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// Copyright 2014 beego Author. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package httplib is used as http.Client
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// Usage:
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//
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// import "github.com/astaxie/beego/httplib"
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//
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// b := httplib.Post("http://beego.me/")
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// b.Param("username","astaxie")
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// b.Param("password","123456")
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// b.PostFile("uploadfile1", "httplib.pdf")
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// b.PostFile("uploadfile2", "httplib.txt")
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// str, err := b.String()
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// if err != nil {
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// t.Fatal(err)
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// }
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// fmt.Println(str)
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//
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// more docs http://beego.me/docs/module/httplib.md
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package httplib
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import (
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"bytes"
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"compress/gzip"
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"crypto/tls"
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"encoding/json"
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"encoding/xml"
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"io"
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"io/ioutil"
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"log"
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"mime/multipart"
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"net"
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"net/http"
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"net/http/cookiejar"
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"net/http/httputil"
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"net/url"
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"os"
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"path"
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"strings"
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"sync"
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"time"
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"gopkg.in/yaml.v2"
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)
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var defaultSetting = BeegoHTTPSettings{
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UserAgent: "beegoServer",
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ConnectTimeout: 60 * time.Second,
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ReadWriteTimeout: 60 * time.Second,
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Gzip: true,
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DumpBody: true,
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}
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var defaultCookieJar http.CookieJar
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var settingMutex sync.Mutex
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// createDefaultCookie creates a global cookiejar to store cookies.
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func createDefaultCookie() {
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settingMutex.Lock()
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defer settingMutex.Unlock()
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defaultCookieJar, _ = cookiejar.New(nil)
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}
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// SetDefaultSetting Overwrite default settings
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func SetDefaultSetting(setting BeegoHTTPSettings) {
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settingMutex.Lock()
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defer settingMutex.Unlock()
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defaultSetting = setting
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}
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// NewBeegoRequest return *BeegoHttpRequest with specific method
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func NewBeegoRequest(rawurl, method string) *BeegoHTTPRequest {
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var resp http.Response
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u, err := url.Parse(rawurl)
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if err != nil {
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log.Println("Httplib:", err)
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}
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req := http.Request{
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URL: u,
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Method: method,
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Header: make(http.Header),
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Proto: "HTTP/1.1",
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ProtoMajor: 1,
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ProtoMinor: 1,
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}
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return &BeegoHTTPRequest{
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url: rawurl,
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req: &req,
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params: map[string][]string{},
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files: map[string]string{},
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setting: defaultSetting,
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resp: &resp,
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}
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}
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// Get returns *BeegoHttpRequest with GET method.
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func Get(url string) *BeegoHTTPRequest {
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return NewBeegoRequest(url, "GET")
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}
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// Post returns *BeegoHttpRequest with POST method.
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func Post(url string) *BeegoHTTPRequest {
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return NewBeegoRequest(url, "POST")
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}
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// Put returns *BeegoHttpRequest with PUT method.
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func Put(url string) *BeegoHTTPRequest {
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return NewBeegoRequest(url, "PUT")
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}
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// Delete returns *BeegoHttpRequest DELETE method.
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func Delete(url string) *BeegoHTTPRequest {
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return NewBeegoRequest(url, "DELETE")
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}
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// Head returns *BeegoHttpRequest with HEAD method.
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func Head(url string) *BeegoHTTPRequest {
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return NewBeegoRequest(url, "HEAD")
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}
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// BeegoHTTPSettings is the http.Client setting
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type BeegoHTTPSettings struct {
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ShowDebug bool
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UserAgent string
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ConnectTimeout time.Duration
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ReadWriteTimeout time.Duration
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TLSClientConfig *tls.Config
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Proxy func(*http.Request) (*url.URL, error)
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Transport http.RoundTripper
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CheckRedirect func(req *http.Request, via []*http.Request) error
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EnableCookie bool
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Gzip bool
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DumpBody bool
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Retries int // if set to -1 means will retry forever
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}
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// BeegoHTTPRequest provides more useful methods for requesting one url than http.Request.
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type BeegoHTTPRequest struct {
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url string
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req *http.Request
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params map[string][]string
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files map[string]string
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setting BeegoHTTPSettings
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resp *http.Response
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body []byte
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dump []byte
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}
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// GetRequest return the request object
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func (b *BeegoHTTPRequest) GetRequest() *http.Request {
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return b.req
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}
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// Setting Change request settings
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func (b *BeegoHTTPRequest) Setting(setting BeegoHTTPSettings) *BeegoHTTPRequest {
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b.setting = setting
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return b
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}
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// SetBasicAuth sets the request's Authorization header to use HTTP Basic Authentication with the provided username and password.
