Resolve mail redirects https://github.com/the-djmaze/snappymail/issues/234#issuecomment-1040120224#234

snappymail/v/0.0.0/app/libraries/RainLoop/ServiceActions.php

@@ -351,6 +351,7 @@ class ServiceActions
 				\header('X-Content-Location: '.$aData['Url']);
 				$tmp = \tmpfile();
 				$HTTP = \SnappyMail\HTTP\Request::factory();
+				$HTTP->max_redirects = 2;
 				$HTTP->streamBodyTo($tmp);
 				$oResponse = $HTTP->doRequest('GET', $aData['Url']);
 				if ($oResponse && 200 === $oResponse->status
@@ -360,6 +361,7 @@ class ServiceActions
 					\header('Content-Type: ' . $oResponse->getHeader('content-type'));
 					\header('Cache-Control: public');
 					\header('Expires: '.\gmdate('D, j M Y H:i:s', 2592000 + \time()).' UTC');
+					\header('X-Content-Redirect-Location: '.$oResponse->final_uri);
 					\rewind($tmp);
 					\fpassthru($tmp);
 					exit;

snappymail/v/0.0.0/app/libraries/snappymail/http/request.php

@@ -129,6 +129,7 @@ abstract class Request
 				throw new \RuntimeException("Fetching URL not allowed: {$url}");
 			}
 
+			$this->stream && \rewind($this->stream);
 			$result = $this->__doRequest($method, $url, $body, \array_merge($this->headers, $extra_headers));
 
 			// http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3

snappymail/v/0.0.0/app/libraries/snappymail/http/request/socket.php

@@ -157,6 +157,7 @@ class Socket extends \SnappyMail\HTTP\Request
 					"\r\n" === \fread($sock, 2);
 				} else {
 					\fwrite($this->stream, \fread($sock, 1024));
+//					\stream_copy_to_stream($sock, $this->stream);
 				}
 			}
 		} else {

snappymail/v/0.0.0/app/libraries/snappymail/http/response.php

@@ -67,6 +67,11 @@ class Response
 		return null;
 	}
 
+	public function getHeaders() : array
+	{
+		return $this->headers;
+	}
+
 	public function getRedirectLocation() : ?string
 	{
 		if ($location = $this->getHeader('location')) {