requests

type Client interface {
	Do(req *http.Request) (*http.Response, error)
}

type ClientImpl struct {
	*http.Client
}

type HTTPTraceInfo struct {
	DNSLookup    time.Duration
	ConnTime     time.Duration
	TCPConnTime  time.Duration
	TLSHandshake time.Duration

	ServerTime   time.Duration
	ResponseTime time.Duration
	TotalTime    time.Duration

	IsConnReused bool

	IsConnWasIdle bool
	ConnIdleTime  time.Duration
}

type Handler func(Middleware)

type Middleware interface {
	//Go on.
	Next()
	Stop(...error)
	// Returns the standard request object.
	GetRequest() *http.Request
	// Returns carry information for HTTP requests.
	GetRespone() *Response
	// Returns http package data.
	GetResponeBody() []byte
	IsStopped() bool
	// Is HTTP/2 Cleartext Request.
	IsH2C() bool
	Context() context.Context
	WithContextFromMiddleware(context.Context)
	// Turn on link tracking for HTTP connections.
	EnableTraceFromMiddleware()
	// Set up client.
	SetClientFromMiddleware(Client)
}

type Request interface {
	// HTTP POST method.
	Post() Request
	// HTTP PUT method.
	Put() Request
	// HTTP GET method.
	Get() Request
	// HTTP DELETE method.
	Delete() Request
	// HTTP HEAD method.
	Head() Request
	// HTTP OPTIONS method.
	Options() Request
	// Set up JSON data.
	SetJSONBody(obj interface{}) Request
	// Set the original data.
	SetBody(byts []byte) Request
	// Set up Form data.
	SetFormBody(url.Values) Request
	// Set up File data.
	SetFile(field, file string) Request
	// The data is returned after the request and converted to JSON data.
	ToJSON(obj interface{}) *Response
	// The data is returned after the request and converted into a string.
	ToString() (string, *Response)
	// The data is returned after the request and converted into a []byte.
	ToBytes() ([]byte, *Response)
	// The data is returned after the request and converted to XML data.
	ToXML(v interface{}) *Response
	// Set the request parameters.
	SetQueryParam(key string, value interface{}) Request
	// Set the request parameters.
	SetQueryParams(map[string]interface{}) Request
	URL() string
	Context() context.Context
	WithContext(context.Context) Request
	// idempotent request processing, need to fill in KEY.
	Singleflight(key ...interface{}) Request
	// Set up HTTP Header information.
	SetHeader(header http.Header) Request
	// Set up HTTP Header value.
	SetHeaderValue(key, value string) Request
	// Returns the header of the current request.
	Header() http.Header
	// Returns the Request of the standard library.
	GetStdRequest() *http.Request
	// Add cookie information.
	AddCookie(*http.Cookie) Request
	// Turn on link tracking.
	EnableTrace() Request
	// Set up client.
	SetClient(client Client) Request
}

type Response struct {
	Error         error
	HTTP11        bool
	ContentType   string
	Status        string // e.g. "200 OK"
	StatusCode    int    // e.g. 200
	Proto         string // e.g. "HTTP/1.0"
	ProtoMajor    int    // e.g. 1
	ProtoMinor    int    // e.g. 0
	Header        http.Header
	ContentLength int64
	Uncompressed  bool
	// contains filtered or unexported fields
}