// Copyright 2013 The Beego Authors. All rights reserved.// Copyright 2014 The Gogs Authors. All rights reserved.// SPDX-License-Identifier: MIT package httplib import (	"bytes"	"context"	"crypto/tls"	"fmt"	"io"	"net"	"net/http"	"net/url"	"strings"	"time") var defaultSetting = Settings{"GiteaServer", 60 * time.Second, 60 * time.Second, nil, nil} // newRequest returns *Request with specific methodfunc newRequest(url, method string) *Request {	var resp http.Response	req := http.Request{		Method:     method,		Header:     make(http.Header),		Proto:      "HTTP/1.1",		ProtoMajor: 1,		ProtoMinor: 1,	}	return &Request{url, &req, map[string]string{}, defaultSetting, &resp, nil}} // NewRequest returns *Request with specific methodfunc NewRequest(url, method string) *Request {	return newRequest(url, method)} // Settings is the default settings for http clienttype Settings struct {	UserAgent        string	ConnectTimeout   time.Duration	ReadWriteTimeout time.Duration	TLSClientConfig  *tls.Config	Transport        http.RoundTripper} // Request provides more useful methods for requesting one url than http.Request.type Request struct {	url     string	req     *http.Request	params  map[string]string	setting Settings	resp    *http.Response	body    []byte} // SetContext sets the request's Contextfunc (r *Request) SetContext(ctx context.Context) *Request {	r.req = r.req.WithContext(ctx)	return r} // SetTimeout sets connect time out and read-write time out for BeegoRequest.func (r *Request) SetTimeout(connectTimeout, readWriteTimeout time.Duration) *Request {	r.setting.ConnectTimeout = connectTimeout	r.setting.ReadWriteTimeout = readWriteTimeout	return r} func (r *Request) SetReadWriteTimeout(readWriteTimeout time.Duration) *Request {	r.setting.ReadWriteTimeout = readWriteTimeout	return r} // SetTLSClientConfig sets tls connection configurations if visiting https url.func (r *Request) SetTLSClientConfig(config *tls.Config) *Request {	r.setting.TLSClientConfig = config	return r} // Header add header item string in request.func (r *Request) Header(key, value string) *Request {	r.req.Header.Set(key, value)	return r} // SetTransport sets transport tofunc (r *Request) SetTransport(transport http.RoundTripper) *Request {	r.setting.Transport = transport	return r} // Param adds query param in to request.// params build query string as ?key1=value1&key2=value2...func (r *Request) Param(key, value string) *Request {	r.params[key] = value	return r} // Body adds request raw body.// it supports string and []byte.func (r *Request) Body(data any) *Request {	switch t := data.(type) {	case string:		bf := bytes.NewBufferString(t)		r.req.Body = io.NopCloser(bf)		r.req.ContentLength = int64(len(t))	case []byte:		bf := bytes.NewBuffer(t)		r.req.Body = io.NopCloser(bf)		r.req.ContentLength = int64(len(t))	}	return r} func (r *Request) getResponse() (*http.Response, error) {	if r.resp.StatusCode != 0 {		return r.resp, nil	} 	var paramBody string	if len(r.params) > 0 {		var buf bytes.Buffer		for k, v := range r.params {			buf.WriteString(url.QueryEscape(k))			buf.WriteByte('=')			buf.WriteString(url.QueryEscape(v))			buf.WriteByte('&')		}		paramBody = buf.String()		paramBody = paramBody[0 : len(paramBody)-1]	} 	if r.req.Method == "GET" && len(paramBody) > 0 {		if strings.Contains(r.url, "?") {			r.url += "&" + paramBody		} else {			r.url = r.url + "?" + paramBody		}	} else if r.req.Method == "POST" && r.req.Body == nil && len(paramBody) > 0 {		r.Header("Content-Type", "application/x-www-form-urlencoded")		r.Body(paramBody)	} 	var err error	r.req.URL, err = url.Parse(r.url)	if err != nil {		return nil, err	} 	trans := r.setting.Transport	if trans == nil {		// create default transport		trans = &http.Transport{			TLSClientConfig: r.setting.TLSClientConfig,			Proxy:           http.ProxyFromEnvironment,			DialContext:     TimeoutDialer(r.setting.ConnectTimeout),		}	} else if t, ok := trans.(*http.Transport); ok {		if t.TLSClientConfig == nil {			t.TLSClientConfig = r.setting.TLSClientConfig		}		if t.DialContext == nil {			t.DialContext = TimeoutDialer(r.setting.ConnectTimeout)		}	} 	client := &http.Client{		Transport: trans,		Timeout:   r.setting.ReadWriteTimeout,	} 	if len(r.setting.UserAgent) > 0 && len(r.req.Header.Get("User-Agent")) == 0 {		r.req.Header.Set("User-Agent", r.setting.UserAgent)	} 	resp, err := client.Do(r.req)	if err != nil {		return nil, err	}	r.resp = resp	return resp, nil} // Response executes request client gets response manually.func (r *Request) Response() (*http.Response, error) {	return r.getResponse()} // TimeoutDialer returns functions of connection dialer with timeout settings for http.Transport Dial field.func TimeoutDialer(cTimeout time.Duration) func(ctx context.Context, net, addr string) (c net.Conn, err error) {	return func(ctx context.Context, netw, addr string) (net.Conn, error) {		d := net.Dialer{Timeout: cTimeout}		conn, err := d.DialContext(ctx, netw, addr)		if err != nil {			return nil, err		}		return conn, nil	}} func (r *Request) GoString() string {	return fmt.Sprintf("%s %s", r.req.Method, r.url)}