boundary should reset each time

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/sendgrid.js b/lib/sendgrid.js
index fba001b..1ad92a6 100644
--- a/lib/sendgrid.js
+++ b/lib/sendgrid.js
@@ -14,8 +14,6 @@ function SendGrid(credentials) {
   this.api_key = credentials.api_key;
 }
 
-var boundary = Math.random();
-
 /*
  * Sends an email and returns true if the
  * message was sent successfully.
@@ -25,6 +23,8 @@ var boundary = Math.random();
 SendGrid.prototype.send = function(email, callback) {
   var self = this;
 
+  var boundary = Math.random();
+
   if (email.constructor !== Email) {
     email = new Email(email);
   }
@@ -37,7 +37,7 @@ SendGrid.prototype.send = function(email, callback) {
       method: 'POST',
     };
     if (email.hasFiles()) {
-      post_data = self.getMultipartData(email);
+      post_data = self.getMultipartData(email, boundary);
       var length = 0;
       for (var buf in post_data) {
         length += post_data[buf].length;
@@ -127,7 +127,7 @@ SendGrid.prototype.getPostData = function(email) {
   return querystring.stringify(data);
 };
 
-SendGrid.prototype.getMultipartData = function(email) {
+SendGrid.prototype.getMultipartData = function(email, boundary) {
   var data = [];
   data.push(new Buffer(encodeField(boundary, 'api_user', this.api_user)));
   data.push(new Buffer(encodeField(boundary, 'api_key', this.api_key)));