func convertPayload(in interface{}, out interface{}) error {
var buf []byte
if err := codec.NewEncoderBytes(&buf, payloadHandler).Encode(in); err != nil {
return err
}
if err := codec.NewDecoderBytes(buf, payloadHandler).Decode(out); err != nil {
return err
}
return nil
}
// UnpackProxyRequest unpacks a HTTPRequest from a serialized cocaine form
func UnpackProxyRequest(raw []byte) (*http.Request, error) {
var v struct {
Method string
URI string
Version string
Headers Headers
Body []byte
}
if err := codec.NewDecoderBytes(raw, hHTTPReq).Decode(&v); err != nil {
return nil, err
}
req, err := http.NewRequest(v.Method, v.URI, bytes.NewBuffer(v.Body))
if err != nil {
return nil, err
}
req.Header = HeadersCocaineToHTTP(v.Headers)
req.Host = req.Header.Get("Host")
if xRealIP := req.Header.Get("X-Real-IP"); xRealIP != "" {
req.RemoteAddr = xRealIP
}
// If body is compressed it will be decompressed
// Inspired by https://github.com/golang/go/blob/master/src/net/http/transport.go#L883
hasBody := req != nil && req.Method != "HEAD" && req.ContentLength != 0
if hasBody && req.Header.Get("Content-Encoding") == "gzip" {
req.Header.Del("Content-Encoding")
req.Header.Del("Content-Length")
req.ContentLength = -1
req.Body = &gzipReader{body: req.Body}
}
return req, nil
}