What is the mandatory information a HTTP Request Header must contain?

Question

What is the mandatory information a HTTP Request Header must contain ?

score 48 · Answer 1 · edited Nov 19 '12 at 03:22

48

GET / HTTP/1.0 is a legal HTTP request.

If there's no Host header field, you may not get the results you were hoping for if the destination server is a virtual host that doesn't have its own IP address to distinguish itself from other virtual hosts.

HTTP 1.1 requires the Host field.

edited Nov 19 '12 at 03:22

Alois Mahdal

293

answered Jul 24 '10 at 07:49

gbroiles

1,424

score 1 · Answer 2 · edited Oct 07 '21 at 06:58

1

None of the HTTP Headers are required in an HTTP/1.0 Request. There are no required Response headers either.

All that and more in HTTP 1.1 - RFC 2616

edited Oct 07 '21 at 06:58

Community

1

answered Jul 23 '10 at 17:52

Chris S

78,455

What is the mandatory information a HTTP Request Header must contain?

2 Answers2