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reverseproxy: Only handle websocket protocol (#6740)

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bt90 2024-12-11 19:17:05 +01:00 committed by GitHub
parent bcaa8aaf11
commit 328fb614f0
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1 changed files with 2 additions and 2 deletions
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4
modules/caddyhttp/reverseproxy/reverseproxy.go
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@ -398,13 +398,13 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyht
}
// websocket over http2, assuming backend doesn't support this, the request will be modified to http1.1 upgrade
// TODO: once we can reliably detect backend support this, it can be removed for those backends
if r.ProtoMajor == 2 && r.Method == http.MethodConnect && r.Header.Get(":protocol") != "" {
if r.ProtoMajor == 2 && r.Method == http.MethodConnect && r.Header.Get(":protocol") == "websocket" {
clonedReq.Header.Del(":protocol")
// keep the body for later use. http1.1 upgrade uses http.NoBody
caddyhttp.SetVar(clonedReq.Context(), "h2_websocket_body", clonedReq.Body)
clonedReq.Body = http.NoBody
clonedReq.Method = http.MethodGet
clonedReq.Header.Set("Upgrade", r.Header.Get(":protocol"))
clonedReq.Header.Set("Upgrade", "websocket")
clonedReq.Header.Set("Connection", "Upgrade")
key := make([]byte, 16)
_, randErr := rand.Read(key)