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func (b *BeegoHTTPRequest) SetBasicAuth(username, password string) *BeegoHTTPRequest {
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b.req.SetBasicAuth(username, password)
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return b
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}
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// SetEnableCookie sets enable/disable cookiejar
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func (b *BeegoHTTPRequest) SetEnableCookie(enable bool) *BeegoHTTPRequest {
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b.setting.EnableCookie = enable
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return b
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}
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// SetUserAgent sets User-Agent header field
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func (b *BeegoHTTPRequest) SetUserAgent(useragent string) *BeegoHTTPRequest {
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b.setting.UserAgent = useragent
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return b
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}
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// Debug sets show debug or not when executing request.
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func (b *BeegoHTTPRequest) Debug(isdebug bool) *BeegoHTTPRequest {
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b.setting.ShowDebug = isdebug
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return b
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}
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// Retries sets Retries times.
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// default is 0 means no retried.
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// -1 means retried forever.
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// others means retried times.
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func (b *BeegoHTTPRequest) Retries(times int) *BeegoHTTPRequest {
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b.setting.Retries = times
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return b
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}
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// DumpBody setting whether need to Dump the Body.
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func (b *BeegoHTTPRequest) DumpBody(isdump bool) *BeegoHTTPRequest {
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b.setting.DumpBody = isdump
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return b
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}
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// DumpRequest return the DumpRequest
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func (b *BeegoHTTPRequest) DumpRequest() []byte {
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return b.dump
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}
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// SetTimeout sets connect time out and read-write time out for BeegoRequest.
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func (b *BeegoHTTPRequest) SetTimeout(connectTimeout, readWriteTimeout time.Duration) *BeegoHTTPRequest {
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b.setting.ConnectTimeout = connectTimeout
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b.setting.ReadWriteTimeout = readWriteTimeout
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return b
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}
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// SetTLSClientConfig sets tls connection configurations if visiting https url.
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func (b *BeegoHTTPRequest) SetTLSClientConfig(config *tls.Config) *BeegoHTTPRequest {
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b.setting.TLSClientConfig = config
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return b
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}
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// Header add header item string in request.
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func (b *BeegoHTTPRequest) Header(key, value string) *BeegoHTTPRequest {
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b.req.Header.Set(key, value)
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return b
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}
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// SetHost set the request host
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func (b *BeegoHTTPRequest) SetHost(host string) *BeegoHTTPRequest {
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b.req.Host = host
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return b
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}
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// SetProtocolVersion Set the protocol version for incoming requests.
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// Client requests always use HTTP/1.1.
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func (b *BeegoHTTPRequest) SetProtocolVersion(vers string) *BeegoHTTPRequest {
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if len(vers) == 0 {
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vers = "HTTP/1.1"
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}
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major, minor, ok := http.ParseHTTPVersion(vers)
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if ok {
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b.req.Proto = vers
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b.req.ProtoMajor = major
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b.req.ProtoMinor = minor
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}
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return b
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}
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// SetCookie add cookie into request.
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func (b *BeegoHTTPRequest) SetCookie(cookie *http.Cookie) *BeegoHTTPRequest {
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b.req.Header.Add("Cookie", cookie.String())
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return b
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}
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// SetTransport set the setting transport
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func (b *BeegoHTTPRequest) SetTransport(transport http.RoundTripper) *BeegoHTTPRequest {
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b.setting.Transport = transport
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return b
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}
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// SetProxy set the http proxy
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// example:
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//
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// func(req *http.Request) (*url.URL, error) {
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// u, _ := url.ParseRequestURI("http://127.0.0.1:8118")
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// return u, nil
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// }
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func (b *BeegoHTTPRequest) SetProxy(proxy func(*http.Request) (*url.URL, error)) *BeegoHTTPRequest {
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b.setting.Proxy = proxy
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return b
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}
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// SetCheckRedirect specifies the policy for handling redirects.
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//
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// If CheckRedirect is nil, the Client uses its default policy,
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// which is to stop after 10 consecutive requests.
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func (b *BeegoHTTPRequest) SetCheckRedirect(redirect func(req *http.Request, via []*http.Request) error) *BeegoHTTPRequest {
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b.setting.CheckRedirect = redirect
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return b
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}
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// Param adds query param in to request.
