HTTP 414 URI Too Long vs 417 Expectation Failed
Both HTTP 414 (URI Too Long) and 417 (Expectation Failed) belong to the 4xx Client Error category. 414 indicates that the URI provided was too long for the server to process. Meanwhile, 417 means that the server cannot meet the requirements of the Expect header.
Description
The URI provided was too long for the server to process.
When You See It
When query strings are extremely long or when accidentally sending a request body in the URL.
How to Fix
Shorten the URL. Move long parameters to the request body using POST instead of GET.
Description
The server cannot meet the requirements of the Expect header.
When You See It
When the server doesn't support Expect: 100-continue.
How to Fix
Remove the Expect header from your request.
Key Differences
HTTP 414: The URI provided was too long for the server to process.
HTTP 417: The server cannot meet the requirements of the Expect header.
You encounter 414 when when query strings are extremely long or when accidentally sending a request body in the URL.
You encounter 417 when when the server doesn't support Expect: 100-continue.
When to Use Which
For 414 (URI Too Long): Shorten the URL. Move long parameters to the request body using POST instead of GET. For 417 (Expectation Failed): Remove the Expect header from your request.