如何在 CRONET 中使用协同程序，以便我的代码可以像同步一样编写？

问题描述

虽然有很多使用 Kotlin 协程和网络库 Retrofit 的 Android 代码示例，但没有一个例子说明 cronet 与协程的具体组合。

协程会支持cronet吗？

发布方法示例：

val myBuilder = cronetEngine.Builder(context)
// Enable caching of HTTP data and
// other information like QUIC server information,HTTP/2 protocol and QUIC protocol.
val cronetEngine: cronetEngine = myBuilder
    .enableHttpCache(cronetEngine.Builder.HTTP_CACHE_IN_MEMORY,100 * 1024.toLong())
    .enableHttp2(true)
    .enableQuic(true)
    .build()
val executor: Executor = Executors.newSingleThreadExecutor()
val requestBuilder = cronetEngine.newUrlRequestBuilder(
    "FULL-URL",MyUrlRequestCallback(),executor
)
// Content-Type is required,removing it will cause Exception
requestBuilder.addHeader("Content-Type","application/json; charset=UTF-8")
requestBuilder.setHttpMethod("POST")
val myUploadDataProvider = MyUploadDataProvider()
requestBuilder.setUploadDataProvider(myUploadDataProvider,executor)
val request: UrlRequest = requestBuilder.build()
request.start()

MyUploadDataProvider 类：

import android.util.Log
import org.chromium.net.UploadDataProvider
import org.chromium.net.UploadDataSink
import java.lang.Exception
import java.nio.ByteBuffer
import java.nio.charset.StandardCharsets

private const val TAG = "MyUploadDataProvider"
//Todo replace username and passowrd "_user & _pass"
var string: String ="{\"username\":\"_user\",\"password\":\"_pass\"}"
val charset = StandardCharsets.UTF_8

class MyUploadDataProvider() : UploadDataProvider() {

    override fun getLength(): Long {
    val size:Long = string.length.toLong()
    Log.e(TAG,"Length = "+size)
    return size
    }

    override fun rewind(uploadDataSink: UploadDataSink?) {
    Log.e(TAG,"REWIND IS CALLED")
    uploadDataSink!!.onRewindSucceeded()
    }

    override fun read(uploadDataSink: UploadDataSink?,byteBuffer: ByteBuffer?) {
    Log.e(TAG,"READ IS CALLED")
    byteBuffer!!.put(string.toByteArray(charset))
    //byteBuffer.rewind()
    //For chunked uploads,true if this is the final read. It must be false for non-chunked uploads.
    uploadDataSink!!.onReadSucceeded(false)
    }

}

解决方法

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