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// params build query string as ?key1=value1&key2=value2...
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func (b *BeegoHTTPRequest) Param(key, value string) *BeegoHTTPRequest {
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if param, ok := b.params[key]; ok {
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b.params[key] = append(param, value)
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} else {
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b.params[key] = []string{value}
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}
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return b
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}
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// PostFile add a post file to the request
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func (b *BeegoHTTPRequest) PostFile(formname, filename string) *BeegoHTTPRequest {
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b.files[formname] = filename
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return b
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}
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// Body adds request raw body.
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// it supports string and []byte.
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func (b *BeegoHTTPRequest) Body(data interface{}) *BeegoHTTPRequest {
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switch t := data.(type) {
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case string:
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bf := bytes.NewBufferString(t)
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b.req.Body = ioutil.NopCloser(bf)
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b.req.ContentLength = int64(len(t))
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case []byte:
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bf := bytes.NewBuffer(t)
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b.req.Body = ioutil.NopCloser(bf)
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b.req.ContentLength = int64(len(t))
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}
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return b
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}
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// XMLBody adds request raw body encoding by XML.
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func (b *BeegoHTTPRequest) XMLBody(obj interface{}) (*BeegoHTTPRequest, error) {
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if b.req.Body == nil && obj != nil {
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byts, err := xml.Marshal(obj)
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if err != nil {
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return b, err
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}
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b.req.Body = ioutil.NopCloser(bytes.NewReader(byts))
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b.req.ContentLength = int64(len(byts))
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b.req.Header.Set("Content-Type", "application/xml")
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}
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return b, nil
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}
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// YAMLBody adds request raw body encoding by YAML.
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func (b *BeegoHTTPRequest) YAMLBody(obj interface{}) (*BeegoHTTPRequest, error) {
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if b.req.Body == nil && obj != nil {
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byts, err := yaml.Marshal(obj)
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if err != nil {
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return b, err
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}
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b.req.Body = ioutil.NopCloser(bytes.NewReader(byts))
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b.req.ContentLength = int64(len(byts))
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b.req.Header.Set("Content-Type", "application/x+yaml")
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}
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return b, nil
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}
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// JSONBody adds request raw body encoding by JSON.
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func (b *BeegoHTTPRequest) JSONBody(obj interface{}) (*BeegoHTTPRequest, error) {
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if b.req.Body == nil && obj != nil {
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byts, err := json.Marshal(obj)
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if err != nil {
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return b, err
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}
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b.req.Body = ioutil.NopCloser(bytes.NewReader(byts))
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b.req.ContentLength = int64(len(byts))
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b.req.Header.Set("Content-Type", "application/json")
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}
