Changing a default request header for HttpClient

Question

A bit related to my previous question I have the following:

public static HttpClient client= new HttpClient();
//Basic HTTP client setup
  client.BaseAddress = new Uri(address);
  client.DefaultRequestHeaders.Add("custom_header", "MyCustomHeader");

As you can see I set a base address (the matter of the previous question) that I can not change, and I set a custom header.

My question is can I change later in code this custom header (temporarily or permanently)?

For example I want my requests have the header "MyCustomHeader" but for some particular request, I want it to be "MyOtherHeader".

Is this possible, and if it is, how can I do it?

what have you tried so fat? ie show us your attempts – jazb Oct 15 '18 at 06:49 — jazb, Oct 15 '18 at 06:49

score 8 · Accepted Answer · answered Oct 15 '18 at 06:58

8

As I understand, you want to add/remove this custom header on runtime.

You can add custom header like code below,

client.DefaultRequestHeaders.Add("custom_header", "MyCustomHeader");

And, you can remove header when you want with code below

client.DefaultRequestHeaders.Remove("custom_header");

answered Oct 15 '18 at 06:58

Onur Tekir

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Thanks! So if I want to just *change* , should I remove and add another value? – KansaiRobot Oct 15 '18 at 06:59
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RequestHeader is KeyValuePair and KeyValuePair Value property is read only. So you should remove and add again with another value. – Onur Tekir Oct 15 '18 at 08:34
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This of course will affect the default header permanently, is that right? (Until changed back I mean) – KansaiRobot Oct 16 '18 at 02:54

Changing a default request header for HttpClient

1 Answers1