frp/test/e2e/pkg/request/request.go

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package request
import (
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"bufio"
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"bytes"
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"crypto/tls"
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"fmt"
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"io"
"io/ioutil"
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"net"
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"net/http"
"net/url"
"strconv"
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"time"
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"github.com/fatedier/frp/test/e2e/pkg/rpc"
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libnet "github.com/fatedier/golib/net"
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)
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type Request struct {
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protocol string
// for all protocol
addr string
port int
body []byte
timeout time.Duration
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// for http or https
method string
host string
path string
headers map[string]string
tlsConfig *tls.Config
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proxyURL string
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}
func New() *Request {
return &Request{
protocol: "tcp",
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addr: "127.0.0.1",
method: "GET",
path: "/",
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}
}
func (r *Request) Protocol(protocol string) *Request {
r.protocol = protocol
return r
}
func (r *Request) TCP() *Request {
r.protocol = "tcp"
return r
}
func (r *Request) UDP() *Request {
r.protocol = "udp"
return r
}
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func (r *Request) HTTP() *Request {
r.protocol = "http"
return r
}
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func (r *Request) HTTPS() *Request {
r.protocol = "https"
return r
}
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func (r *Request) Proxy(url string) *Request {
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r.proxyURL = url
return r
}
func (r *Request) Addr(addr string) *Request {
r.addr = addr
return r
}
func (r *Request) Port(port int) *Request {
r.port = port
return r
}
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func (r *Request) HTTPParams(method, host, path string, headers map[string]string) *Request {
r.method = method
r.host = host
r.path = path
r.headers = headers
return r
}
func (r *Request) HTTPHost(host string) *Request {
r.host = host
return r
}
func (r *Request) HTTPPath(path string) *Request {
r.path = path
return r
}
func (r *Request) HTTPHeaders(headers map[string]string) *Request {
r.headers = headers
return r
}
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func (r *Request) TLSConfig(tlsConfig *tls.Config) *Request {
r.tlsConfig = tlsConfig
return r
}
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func (r *Request) Timeout(timeout time.Duration) *Request {
r.timeout = timeout
return r
}
func (r *Request) Body(content []byte) *Request {
r.body = content
return r
}
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func (r *Request) Do() (*Response, error) {
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var (
conn net.Conn
err error
)
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addr := net.JoinHostPort(r.addr, strconv.Itoa(r.port))
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// for protocol http and https
if r.protocol == "http" || r.protocol == "https" {
return r.sendHTTPRequest(r.method, fmt.Sprintf("%s://%s%s", r.protocol, addr, r.path),
r.host, r.headers, r.proxyURL, r.body, r.tlsConfig)
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}
// for protocol tcp and udp
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if len(r.proxyURL) > 0 {
if r.protocol != "tcp" {
return nil, fmt.Errorf("only tcp protocol is allowed for proxy")
}
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conn, err = libnet.DialTcpByProxy(r.proxyURL, addr)
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if err != nil {
return nil, err
}
} else {
switch r.protocol {
case "tcp":
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conn, err = net.Dial("tcp", addr)
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case "udp":
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conn, err = net.Dial("udp", addr)
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default:
return nil, fmt.Errorf("invalid protocol")
}
if err != nil {
return nil, err
}
}
defer conn.Close()
if r.timeout > 0 {
conn.SetDeadline(time.Now().Add(r.timeout))
}
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buf, err := r.sendRequestByConn(conn, r.body)
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if err != nil {
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return nil, err
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}
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return &Response{Content: buf}, nil
}
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type Response struct {
Code int
Header http.Header
Content []byte
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}
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func (r *Request) sendHTTPRequest(method, urlstr string, host string, headers map[string]string,
proxy string, body []byte, tlsConfig *tls.Config,
) (*Response, error) {
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var inBody io.Reader
if len(body) != 0 {
inBody = bytes.NewReader(body)
}
req, err := http.NewRequest(method, urlstr, inBody)
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if err != nil {
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return nil, err
}
if host != "" {
req.Host = host
}
for k, v := range headers {
req.Header.Set(k, v)
}
tr := &http.Transport{
DialContext: (&net.Dialer{
Timeout: time.Second,
KeepAlive: 30 * time.Second,
DualStack: true,
}).DialContext,
MaxIdleConns: 100,
IdleConnTimeout: 90 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
ExpectContinueTimeout: 1 * time.Second,
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TLSClientConfig: tlsConfig,
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}
if len(proxy) != 0 {
tr.Proxy = func(req *http.Request) (*url.URL, error) {
return url.Parse(proxy)
}
}
client := http.Client{Transport: tr}
resp, err := client.Do(req)
if err != nil {
return nil, err
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}
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ret := &Response{Code: resp.StatusCode, Header: resp.Header}
buf, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
ret.Content = buf
return ret, nil
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}
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func (r *Request) sendRequestByConn(c net.Conn, content []byte) ([]byte, error) {
_, err := rpc.WriteBytes(c, content)
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if err != nil {
return nil, fmt.Errorf("write error: %v", err)
}
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var reader io.Reader = c
if r.protocol == "udp" {
reader = bufio.NewReader(c)
}
buf, err := rpc.ReadBytes(reader)
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if err != nil {
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return nil, fmt.Errorf("read error: %v", err)
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}
return buf, nil
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}