Clear current token properly

Author: stevebauman

src/Connection/ImapParser.php

@@ -104,7 +104,7 @@ protected function parseUntaggedResponse(): UntaggedResponse
 
         // If the end-of-response marker (CRLF) is present, consume it.
         if ($this->currentToken && $this->isEndOfResponseToken($this->currentToken)) {
-            $this->advance();
+            $this->currentToken = null;
         } else {
             throw new ImapParseException('Unterminated untagged response');
         }
@@ -133,7 +133,7 @@ protected function parseContinuationResponse(): ContinuationResponse
 
         // Consume the CRLF marker if present.
         if ($this->currentToken && $this->isEndOfResponseToken($this->currentToken)) {
-            $this->advance();
+            $this->currentToken = null;
         } else {
             throw new ImapParseException('Unterminated continuation response');
         }
@@ -160,7 +160,7 @@ protected function parseTaggedResponse(): TaggedResponse
 
         // Consume the CRLF marker if present.
         if ($this->currentToken && $this->isEndOfResponseToken($this->currentToken)) {
-            $this->advance();
+            $this->currentToken = null;
         } else {
             throw new ImapParseException('Unterminated tagged response');
         }

src/Connection/ImapStream.php

@@ -31,6 +31,8 @@ public function open(string $transport, string $host, int $port, int $timeout, a
             throw new ConnectionFailedException('Stream failed to open: '.$errstr, $errno);
         }
 
+        stream_set_blocking($this->stream, true);
+
         return true;
     }