HTTP 101 Switching Protocols vs 302 Found
HTTP 101 (Switching Protocols) is a 1xx Informational response, while 302 (Found) is a 3xx Redirection response. 101 indicates that the server understands the Upgrade header field request and indicates which protocol it is switching to. In contrast, 302 means that the resource temporarily resides at a different URL. The client should continue using the original URL for future requests.
Описание
The server understands the Upgrade header field request and indicates which protocol it is switching to.
Когда вы это видите
When upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
Как исправить
This is normal behavior during protocol upgrades. Ensure your client supports the target protocol.
Описание
The resource temporarily resides at a different URL. The client should continue using the original URL for future requests.
Когда вы это видите
During A/B testing, temporary maintenance pages, or geo-based redirects.
Как исправить
Follow the Location header. Note: browsers may change POST to GET on redirect.
Ключевые различия
101 is a 1xx Informational response, while 302 is a 3xx Redirection response.
HTTP 101: The server understands the Upgrade header field request and indicates which protocol it is switching to.
HTTP 302: The resource temporarily resides at a different URL. The client should continue using the original URL for future requests.
You encounter 101 when when upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
You encounter 302 when during A/B testing, temporary maintenance pages, or geo-based redirects.
Когда что использовать
For 101 (Switching Protocols): This is normal behavior during protocol upgrades. Ensure your client supports the target protocol. For 302 (Found): Follow the Location header. Note: browsers may change POST to GET on redirect.