Closed
Description
The net/http server permits setting a Transfer-Encoding: identity header to disable chunked response writes. As of https://golang.org/cl/231418, the net/http client rejects responses with Transfer-Encoding: identity, resulting in cases where a Go client cannot talk to a Go server.
Example case:
func main() {
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Transfer-Encoding", "identity")
w.WriteHeader(200)
w.(http.Flusher).Flush()
fmt.Fprintln(w, "Hello, world.")
})
go func() {
log.Fatal(http.ListenAndServe("127.0.0.1:8080", nil))
}()
time.Sleep(1 * time.Second)
_, err := http.Get("http://127.0.0.1:8080/")
if err != nil {
fmt.Println(err)
}
}
Get "http://127.0.0.1:8080/": net/http: HTTP/1.x transport connection broken: unsupported transfer encoding: "identity"
The server should remove the Transfer-Encoding: identity header from the response (while still disabling chunking).
Related: The server should treat any encoding other than "identity" or "chunked" as an error. https://golang.org/issue/38867