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Replace Forwarded Headers via ASP.NET Core middleware

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This commit is contained in:
nicolas.dorier
2019-03-04 20:48:19 +09:00
parent a9722df7e4
commit bcea6027e9
2 changed files with 5 additions and 54 deletions
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53
BTCPayServer/Hosting/BTCpayMiddleware.cs
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@@ -32,8 +32,6 @@ namespace BTCPayServer.Hosting
public async Task Invoke(HttpContext httpContext)
{
RewriteHostIfNeeded(httpContext);
try
{
var bitpayAuth = GetBitpayAuth(httpContext, out bool isBitpayAuth);
@@ -125,57 +123,6 @@ namespace BTCPayServer.Hosting
return false;
}
private void RewriteHostIfNeeded(HttpContext httpContext)
{
string reverseProxyScheme = null;
if (httpContext.Request.Headers.TryGetValue("X-Forwarded-Proto", out StringValues proto))
{
var scheme = proto.SingleOrDefault();
if (scheme != null)
{
reverseProxyScheme = scheme;
}
}
ushort? reverseProxyPort = null;
if (httpContext.Request.Headers.TryGetValue("X-Forwarded-Port", out StringValues port))
{
var portString = port.SingleOrDefault();
if (portString != null && ushort.TryParse(portString, out ushort pp))
{
reverseProxyPort = pp;
}
}
// NGINX pass X-Forwarded-Proto and X-Forwarded-Port, so let's use that to have better guess of the real domain
ushort? p = null;
if (reverseProxyScheme != null)
{
httpContext.Request.Scheme = reverseProxyScheme;
if (reverseProxyScheme == "http")
p = 80;
if (reverseProxyScheme == "https")
p = 443;
}
if (reverseProxyPort != null)
{
p = reverseProxyPort.Value;
}
if (p.HasValue)
{
bool isDefault = httpContext.Request.Scheme == "http" && p.Value == 80;
isDefault |= httpContext.Request.Scheme == "https" && p.Value == 443;
if (isDefault)
httpContext.Request.Host = new HostString(httpContext.Request.Host.Host);
else
httpContext.Request.Host = new HostString(httpContext.Request.Host.Host, p.Value);
}
}
private static async Task HandleBitpayHttpException(HttpContext httpContext, BitpayHttpException ex)
{
httpContext.Response.StatusCode = ex.StatusCode;