HTTP 200 OK vs 411 Length Required

HTTP 200 (OK) is a 2xx Success response, while 411 (Length Required) is a 4xx Client Error response. 200 indicates that the request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only. In contrast, 411 means that the server refuses to accept the request without a Content-Length header.

200 OK

HTTP

Description

The request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only.

When You See It

The most common HTTP response — indicates the request was processed successfully.

How to Fix

No fix needed. The request succeeded as expected.

411 Length Required

HTTP

Description

The server refuses to accept the request without a Content-Length header.

When You See It

When sending a request body without specifying Content-Length.

How to Fix

Include a Content-Length header in your request.

Key Differences

1.

200 is a 2xx Success response, while 411 is a 4xx Client Error response.

2.

HTTP 200: The request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only.

3.

HTTP 411: The server refuses to accept the request without a Content-Length header.

4.

You encounter 200 when the most common HTTP response — indicates the request was processed successfully.

5.

You encounter 411 when when sending a request body without specifying Content-Length.

When to Use Which

For 200 (OK): No fix needed. The request succeeded as expected. For 411 (Length Required): Include a Content-Length header in your request.

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200 OK HTTP 411 Length Required HTTP