Prevent the unwanted 100 Continue behavior in Ajax requests

My Javascript application sends out large POST requests to a backend server. Due to the fact that we need all requests directed to our non-public endpoint and the load balancer/proxies struggle with the Expect: 100-Continue header, I am seeking a way to prevent the browser clients from including this header.

Is it possible to use jQuery or the raw xmlHttpRequest object to command the browser to simply send the entire request body in every POST?

Answer №1

Assuming I am understanding your question correctly and you are utilizing jquery $.ajax to send a request, it should be possible to set headers in the following manner:

$.ajax({
   url: 'your_url',
   type: 'post',
   data: your_big_data,
   headers:{
      'Expect': ''
   }
});

I must admit that I have not yet had the opportunity to experiment with this specific scenario in javascript, but similar approaches have proven successful in other instances. Please let me know if this solution resolves your issue.

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