REST send before RETR if restart is used. fixes #76

lib/connection.js

@@ -65,6 +65,7 @@ var FTP = module.exports = function() {
   this._keepalive = undefined;
   this._ending = false;
   this._parser = undefined;
+  this._offset = undefined;
   this.options = {
     host: undefined,
     port: undefined,
@@ -576,10 +577,24 @@ FTP.prototype.get = function(path, zcomp, cb) {
           sock.destroy();
           return cb(makeError(code, 'Compression not supported'));
         }
-        sendRetr();
+        if(self._offset !== undefined){//Append at offset
+          self._send('REST ' + self._offset, function(){
+            sendRetr();
+            self._offset = undefined;
+          });
+        }else
+          sendRetr();
       }, true);
-    } else
-      sendRetr();
+    } else{
+      if(self._offset !== undefined){//Append at offset
+        self._send('REST ' + self._offset, function(){
+          sendRetr();
+          self._offset = undefined;
+        });
+      }else
+        sendRetr();
+    }
+
 
     function sendRetr() {
       // this callback will be executed multiple times, the first is when server
@@ -617,7 +632,14 @@ FTP.prototype.get = function(path, zcomp, cb) {
 };
 
 FTP.prototype.put = function(input, path, zcomp, cb) {
-  this._store('STOR ' + path, input, zcomp, cb);
+  self = this;
+  if(self._offset !== undefined){ //Append at offset
+    self._send('REST ' + self._offset, function(){
+      this._store('STOR ' + path, input, zcomp, cb);
+      self._offset = undefined;
+    });
+  }else
+    this._store('STOR ' + path, input, zcomp, cb);
 };
 
 FTP.prototype.append = function(input, path, zcomp, cb) {
@@ -779,7 +801,9 @@ FTP.prototype.lastMod = function(path, cb) {
 };
 
 FTP.prototype.restart = function(offset, cb) {
-  this._send('REST ' + offset, cb);
+  self = this;
+  self._offset = offset;
+  cb();
 };