github.com/meulengracht/snapd@v0.0.0-20210719210640-8bde69bcc84e/httputil/transport.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2017 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package httputil
    21  
    22  import (
    23  	"net/http"
    24  	"time"
    25  )
    26  
    27  var origDefaultTransport *http.Transport = http.DefaultTransport.(*http.Transport)
    28  var responseHeaderTimeout = 15 * time.Second
    29  
    30  // newDefaultTransport makes a fresh modifiable instance of Transport
    31  // with the same parameters as http.DefaultTransport but we also set
    32  // ResponseHeaderTimeout which is not set by default.
    33  func newDefaultTransport() *http.Transport {
    34  	// based on https://github.com/golang/go/blob/release-branch.go1.7/src/net/http/transport.go#L38
    35  	return &http.Transport{
    36  		Proxy:                 http.ProxyFromEnvironment,
    37  		DialContext:           origDefaultTransport.DialContext,
    38  		MaxIdleConns:          100,
    39  		IdleConnTimeout:       90 * time.Second,
    40  		TLSHandshakeTimeout:   10 * time.Second,
    41  		ExpectContinueTimeout: 1 * time.Second,
    42  		ResponseHeaderTimeout: responseHeaderTimeout,
    43  	}
    44  }