@Anthony Accioly , you're better at this than i am. I'll try it tomorrow, but i don't think i know golang enough to deal with it. Do you have an iOS device where you can test this? 

 I unintentionally forked the conversation above. I don't have an iOS device but happy to help if you get stuck  :). 

 This is such a shameless excuse. You don't need iOS to add a Content-Length header. 

 But we can't know if this is actually causing the issue on iOS