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trace.go
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trace.go
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package phttp
import (
"net/http/httptrace"
"time"
)
type TraceTimings struct {
GotConnTime time.Time
GetConnTime time.Time
DNSStartTime time.Time
DNSDoneTime time.Time
ConnectDoneTime time.Time
ConnectStartTime time.Time
WroteRequestTime time.Time
GotFirstResponseByte time.Time
}
func (t *TraceTimings) GetReceiveTime() time.Duration {
return time.Since(t.GotFirstResponseByte)
}
func (t *TraceTimings) GetConnectTime() time.Duration {
return t.GotConnTime.Sub(t.GetConnTime)
}
func (t *TraceTimings) GetSendTime() time.Duration {
return t.WroteRequestTime.Sub(t.GotConnTime)
}
func (t *TraceTimings) GetLatency() time.Duration {
return t.GotFirstResponseByte.Sub(t.WroteRequestTime)
}
func CreateHTTPTrace() (*httptrace.ClientTrace, *TraceTimings) {
timings := &TraceTimings{}
tracer := &httptrace.ClientTrace{
GetConn: func(_ string) {
timings.GetConnTime = time.Now()
},
GotConn: func(_ httptrace.GotConnInfo) {
timings.GotConnTime = time.Now()
},
DNSStart: func(_ httptrace.DNSStartInfo) {
timings.DNSStartTime = time.Now()
},
DNSDone: func(info httptrace.DNSDoneInfo) {
timings.DNSDoneTime = time.Now()
},
ConnectStart: func(network, addr string) {
timings.ConnectStartTime = time.Now()
},
ConnectDone: func(network, addr string, err error) {
timings.ConnectDoneTime = time.Now()
},
WroteRequest: func(wr httptrace.WroteRequestInfo) {
timings.WroteRequestTime = time.Now()
},
GotFirstResponseByte: func() {
timings.GotFirstResponseByte = time.Now()
},
}
return tracer, timings
}