[FEATURE REQ] Encode invalid URL character, even when encoded=true on PathParam or QueryParam

[weidongxu-microsoft]

Is your feature request related to a problem? Please describe.

@PathParam(value = "<>", encoded = true) or @QueryParam(value = "<>", encoded = true).

If customer sends some value that containsinvalid character (e.g. "foo bar" which contains a space), the URL sent would include the space, e.g.

"HTTP request","method":"GET","url":"https://localhost:3000/contoso/v1/contoso/foo bar"

(I tested on Netty and OkHttp client)

This would be an invalid URL.

Describe the solution you'd like azure-core keeps the reserve character like / or %, but still percent-encoding the character that would be invalid in URL.

We need some investigation about what character is invalid in URL.

Some discussion here https://github.com/Azure/cadl-ranch/pull/673#discussion_r1715262451

Reply from Python, the percent-encoding happens in their underlying http client.

Describe alternatives you've considered Codegen may do the escaping. But it would be more consistent if in azure-core

Additional context Add any other context or screenshots about the feature request here.

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