invoke(resultBuilder.NotProxied(context.Response.StatusCode));
return;
}
if (matchedRule.RequiresAuthentication && !UserIsAuthenticated(context))
{
context.Response.StatusCode = StatusCodes.Status401Unauthorized;
_options.Reporter?.Invoke(resultBuilder.NotAuthenticated());
return;
}
var proxyRequest = new HttpRequestMessage(new HttpMethod(context.Request.Method), uri);
var client = matchedRule.GetClient != null?matchedRule.GetClient(context.Request, context.User) : _httpClient;
SetProxyRequestBody(proxyRequest, context);
SetProxyRequestHeaders(proxyRequest, context);
matchedRule.Modifier.Invoke(proxyRequest, context.User);
proxyRequest.Headers.Host = !proxyRequest.RequestUri.IsDefaultPort
? $"{proxyRequest.RequestUri.Host}:{proxyRequest.RequestUri.Port}"
: proxyRequest.RequestUri.Host;
try
{
await ProxyTheRequest(client, context, proxyRequest, matchedRule, matchedRule.HeadersToRemove);
}
catch (HttpRequestException err)
{
matchedRule.ErrorHandler?.Invoke(err);
context.Response.StatusCode = StatusCodes.Status503ServiceUnavailable;
}
_options.Reporter?.Invoke(resultBuilder.Proxied(proxyRequest.RequestUri, context.Response.StatusCode));
}
