HTTP 300 Multiple Choices vs 425 Too Early
HTTP 300 (Multiple Choices) is a 3xx Redirection response, while 425 (Too Early) is a 4xx Client Error response. 300 indicates that the request has more than one possible response. The client should choose one of them. In contrast, 425 means that the server is unwilling to risk processing a request that might be replayed. Used with TLS 1.3 early data (0-RTT).
Description
The request has more than one possible response. The client should choose one of them.
When You See It
When a resource is available in multiple formats (e.g., different languages or media types).
How to Fix
Select the appropriate resource variant. Send an Accept header with your preferred content type.
Description
The server is unwilling to risk processing a request that might be replayed. Used with TLS 1.3 early data (0-RTT).
When You See It
When a server rejects a request sent as TLS 1.3 early data due to replay risk.
How to Fix
Retry the request after the TLS handshake completes.
Key Differences
300 is a 3xx Redirection response, while 425 is a 4xx Client Error response.
HTTP 300: The request has more than one possible response. The client should choose one of them.
HTTP 425: The server is unwilling to risk processing a request that might be replayed. Used with TLS 1.3 early data (0-RTT).
You encounter 300 when when a resource is available in multiple formats (e.g., different languages or media types).
You encounter 425 when when a server rejects a request sent as TLS 1.3 early data due to replay risk.
When to Use Which
For 300 (Multiple Choices): Select the appropriate resource variant. Send an Accept header with your preferred content type. For 425 (Too Early): Retry the request after the TLS handshake completes.