transfer.sh/vendor/cloud.google.com/go/httpreplay/internal/proxy/debug.go

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// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build go1.8
package proxy
import (
"log"
"net/http"
)
// Useful things for when we need to figure out what's actually being transmitted.
type debugTransport struct {
prefix string
t *http.Transport
}
func (d debugTransport) RoundTrip(req *http.Request) (*http.Response, error) {
log.Printf("proxy %s: %s %s", d.prefix, req.Method, req.URL)
logHeaders(req.Header)
res, err := d.t.RoundTrip(req)
if err != nil {
log.Printf("proxy %s: error %v", d.prefix, err)
} else {
log.Printf("proxy %s: %s", d.prefix, res.Status)
log.Printf("Uncompressed = %v", res.Uncompressed)
log.Printf("ContentLength = %d", res.ContentLength)
logHeaders(res.Header)
log.Printf("Trailers:")
logHeaders(res.Trailer)
}
return res, err
}
func logHeaders(hs http.Header) {
for k, v := range hs {
log.Printf(" %s: %s", k, v)
}
}