Function NewDebugClientTrace

pkg/httpdbg/debug.go:78–99

NewDebugClientTrace returns a Go http trace client predefined to write DNS and connection information to the log. This is used via the --http-trace flag on push and pull operations in ctr.

(ctx context.Context)

// NewDebugClientTrace returns a Go http trace client predefined to write DNS and connection
// information to the log. This is used via the --http-trace flag on push and pull operations in ctr.
func NewDebugClientTrace(ctx context.Context) *httptrace.ClientTrace {
	return &httptrace.ClientTrace{
		DNSStart: func(dnsInfo httptrace.DNSStartInfo) {
			log.G(ctx).WithField("host", dnsInfo.Host).Debugf("DNS lookup")
		},
		DNSDone: func(dnsInfo httptrace.DNSDoneInfo) {
			if dnsInfo.Err != nil {
				log.G(ctx).WithField("lookup_err", dnsInfo.Err).Debugf("DNS lookup error")
			} else {
				log.G(ctx).WithField("result", dnsInfo.Addrs[0].String()).WithField("coalesced", dnsInfo.Coalesced).Debugf("DNS lookup complete")
			}
		},
		GotConn: func(connInfo httptrace.GotConnInfo) {
			remoteAddr := "<nil>"
			if addr := connInfo.Conn.RemoteAddr(); addr != nil {
				remoteAddr = addr.String()
			}

			log.G(ctx).WithField("reused", connInfo.Reused).WithField("remote_addr", remoteAddr).Debugf("Connection successful")
		},
	}
}

type traceTransport struct {
	tracer    *httptrace.ClientTrace