Multipart form requests need to use \r\n instead of only \n #74

Added function that replaces line feeds \n with carriage return \r in body. It also recalcultes the content length header.

src/transaction-runner.coffee

@@ -17,7 +17,7 @@ logger = require './logger'
 
 
 String::startsWith = (str) ->
-    return this.slice(0, str.length) is str
+  return this.slice(0, str.length) is str
 
 class TransactionRunner
   constructor: (@configuration) ->
@@ -193,11 +193,23 @@ class TransactionRunner
 
       transport = if transaction.protocol is 'https:' then https else http
       try
+
+        if transaction.request['body'] != ''
+          @replaceLineFeedInBody transaction, requestOptions
+
         req = transport.request requestOptions, handleRequest
         req.write transaction.request['body'] if transaction.request['body'] != ''
         req.end()
       catch error
         configuration.emitter.emit 'test error', error, test if error
         return callback()
 
+  replaceLineFeedInBody: (transaction, requestOptions) =>
+    logger.debug 'Content-Length before: ' + requestOptions['headers']['Content-Length']
+    transaction.request['body'] = transaction.request['body'].replace(/\n/g, '\r\n')
+    transaction.request['headers']['Content-Length'] = transaction.request['body'].length
+    requestOptions.headers = transaction.request['headers']
+    logger.debug 'Content-Length after: '  + requestOptions['headers']['Content-Length']
+
+
 module.exports = TransactionRunner