Fix stall that can occur if a connect fails whilst posting

Requires post checking to be active, 'connect-fail' error skipping and some working connections
Ref #99

lib/uploader.js

@@ -242,28 +242,28 @@ Uploader.prototype = {
 									self.postActive++;
 									c.post(post, function(err, messageId) {
 										self.postActive--;
+										var postCompletionCb = doPost;
 										if(err) {
 											if(self.cancelled && err.code == 'cancelled') return;
 											dumpPost(self, post); // post.data guaranteed to be set here
 
 											// handle error skipping
 											err.skippable = true;
+											var isPostFailure = (['connect_fail','connection_ended','not_connected'].indexOf(err.code) == -1);
 											if(messageId) {
 												if(err.code == 'timeout' && self.skipErrs['post-timeout']) {
 													self._markPostError(post, 'Posting timed out');
 												} else if((err.code == 'post_denied' || err.code == 'bad_response' || err.code == 'unknown_error') && self.skipErrs['post-reject']) {
 													self._markPostError(post, 'Post rejected (' + err.message + ')');
-												} else if(err.code == 'connection_ended' || err.code == 'not_connected') { // internal error - cannot continue
-													return doPost(err);
-												} else if(self.skipErrs['post-fail'] && err.code != 'connect_fail') {
+												} else if(self.skipErrs['post-fail'] && isPostFailure) {
 													self._markPostError(post, 'Posting failed (' + err.message + ')');
 												} else
-													return doPost(err);
-											} else if(self.skipErrs['post-fail'] && ['connect_fail','connection_ended','not_connected'].indexOf(err.code) == -1) {
+													postCompletionCb = doPost.bind(null, err);
+											} else if(self.skipErrs['post-fail'] && isPostFailure) {
 												post.messageId = null; // skipping post where Message-ID is completely invalid
 												self._markPostError(post, 'Posting failed (' + err.message + ')');
 											} else
-												return doPost(err);
+												postCompletionCb = doPost.bind(null, err);
 										}
 										self.articlesPosted++;
 										self.bytesPosted += post.inputLen;
@@ -286,7 +286,7 @@ Uploader.prototype = {
 											return;
 										} else {
 											post.successful = !err;
-											self._postComplete(post, err, doPost);
+											self._postComplete(post, err, postCompletionCb);
 										}
 									});
 								});