TUN-6724: Migrate to sentry-go from raven-go

vendor/github.com/getsentry/sentry-go/internal/debug/transport.go

@@ -0,0 +1,79 @@
+package debug
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"net/http"
+	"net/http/httptrace"
+	"net/http/httputil"
+)
+
+// Transport implements http.RoundTripper and can be used to wrap other HTTP
+// transports for debugging, normally http.DefaultTransport.
+type Transport struct {
+	http.RoundTripper
+	Output io.Writer
+	// Dump controls whether to dump HTTP request and responses.
+	Dump bool
+	// Trace enables usage of net/http/httptrace.
+	Trace bool
+}
+
+func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
+	var buf bytes.Buffer
+	if t.Dump {
+		b, err := httputil.DumpRequestOut(req, true)
+		if err != nil {
+			panic(err)
+		}
+		_, err = buf.Write(ensureTrailingNewline(b))
+		if err != nil {
+			panic(err)
+		}
+	}
+	if t.Trace {
+		trace := &httptrace.ClientTrace{
+			DNSDone: func(di httptrace.DNSDoneInfo) {
+				fmt.Fprintf(&buf, "* DNS %v → %v\n", req.Host, di.Addrs)
+			},
+			GotConn: func(ci httptrace.GotConnInfo) {
+				fmt.Fprintf(&buf, "* Connection local=%v remote=%v", ci.Conn.LocalAddr(), ci.Conn.RemoteAddr())
+				if ci.Reused {
+					fmt.Fprint(&buf, " (reused)")
+				}
+				if ci.WasIdle {
+					fmt.Fprintf(&buf, " (idle %v)", ci.IdleTime)
+				}
+				fmt.Fprintln(&buf)
+			},
+		}
+		req = req.WithContext(httptrace.WithClientTrace(req.Context(), trace))
+	}
+	resp, err := t.RoundTripper.RoundTrip(req)
+	if err != nil {
+		return nil, err
+	}
+	if t.Dump {
+		b, err := httputil.DumpResponse(resp, true)
+		if err != nil {
+			panic(err)
+		}
+		_, err = buf.Write(ensureTrailingNewline(b))
+		if err != nil {
+			panic(err)
+		}
+	}
+	_, err = io.Copy(t.Output, &buf)
+	if err != nil {
+		panic(err)
+	}
+	return resp, nil
+}
+
+func ensureTrailingNewline(b []byte) []byte {
+	if len(b) > 0 && b[len(b)-1] != '\n' {
+		b = append(b, '\n')
+	}
+	return b
+}