Patch from Nigel Kukard <nkukard@lbsd.net> which handles frame headers split over small buffers.

Net/EPP/Protocol.php

@@ -38,17 +38,18 @@ class Net_EPP_Protocol {
 	* @return PEAR_Error|string either an error or a string
 	*/
 	static function getFrame($socket) {
-		if (@feof($socket)) return new PEAR_Error('connection closed (socket is EOF)');
+		$hdr = '';
+		while (strlen($hdr) < 4)  {
+			if (@feof($socket)) return new PEAR_Error('Connection closed (socket is EOF)');
+			if (($hdrstr = @fread($socket,4 - strlen($hdr))) !== false) {
+				$hdr .= $hdrstr;
 
-		$hdr = @fread($socket, 4);
-
-		if (empty($hdr) && feof($socket)) {
-			return new PEAR_Error('connection closed (no header received and socket is EOF)');
+			} else {
+				return new PEAR_ERROR('Error reading from socket:'.$php_errormsg);
 
-		} elseif (false === $hdr) {
-			return new PEAR_Error('Error reading from peer: '.$php_errormsg);
+			}
+		}
 
-		} else {
 		$unpacked = unpack('N', $hdr);
 		$length = $unpacked[1];
 		if ($length < 5) {
@@ -60,7 +61,7 @@ class Net_EPP_Protocol {
 			// sometimes the socket can be buffered with a limit below the frame
 			// length, so we continually read from the socket until we get the full frame:
 			$frame = '';
-				while (strlen($frame) < $length) $frame .= fread($socket, ($length));
+			while (strlen($frame) < $length) $frame .= fread($socket, $length);
 
 			if (strlen($frame) > $length) {
 				return new PEAR_Error(sprintf("Frame length (%d bytes) doesn't match header (%d bytes)", strlen($frame), ($length)));
@@ -71,7 +72,6 @@ class Net_EPP_Protocol {
 			}
 		}
 	}
-	}
 
 	/**
 	* send an EPP frame to the remote peer