archiveis/http.go
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package archiveis
import (
"fmt"
"io"
"net"
"net/http"
"strings"
"time"
)
func doRequest(method string, url string, body io.ReadCloser, timeout time.Duration) (*http.Response, []byte, error) {
req, err := newRequest(method, url, body)
if err != nil {
return nil, nil, err
}
if method != "" && method != "get" {
req.Header.Set("content-type", "application/x-www-form-urlencoded")
}
client := newClient(timeout)
resp, err := client.Do(req)
if err != nil {
return resp, nil, fmt.Errorf("executing request: %s", err)
}
if resp.StatusCode/100 != 2 && resp.StatusCode/100 != 3 {
return resp, nil, fmt.Errorf("%v request to %v received unhappy response status-code=%v", method, url, resp.StatusCode)
}
respBody, err := io.ReadAll(resp.Body)
if err != nil {
return resp, nil, fmt.Errorf("reading response body: %s", err)
}
if err := resp.Body.Close(); err != nil {
return resp, respBody, fmt.Errorf("closing response body: %s", err)
}
return resp, respBody, nil
}
func newRequest(method string, url string, body io.ReadCloser) (*http.Request, error) {
req, err := http.NewRequest(method, url, body)
if err != nil {
return nil, fmt.Errorf("creating %v request to %v: %s", method, url, err)
}
req.Host = HTTPHost
hostname := strings.Split(BaseURL, "://")[1]
req.Header.Set("Host", hostname)
req.Header.Set("Origin", hostname)
req.Header.Set("Authority", hostname)
req.Header.Set("User-Agent", UserAgent)
req.Header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8")
req.Header.Set("Referer", BaseURL+"/")
return req, nil
}
func newClient(timeout time.Duration) *http.Client {
c := &http.Client{
Timeout: timeout,
Transport: &http.Transport{
Proxy: http.ProxyFromEnvironment,
Dial: (&net.Dialer{
Timeout: timeout,
KeepAlive: timeout,
}).Dial,
TLSHandshakeTimeout: timeout,
ResponseHeaderTimeout: timeout,
ExpectContinueTimeout: 1 * time.Second,
},
}
return c
}