HTTP 101 Switching Protocols vs 526 Invalid SSL Certificate
HTTP 101 (Switching Protocols) is a 1xx Informational response, while 526 (Invalid SSL Certificate) is a 5xx Server Error response. 101 indicates that the server understands the Upgrade header field request and indicates which protocol it is switching to. In contrast, 526 means that cloudflare-specific. The origin's SSL certificate could not be validated.
Descrição
The server understands the Upgrade header field request and indicates which protocol it is switching to.
Quando você o vê
When upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
Como corrigir
This is normal behavior during protocol upgrades. Ensure your client supports the target protocol.
Descrição
Cloudflare-specific. The origin's SSL certificate could not be validated.
Quando você o vê
When using Cloudflare Full (Strict) mode with an invalid origin certificate.
Como corrigir
Install a valid SSL certificate on the origin, or use Cloudflare Origin CA certificate.
Diferenças principais
101 is a 1xx Informational response, while 526 is a 5xx Server Error response.
HTTP 101: The server understands the Upgrade header field request and indicates which protocol it is switching to.
HTTP 526: Cloudflare-specific. The origin's SSL certificate could not be validated.
You encounter 101 when when upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
You encounter 526 when when using Cloudflare Full (Strict) mode with an invalid origin certificate.
Quando usar qual
For 101 (Switching Protocols): This is normal behavior during protocol upgrades. Ensure your client supports the target protocol. For 526 (Invalid SSL Certificate): Install a valid SSL certificate on the origin, or use Cloudflare Origin CA certificate.