prober: log HTTP response body on failure

Signed-off-by: Anton Tolchanov <anton@tailscale.com>
This commit is contained in:
Anton Tolchanov 2023-12-12 19:14:25 +00:00 committed by Anton Tolchanov
parent affe11c503
commit 869b34ddeb

View File

@ -53,7 +53,12 @@ func probeHTTP(ctx context.Context, url string, want []byte) error {
} }
if !bytes.Contains(bs, want) { if !bytes.Contains(bs, want) {
return fmt.Errorf("body of %q does not contain %q", url, want) // Log response body, but truncate it if it's too large; the limit
// has been chosen arbitrarily.
if maxlen := 300; len(bs) > maxlen {
bs = bs[:maxlen]
}
return fmt.Errorf("body of %q does not contain %q (got: %q)", url, want, string(bs))
} }
return nil return nil