HTTP 101 Switching Protocols vs 402 Payment Required
HTTP 101 (Switching Protocols) is a 1xx Informational response, while 402 (Payment Required) is a 4xx Client Error response. 101 indicates that the server understands the Upgrade header field request and indicates which protocol it is switching to. In contrast, 402 means that reserved for future use. Originally intended for digital payment systems, some APIs use it to indicate a billing or subscription issue.
描述
The server understands the Upgrade header field request and indicates which protocol it is switching to.
何时出现
When upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
如何修复
This is normal behavior during protocol upgrades. Ensure your client supports the target protocol.
描述
Reserved for future use. Originally intended for digital payment systems, some APIs use it to indicate a billing or subscription issue.
何时出现
On some APIs when a subscription has expired or payment is needed.
如何修复
Check your billing status, update payment method, or upgrade your subscription.
主要区别
101 is a 1xx Informational response, while 402 is a 4xx Client Error response.
HTTP 101: The server understands the Upgrade header field request and indicates which protocol it is switching to.
HTTP 402: Reserved for future use. Originally intended for digital payment systems, some APIs use it to indicate a billing or subscription issue.
You encounter 101 when when upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
You encounter 402 when on some APIs when a subscription has expired or payment is needed.
何时使用哪个
For 101 (Switching Protocols): This is normal behavior during protocol upgrades. Ensure your client supports the target protocol. For 402 (Payment Required): Check your billing status, update payment method, or upgrade your subscription.