call a suspend function inside a normal function

Question

I want to call blocking a suspend function in a normal function, but does not block Thread to finishing suspend function and then return Response

override fun intercept(chain: Interceptor.Chain): Response {

    // getSession is a suspend function
    val session = sessionProvider.getSession()

    return chain.proceed(
        chain
            .request()
            .newBuilder()
            .addHeader("Authorization", "${session.token}")
            .build()
    )
}

Answer 1

This looks like you are implementing an OkHttp interceptor, so I am hoping that intercept() is being called on a background thread.

If so, use runBlocking():

override fun intercept(chain: Interceptor.Chain): Response {

    // getSession is a suspend function
    val session = runBlocking { sessionProvider.getSession() }

    return chain.proceed(
        chain
            .request()
            .newBuilder()
            .addHeader("Authorization", "${session.token}")
            .build()
    )
}

runBlocking() will execute the suspend function, blocking the current thread until that work is complete.