Retrofit: Invalid Malformed URL

[nathancassano]

The path of a URL contains a colon symbol which is causing the call to fail.

Using version com.squareup.retrofit2:retrofit:2.5.0

Code:

public interface ClientApi {
    @PUT("user:email={email}/login")
    Call<ResponseBody> login(@Path("email") String email, @Body String pass);

    @PUT("./user:email={email}/login")
    Call<ResponseBody> loginRelative(@Path("email") String email, @Body String pass);
...

Regular path
Stack trace:

Caused by: java.lang.IllegalArgumentException: Malformed URL. Base: https://test.com/restapi/, Relative: user:[email protected]/login
        at retrofit2.RequestBuilder.get(RequestBuilder.java:221)
        at retrofit2.RequestFactory.create(RequestFactory.java:111)
        at retrofit2.OkHttpCall.createRawCall(OkHttpCall.java:190)
        at retrofit2.OkHttpCall.execute(OkHttpCall.java:173)
        at Service.login(Service.java:38)

Think the code needs to treat the relative portion of the URL like an absolute URL when parsing.

Relative path
Using a retaliative path annotation ./ does not solve this issue.
Stack trace:

Caused by: java.lang.IllegalArgumentException: @Path parameters shouldn't perform path traversal ('.' or '..'):
        at retrofit2.RequestBuilder.addPathParam(RequestBuilder.java:113)
        at retrofit2.ParameterHandler$Path.apply(ParameterHandler.java:99)
        at retrofit2.RequestFactory.create(RequestFactory.java:108)
        at retrofit2.OkHttpCall.createRawCall(OkHttpCall.java:190)
        at retrofit2.OkHttpCall.execute(OkHttpCall.java:173)

Bug report unit test
https://gist.github.com/nathancassano/f675e2fd1c64d4b6002afea37bf5fee4

[JakeWharton]

Yeah this should be allowed.

cc @swankjesse

[sangeetha5491]

can I work on this issue?

[swankjesse]

No, we need to study to learn what the correct behavior is.

[thezukkino]

Is there any news about this issue? This problem causes a version lock to 2.4.0.