Client doesn't throw for HTTP Errors when `Any` is the expected result.

[ScottPierce]

Ktor Version

1.2.2

Ktor Engine Used(client or server and name)

Client w/ OkHTTP Engine on Android

JVM Version, Operating System and Relevant Context

IntelliJ IDEA 2019.1.3 (Ultimate Edition)
Build #IU-191.7479.19, built on May 28, 2019
JRE: 1.8.0_202-release-1483-b58 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
macOS 10.14.5

Feedback

    val result: Any = httpClient.post {
      url(server.baseApiUrl + "/apiPath")
      body = request
      contentType(ContentType.Application.Json)
    }

With the above code, we found that our app doesn't throw http exceptions, which was a bit unexpected, and took a bit of debugging. result ends up being a DelegatedResponse, and is thus expecting us to handle the http value ourselves, which was again, unexpected.

This code was something we didn't care about the response, and so someone who didn't know what they were doing defaulted it to type Any.

Instead of unexpectedly returning a DelegatedResponse object, and expecting the caller to handle the error handling, it'd probably be better to throw a RuntimeException mentioning this isn't an allowed response type, so that unexpected bugs like this don't happen.

[e5l]

Hi, @ScottPierce, thanks for the report. Probably we should prevent to use Any as the receive type.

[ScottPierce]

@e5l I agree

[oleg-larshin]

Please check the following ticket on YouTrack for follow-ups to this issue. GitHub issues will be closed in the coming weeks.