72 lines
1.5 KiB
Go
72 lines
1.5 KiB
Go
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//go:build windows
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package diagnostic
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import (
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"context"
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"fmt"
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"os/exec"
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"strconv"
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"strings"
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"time"
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)
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type NetworkCollectorImpl struct{}
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func (tracer *NetworkCollectorImpl) Collect(ctx context.Context, options TraceOptions) ([]*Hop, string, error) {
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args := []string{
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"-w",
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strconv.FormatInt(int64(options.timeout.Seconds()), 10),
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"-h",
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strconv.FormatUint(options.ttl, 10),
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// Do not resolve host names (can add 30+ seconds to run time)
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"-d",
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options.address,
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}
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if options.useV4 {
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args = append(args, "-4")
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} else {
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args = append(args, "-6")
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}
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command := exec.CommandContext(ctx, "tracert.exe", args...)
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return decodeNetworkOutputToFile(command, DecodeLine)
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}
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func DecodeLine(text string) (*Hop, error) {
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fields := strings.Fields(text)
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parts := []string{}
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filter := func(s string) bool { return s != "*" && s != "ms" }
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for _, field := range fields {
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if filter(field) {
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parts = append(parts, field)
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}
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}
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index, err := strconv.ParseUint(parts[0], 10, 8)
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if err != nil {
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return nil, fmt.Errorf("couldn't parse index from timeout hop: %w", err)
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}
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if len(parts) == 1 {
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return NewTimeoutHop(uint8(index)), nil
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}
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domain := ""
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rtts := []time.Duration{}
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for _, part := range parts[1:] {
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rtt, err := strconv.ParseFloat(strings.TrimLeft(part, "<"), 64)
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if err != nil {
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domain += part + " "
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} else {
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rtts = append(rtts, time.Duration(rtt*MicrosecondsFactor))
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}
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}
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domain, _ = strings.CutSuffix(domain, " ")
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return NewHop(uint8(index), domain, rtts), nil
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}
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