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reverseproxy: Add Alt-Svc to Hop-by-hop headers list (#3159) 

Adds `Alt-Svc` to the list of headers that get removed when proxying
to a backend.

This fixes the issue of having the contents of the Alt-Svc header
duplicated when proxying to another Caddy server.
pull/3162/head
Paolo Barbolini 2020-03-20 13:54:28 +01:00 committed by GitHub
parent 6a4d638c1e
commit 42a6628935
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modules/caddyhttp/reverseproxy/reverseproxy.go
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@ -725,6 +725,7 @@ type Selector interface {
// obsoleted RFC 2616 (section 13.5.1) and are used for backward // obsoleted RFC 2616 (section 13.5.1) and are used for backward
// compatibility. // compatibility.
var hopHeaders = []string{ var hopHeaders = []string{
"Alt-Svc",
"Connection", "Connection",
"Proxy-Connection", // non-standard but still sent by libcurl and rejected by e.g. google "Proxy-Connection", // non-standard but still sent by libcurl and rejected by e.g. google
"Keep-Alive", "Keep-Alive",