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return b, nil
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}
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func (b *BeegoHTTPRequest) buildURL(paramBody string) {
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// build GET url with query string
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if b.req.Method == "GET" && len(paramBody) > 0 {
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if strings.Contains(b.url, "?") {
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b.url += "&" + paramBody
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} else {
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b.url = b.url + "?" + paramBody
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}
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return
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}
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// build POST/PUT/PATCH url and body
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if (b.req.Method == "POST" || b.req.Method == "PUT" || b.req.Method == "PATCH" || b.req.Method == "DELETE") && b.req.Body == nil {
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// with files
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if len(b.files) > 0 {
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pr, pw := io.Pipe()
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bodyWriter := multipart.NewWriter(pw)
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go func() {
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|
|
for formname, filename := range b.files {
|
|
|
|
fileWriter, err := bodyWriter.CreateFormFile(formname, filename)
|
|
|
|
if err != nil {
|
|
|
|
log.Println("Httplib:", err)
|
|
|
|
}
|
|
|
|
fh, err := os.Open(filename)
|
|
|
|
if err != nil {
|
|
|
|
log.Println("Httplib:", err)
|
|
|
|
}
|
|
|
|
//iocopy
|
|
|
|
_, err = io.Copy(fileWriter, fh)
|
|
|
|
fh.Close()
|
|
|
|
if err != nil {
|
|
|
|
log.Println("Httplib:", err)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
for k, v := range b.params {
|
|
|
|
for _, vv := range v {
|
|
|
|
bodyWriter.WriteField(k, vv)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
bodyWriter.Close()
|
|
|
|
pw.Close()
|
|
|
|
}()
|
|
|
|
b.Header("Content-Type", bodyWriter.FormDataContentType())
|
|
|
|
b.req.Body = ioutil.NopCloser(pr)
|
|
|
|
b.Header("Transfer-Encoding", "chunked")
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
|
|
|
// with params
|
|
|
|
if len(paramBody) > 0 {
|
|
|
|
b.Header("Content-Type", "application/x-www-form-urlencoded")
|
|
|
|
b.Body(paramBody)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
func (b *BeegoHTTPRequest) getResponse() (*http.Response, error) {
|
|
|
|
if b.resp.StatusCode != 0 {
|
|
|
|
return b.resp, nil
|
|
|
|
}
|
|
|
|
resp, err := b.DoRequest()
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
b.resp = resp
|
|
|
|
return resp, nil
|
|
|
|
}
|
|
|
|
|
|
|
|
// DoRequest will do the client.Do
|
|
|
|
func (b *BeegoHTTPRequest) DoRequest() (resp *http.Response, err error) {
|
|
|
|
var paramBody string
|
|
|
|
if len(b.params) > 0 {
|
|
|
|
var buf bytes.Buffer
|
|
|
|
for k, v := range b.params {
|
|
|
|
for _, vv := range v {
|
|
|
|
buf.WriteString(url.QueryEscape(k))
|
|
|
|
buf.WriteByte('=')
|
|
|
|
buf.WriteString(url.QueryEscape(vv))
|
|
|
|
buf.WriteByte('&')
|
|
|
|
}
|
|
|
|
}
|
|
|
|
paramBody = buf.String()
|
|
|
|
paramBody = paramBody[0 : len(paramBody)-1]
|
|
|
|
}
|
|
|
|
|
|
|
|
b.buildURL(paramBody)
|
|
|
|
urlParsed, err := url.Parse(b.url)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
|
|
|
b.req.URL = urlParsed
|
|
|
|
|
|
|
|
trans := b.setting.Transport
|
|
|
|
|
|
|
|
if trans == nil {
|
|
|
|
// create default transport
|
|
|
|
trans = &http.Transport{
|
|
|
|
TLSClientConfig: b.setting.TLSClientConfig,
|
|
|
|
Proxy: b.setting.Proxy,
|
|
|
|
Dial: TimeoutDialer(b.setting.ConnectTimeout, b.setting.ReadWriteTimeout),
|
|
|
|
MaxIdleConnsPerHost: 100,
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
// if b.transport is *http.Transport then set the settings.
|
|
|
|
if t, ok := trans.(*http.Transport); ok {
|
|
|
|
if t.TLSClientConfig == nil {
|
|
|
|
t.TLSClientConfig = b.setting.TLSClientConfig
|
|
|
|
}
|
|
|
|
if t.Proxy == nil {
|
|
|
|
t.Proxy = b.setting.Proxy
|
|
|
|
}
|
|
|
|
if t.Dial == nil {
|
|
|
|
t.Dial = TimeoutDialer(b.setting.ConnectTimeout, b.setting.ReadWriteTimeout)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
var jar http.CookieJar
|
|
|
|
if b.setting.EnableCookie {
|
|
|
|
if defaultCookieJar == nil {
|
|
|
|
createDefaultCookie()
|
|
|
|
}
|
|
|
|
jar = defaultCookieJar
|
|
|
|
}
|
|
|
|
|
|
|
|
client := &http.Client{
|
|
|
|
Transport: trans,
|
|
|
|
Jar: jar,
|
|
|
|
}
|
|
|
|
|
|
|
|
if b.setting.UserAgent != "" && b.req.Header.Get("User-Agent") == "" {
|
|
|
|
b.req.Header.Set("User-Agent", b.setting.UserAgent)
|
|
|
|
}
|
|
|
|
|
|
|
|
if b.setting.CheckRedirect != nil {
|
|
|
|
client.CheckRedirect = b.setting.CheckRedirect
|
|
|
|
}
|
|
|
|
|
|
|
|
if b.setting.ShowDebug {
|
|
|
|
dump, err := httputil.DumpRequest(b.req, b.setting.DumpBody)
|
|
|
|
if err != nil {
|
|
|
|
log.Println(err.Error())
|
|
|
|
}
|
|
|
|
b.dump = dump
|
|
|
|
}
|
|
|
|
// retries default value is 0, it will run once.
|
|
|
|
// retries equal to -1, it will run forever until success
|
|
|
|
// retries is setted, it will retries fixed times.
