Hello I need to read content copy of ByteReadChannel of resp

Question

Hello I need to read content copy of ByteReadChannel of response inside implementation of HttpSendInterceptor But I didn t find solution that works I tried this val contentCopy = ByteChannel apply response content copyTo this val jsonString = String contentCopy readRemaining readBytes Do you know any working solution Thanks

Aleksei Tirman [JB] · Answer

Could you please describe the problem that you re trying to solve

Lubomir Pisk · Answer

I have RefreshTokenInterceptor and inside is this check 2FA too returns response code 401 if twoFactorRepository isTwoFactor call response return and dont refresh token return call else refresh token And this is implementation of isTwoFactor val apiResponse ApiResponse = try because content can be read only once val contentCopy = ByteChannel apply response content copyTo this val jsonString = String contentCopy readRemaining readBytes json decodeFromString jsonString catch e Exception null return apiResponse errorCode equals ApiResponse TWO FACTOR ERROR true == true Is it clear

Aleksei Tirman [JB] · Answer

Could you please explain what is the `RefreshTokenInterceptor`

Lubomir Pisk · Answer

Its implementation of HttpSendInterceptor

Lubomir Pisk · Answer

class RefreshTokenInterceptor private val twoFactorRepository TwoFactoryRepository HttpSendInterceptor override suspend fun invoke sender Sender request HttpRequestBuilder HttpClientCall val call = sender execute request if call response status value == 401 2FA too returns response code 401 if twoFactorRepository isTwoFactor call response return and dont refresh token return call else refresh token class TwoFactorRepository fun isTwoFactory reponse HttpResponse Boolean val apiResponse ApiResponse = try because content can be read only once val contentCopy = ByteChannel apply response content copyTo this val jsonString = String contentCopy readRemaining readBytes json decodeFromString jsonString catch e Exception null return apiResponse errorCode equals ApiResponse TWO FACTOR ERROR true == true

Lubomir Pisk · Answer

Is it clear

Aleksei Tirman [JB] · Answer

You can read a response body into a byte array and use it as a source for `ByteReadChannel` so the other parts of your application could read the body once more ```val client = HttpClient CIO client plugin HttpSend intercept request gt val call = execute request val body = call response content val bytes = body readRemaining readBytes Manipulate bytes here HttpClientCall client request build HttpResponseData statusCode = call response status requestTime = call response requestTime headers = call response headers version = call response version body = ByteReadChannel bytes callContext = call response coroutineContext val r = client get <https httpbin org get> println r bodyAsText ```