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net/tshttpproxy: add more winhttp logging 

Notably around duration of calls.
reviewable/pr727/r1
Brad Fitzpatrick 2020-08-28 21:37:49 -07:00
parent 1e0be5a458
commit 74ee374667
1 changed files with 7 additions and 1 deletions
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8
net/tshttpproxy/tshttpproxy_windows.go
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@ -12,6 +12,7 @@ import (
"net/url" "net/url"
"strings" "strings"
"syscall" "syscall"
"time"
"unsafe" "unsafe"
"github.com/alexbrainman/sspi/negotiate" "github.com/alexbrainman/sspi/negotiate"
@ -44,14 +45,19 @@ func proxyFromWinHTTP(req *http.Request) (*url.URL, error) {
} }
defer whi.Close() defer whi.Close()
t0 := time.Now()
v, err := whi.GetProxyForURL(urlStr) v, err := whi.GetProxyForURL(urlStr)
td := time.Since(t0)
if td >= 250*time.Millisecond {
log.Printf("tshttpproxy: winhttp: GetProxyForURL(%q) = len %d, %v (after %v)", urlStr, len(v), err, td.Round(time.Millisecond))
}
if err != nil { if err != nil {
// See https://docs.microsoft.com/en-us/windows/win32/winhttp/error-messages // See https://docs.microsoft.com/en-us/windows/win32/winhttp/error-messages
const ERROR_WINHTTP_AUTODETECTION_FAILED = 12180 const ERROR_WINHTTP_AUTODETECTION_FAILED = 12180
if err == syscall.Errno(ERROR_WINHTTP_AUTODETECTION_FAILED) { if err == syscall.Errno(ERROR_WINHTTP_AUTODETECTION_FAILED) {
return nil, nil return nil, nil
} }
log.Printf("winhttp: GetProxyForURL(%q): %v (%T, %#v)", urlStr, err, err, err) log.Printf("tshttpproxy: winhttp: GetProxyForURL(%q): %v (%T, %#v)", urlStr, err, err, err)
return nil, nil return nil, nil
} }
if v != "" { if v != "" {