POST Request With Content-Length Header

When making a POST request, HTTP clients typically automatically add a Content-Length header based on the size of the data supplied and a Content-Type header based on the type of data being transferred. To manually pass the Content-Length header, you need to add the Content-Length: [length] and Content-Type: [mime type] headers to your request, which describe the size and type of data in the body of the POST request. In this POST request with a Content-Length Header Example, we make a POST request to the ReqBin echo URL and send the JSON data to the server. Click Send to make a POST request with Content-Length Header online and see the results.
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