Merge branch 'main' into 18842-arv-mount-disk-config

[arvados.git] / lib / controller / proxy.go

diff --git a/lib/controller/proxy.go b/lib/controller/proxy.go
index d7381860ea422299406e0a38e726f6d09bb38481..47b8cb47112ad5990d2f80dd23c72cf98fb85a70 100644 (file)
--- a/lib/controller/proxy.go
+++ b/lib/controller/proxy.go
@@ -42,6 +42,9 @@ var dropHeaders = map[string]bool{
        "Accept-Encoding":   true,
        "Content-Encoding":  true,
        "Transfer-Encoding": true,
+
+       // Content-Length depends on encoding.
+       "Content-Length": true,
 }
 
 type ResponseFilter func(*http.Response, error) (*http.Response, error)
@@ -60,10 +63,13 @@ func (p *proxy) Do(
                        hdrOut[k] = v
                }
        }
-       xff := reqIn.RemoteAddr
-       if xffIn := reqIn.Header.Get("X-Forwarded-For"); xffIn != "" {
-               xff = xffIn + "," + xff
+       xff := ""
+       for _, xffIn := range reqIn.Header["X-Forwarded-For"] {
+               if xffIn != "" {
+                       xff += xffIn + ","
+               }
        }
+       xff += reqIn.RemoteAddr
        hdrOut.Set("X-Forwarded-For", xff)
        if hdrOut.Get("X-Forwarded-Proto") == "" {
                hdrOut.Set("X-Forwarded-Proto", reqIn.URL.Scheme)