Channel: increase max window size

This matches OpenSSH's implementation.

Author: mscdex

lib/Channel.js

@@ -6,7 +6,7 @@ var WritableStream = require('stream').Writable;
 var STDERR = require('ssh2-streams').constants.CHANNEL_EXTENDED_DATATYPE.STDERR;
 
 var PACKET_SIZE = 32 * 1024;
-var MAX_WINDOW = 1 * 1024 * 1024;
+var MAX_WINDOW = 2 * 1024 * 1024;
 var WINDOW_THRESHOLD = MAX_WINDOW / 2;
 var CUSTOM_EVENTS = [
   'CHANNEL_EOF',