Added logging

src/Network/Probe.php

@@ -1532,6 +1532,7 @@ class Probe
 							self::$istimeout = true;
 							return $short ? false : [];
 						}
+						Logger::debug('Fetched public key', ['Content-Type' => $curlResult->getHeader('Content-Type'), 'url' => $pubkey]);
 						$pubkey = $curlResult->getBody();
 					}
 

src/Protocol/Salmon.php

@@ -74,6 +74,7 @@ class Salmon
 					}
 				} elseif (Strings::normaliseLink($ret[$x]) == 'http://') {
 					$ret[$x] = DI::httpClient()->fetch($ret[$x], 0, HttpClient::ACCEPT_DEFAULT);
+					Logger::debug('Fetched public key', ['url' => $ret[$x]]);
 				}
 			}
 		}