如何在Android中设置http响应的最大等待时间？

Question

我使用Android推荐的Cronet库来发出HTTP请求，但是我找不到关于如何实现某些特性的信息。例如，我需要为所有HTTP请求设置最大等待时间。换句话说，如果HTTP请求花费的时间超过'X‘秒，那么它应该被视为失败的请求。我如何在Cronet中配置这个？

我的代码：

fun initCronet() { // this is called only once
    executor = Executors.newSingleThreadExecutor()
    engine = CronetEngine.Builder(context) 
        .enableHttp2(true)
        .build()
}

suspend fun myFunction() {
    suspendCoroutine<HttpResponseContainer> {
        val callback = CoroutinesNetworkCallback(it)
        val url = "http://myhost.com/my-endpoint"

        engine.newUrlRequestBuilder(url, callback, executor)
            .addHeader("Content-Type", "application/json; charset=UTF-8")
            .build().start()
    }
}

回调看起来大约如下所示：

class CoroutinesNetworkCallback (
  private val continuation: Continuation<HttpResponseContainer>,
) : UrlRequest.Callback() {

  override fun onRedirectReceived(request: UrlRequest, info: UrlResponseInfo, newUrl: String) {
      request.cancel()
  }

  override fun onResponseStarted(request: UrlRequest, info: UrlResponseInfo) {
      // init buffer
  }

  override fun onReadCompleted(request: UrlRequest, info: UrlResponseInfo, buffer: ByteBuffer) {
      // retrieve response
  }

  override fun onFailed(request: UrlRequest, info: UrlResponseInfo, error: CronetException) {
      continuation.resumeWithException(RuntimeException("request failed"))
  }

  override fun onSucceeded(request: UrlRequest, info: UrlResponseInfo) {
      continuation.resume(HttpResponseContainer(httpStatusCode))
  }
}

Answer 1

您可以在构建器中添加connectTimeout、writeTimeout和readTimeout

connectTimeout :尝试连接主机地址writeTimeout和readTimeout的最大时间:发送请求和接收响应的最大时间