|
|
|
|
for i := 0; b.setting.Retries == -1 || i <= b.setting.Retries; i++ {
|
|
|
|
resp, err = client.Do(b.req)
|
|
|
|
if err == nil {
|
|
|
|
break
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return resp, err
|
|
|
|
}
|
|
|
|
|
|
|
|
// String returns the body string in response.
|
|
|
|
// it calls Response inner.
|
|
|
|
func (b *BeegoHTTPRequest) String() (string, error) {
|
|
|
|
data, err := b.Bytes()
|
|
|
|
if err != nil {
|
|
|
|
return "", err
|
|
|
|
}
|
|
|
|
|
|
|
|
return string(data), nil
|
|
|
|
}
|
|
|
|
|
|
|
|
// Bytes returns the body []byte in response.
|
|
|
|
// it calls Response inner.
|
|
|
|
func (b *BeegoHTTPRequest) Bytes() ([]byte, error) {
|
|
|
|
if b.body != nil {
|
|
|
|
return b.body, nil
|
|
|
|
}
|
|
|
|
resp, err := b.getResponse()
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
if resp.Body == nil {
|
|
|
|
return nil, nil
|
|
|
|
}
|
|
|
|
defer resp.Body.Close()
|
|
|
|
if b.setting.Gzip && resp.Header.Get("Content-Encoding") == "gzip" {
|
|
|
|
reader, err := gzip.NewReader(resp.Body)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
b.body, err = ioutil.ReadAll(reader)
|
|
|
|
return b.body, err
|
|
|
|
}
|
|
|
|
b.body, err = ioutil.ReadAll(resp.Body)
|
|
|
|
return b.body, err
|
|
|
|
}
|
|
|
|
|
|
|
|
// ToFile saves the body data in response to one file.
|
|
|
|
// it calls Response inner.
|
|
|
|
func (b *BeegoHTTPRequest) ToFile(filename string) error {
|
|
|
|
resp, err := b.getResponse()
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
if resp.Body == nil {
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
defer resp.Body.Close()
|
|
|
|
err = pathExistAndMkdir(filename)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
f, err := os.Create(filename)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
defer f.Close()
|
|
|
|
_, err = io.Copy(f, resp.Body)
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
//Check that the file directory exists, there is no automatically created
|
|
|
|
func pathExistAndMkdir(filename string) (err error) {
|
|
|
|
filename = path.Dir(filename)
|
|
|
|
_, err = os.Stat(filename)
|
|
|
|
if err == nil {
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
if os.IsNotExist(err) {
|
|
|
|
err = os.MkdirAll(filename, os.ModePerm)
|
|
|
|
if err == nil {
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
// ToJSON returns the map that marshals from the body bytes as json in response .
|
|
|
|
// it calls Response inner.
|
|
|
|
func (b *BeegoHTTPRequest) ToJSON(v interface{}) error {
|
|
|
|
data, err := b.Bytes()
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
return json.Unmarshal(data, v)
|
|
|
|
}
|
|
|
|
|
|
|
|
// ToXML returns the map that marshals from the body bytes as xml in response .
|
|
|
|
// it calls Response inner.
|
|
|
|
func (b *BeegoHTTPRequest) ToXML(v interface{}) error {
|
|
|
|
data, err := b.Bytes()
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
return xml.Unmarshal(data, v)
|
|
|
|
}
|
|
|
|
|
|
|
|
// ToYAML returns the map that marshals from the body bytes as yaml in response .
|
|
|
|
// it calls Response inner.
|
|
|
|
func (b *BeegoHTTPRequest) ToYAML(v interface{}) error {
|
|
|
|
data, err := b.Bytes()
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
return yaml.Unmarshal(data, v)
|
|
|
|
}
|
|
|
|
|
|
|
|
// Response executes request client gets response mannually.
|
|
|
|
func (b *BeegoHTTPRequest) Response() (*http.Response, error) {
|
|
|
|
return b.getResponse()
|
|
|
|
}
|
|
|
|
|
|
|
|
// TimeoutDialer returns functions of connection dialer with timeout settings for http.Transport Dial field.
|
|
|
|
func TimeoutDialer(cTimeout time.Duration, rwTimeout time.Duration) func(net, addr string) (c net.Conn, err error) {
|
|
|
|
return func(netw, addr string) (net.Conn, error) {
|
|
|
|
conn, err := net.DialTimeout(netw, addr, cTimeout)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
err = conn.SetDeadline(time.Now().Add(rwTimeout))
|
|
|
|
return conn, err
|
|
|
|
}
|
|
|
|
} |
