HTTP 101 Switching Protocols vs 205 Reset Content
HTTP 101 (Switching Protocols) is a 1xx Informational response, while 205 (Reset Content) is a 2xx Success response. 101 indicates that the server understands the Upgrade header field request and indicates which protocol it is switching to. In contrast, 205 means that the server fulfilled the request and the client should reset the document view (e.g., clear a form).
Description
The server understands the Upgrade header field request and indicates which protocol it is switching to.
When You See It
When upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
How to Fix
This is normal behavior during protocol upgrades. Ensure your client supports the target protocol.
Description
The server fulfilled the request and the client should reset the document view (e.g., clear a form).
When You See It
After form submissions where the server wants the client to reset the form for new input.
How to Fix
The client should clear the form or reset the view. Rarely used in practice.
Key Differences
101 is a 1xx Informational response, while 205 is a 2xx Success response.
HTTP 101: The server understands the Upgrade header field request and indicates which protocol it is switching to.
HTTP 205: The server fulfilled the request and the client should reset the document view (e.g., clear a form).
You encounter 101 when when upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
You encounter 205 when after form submissions where the server wants the client to reset the form for new input.
When to Use Which
For 101 (Switching Protocols): This is normal behavior during protocol upgrades. Ensure your client supports the target protocol. For 205 (Reset Content): The client should clear the form or reset the view. Rarely used in practice.