mirror of https://github.com/k3s-io/k3s
40 lines
1001 B
Markdown
40 lines
1001 B
Markdown
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## Getting Started
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### Install the handler
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We first need to serve the probing HTTP handler.
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```go
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http.HandleFunc("/health", probing.NewHandler())
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err := http.ListenAndServe(":12345", nil)
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if err != nil {
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log.Fatal("ListenAndServe: ", err)
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}
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```
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### Start to probe
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Now we can start to probe the endpoint.
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``` go
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id := "example"
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probingInterval = 5 * time.Second
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url := "http://example.com:12345/health"
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p.AddHTTP(id, probingInterval, url)
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time.Sleep(13 * time.Second)
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status, err := p.Status(id)
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fmt.Printf("Total Probing: %d, Total Loss: %d, Estimated RTT: %v, Estimated Clock Difference: %v\n",
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status.Total(), status.Loss(), status.SRTT(), status.ClockDiff())
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// Total Probing: 2, Total Loss: 0, Estimated RTT: 320.771µs, Estimated Clock Difference: -35.869µs
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```
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### TODOs:
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- TCP probing
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- UDP probing
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- Gossip based probing
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- More accurate RTT estimation
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- More accurate Clock difference estimation
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- Use a clock interface rather than the real clock
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