49 lines
1.1 KiB
Go
49 lines
1.1 KiB
Go
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package check
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import (
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"net/http"
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"net/http/httptrace"
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"time"
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)
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//HTTPPing returns the response time to fetch a page.
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func HTTPPing(target string) (time.Duration, Result, error) {
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var totalTime time.Duration
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var err error
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successCount := 0
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okCount := 0
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for i := 0; i < TryCount; i++ {
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duration, successful, getErr := timeGet(target)
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totalTime += duration
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if getErr != nil {
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err = getErr
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}
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if successful {
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okCount++
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}
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successCount++
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}
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return divide(totalTime, successCount), statusFromSuccessCount(okCount), err
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}
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func timeGet(url string) (time.Duration, bool, error) {
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req, _ := http.NewRequest("GET", url, nil)
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var connect time.Time
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var duration time.Duration
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trace := &httptrace.ClientTrace{
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ConnectStart: func(network, addr string) { connect = time.Now() },
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GotFirstResponseByte: func() {
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duration = time.Since(connect)
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},
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}
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req = req.WithContext(httptrace.WithClientTrace(req.Context(), trace))
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res, err := http.DefaultTransport.RoundTrip(req)
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if err != nil {
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return 0, false, err
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}
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return duration, res.StatusCode < 400, nil
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}
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