46 lines
1.1 KiB
Go
46 lines
1.1 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build !js && !wasm
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package ipnlocal
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import (
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"fmt"
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"net/http"
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"runtime"
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"runtime/pprof"
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"strconv"
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)
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func init() {
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c2nLogHeap = func(w http.ResponseWriter, r *http.Request) {
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// Support same optional gc parameter as net/http/pprof:
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if gc, _ := strconv.Atoi(r.FormValue("gc")); gc > 0 {
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runtime.GC()
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}
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pprof.WriteHeapProfile(w)
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}
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c2nPprof = func(w http.ResponseWriter, r *http.Request, profile string) {
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w.Header().Set("X-Content-Type-Options", "nosniff")
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p := pprof.Lookup(string(profile))
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if p == nil {
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http.Error(w, "Unknown profile", http.StatusNotFound)
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return
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}
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gc, _ := strconv.Atoi(r.FormValue("gc"))
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if profile == "heap" && gc > 0 {
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runtime.GC()
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}
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debug, _ := strconv.Atoi(r.FormValue("debug"))
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if debug != 0 {
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w.Header().Set("Content-Type", "text/plain; charset=utf-8")
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} else {
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w.Header().Set("Content-Type", "application/octet-stream")
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w.Header().Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"`, profile))
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}
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p.WriteTo(w, debug)
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}
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}
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