Android 使用okhttp监控网络数据

这里使用Okhttp写了一个demo来监听网络请求过程中的一系列数据，包括当前网络类型、请求体、响应体大小，url，请求方式，当然还有本次核心获取域名解析时长，建立连接时长，保持连接时长，请求总时长这些数据。

一次网络请求经历了哪些过程

通过域名访问的方式来请求网络时，会经历下列过程：
1.DNS解析：通过域名服务器或者本地host将域名解析成ip地址
2.建立连接：三次握手
3.发送数据：通过GET/POST/PUT等方式将数据(header和body)发送给服务器，
4.接受数据：接受服务器返回数据：响应头和body
5.断开链接：四次挥手断开链接

OkHttp库实现了哪些网络请求过程的状态回调
OkhttpClient的Builder类可以调用eventListener设置EventListener，EventListener会进行回调如上图的各个事件节点。

所有方法为：

public abstract class EventListener {    public void callStart(Call call) {}    // 域名解析    public void dnsStart(Call call, String domainName) {}    public void dnsEnd(Call call, String domainName, List<InetAddress> inetAddressList) {}    // 开始连接    public void connectStart(call, route.socketAddress(), proxy){}    // 释放当前Transmitter的RealConnection    public void connectionReleased(Call call, Connection connection) {}    public void connectionAcquired(call, result){};    // 请求    public void requestHeadersStart(@NotNull Call call){}    public void requestHeadersEnd(@NotNull Call call, @NotNull Request request) {}    // 响应    public void requestBodyStart(@NotNull Call call) {}    public void requestBodyEnd(@NotNull Call call, long byteCount) {}    // 结束    public void callEnd(Call call) {}    // 失败    public void callFailed(Call call, IOException ioe) {}}

流程解释：

callStart：一次请求开始了
2.dns：dns解析过程
3.connectStart: 开始建立连接了
4.secureConnect: 开始建立TSL安全链接
5.connectEnd: 链接建立结束：可能建立失败，失败后可以重试
6.requestHeaders：发送请求头
7.requestBody：发送请求body
8.responseHeaders：客户端接受响应头
9.responseBody:客户端接受响应body
10.connectionReleased:链接释放
11.callEnd:一次请求结束

添加日志拦截器获取请求体、响应体大小和响应内容：

class LoggingInterceptor : Interceptor {    private val byteCount = 1024 * 1024    @Throws(IOException::class)    override fun intercept(chain: Interceptor.Chain): Response {        //chain里面包含了request和response，按需获取        val request = chain.request()        val response = chain.proceed(request)        Log.v(HTTP, "(请求地址): ${request.url()}")        Log.v(HTTP, "请求方式: ${request.method()}")        if (request.body() == null) {            Log.v(HTTP, "(请求体大小): 0")        } else {            val requestBody = request.body()            Log.v(HTTP, "(请求体大小): ${requestBody?.contentLength()}")        }        val responseBody = response.peekBody(byteCount.toLong())        Log.v(HTTP, "(响应体大小): ${responseBody.contentLength()}")        Log.v(HTTP, "响应内容: ${responseBody.string()}")        return response    }}

自定义EventListener获取各个数据：

import android.util.Logimport com.apus.networkmonitor.constants.Tagsimport okhttp3.*import java.io.IOExceptionimport java.net.InetAddressimport java.net.InetSocketAddressimport java.net.Proxyimport java.util.concurrent.TimeUnitopen class CustomOkEventListener: EventListener() {    private var dnsStart: Long = 0 //dns开始解析时间    private var connectStart: Long = 0  //开始连接时间    private var callStart: Long = 0  //开始请求时间    private var connectAquire: Long = 0  //连接获取时间    override fun callStart(call: Call) {        Log.v(Tags.CALL, "callStart")        callStart = System.nanoTime()    }    override fun dnsStart(call: Call, domainName: String) {        Log.v(Tags.CALL, "dnsStart")        dnsStart = System.nanoTime()    }    override fun dnsEnd(call: Call, domainName: String, inetAddressList: MutableList<InetAddress>) {        Log.v(Tags.CALL, "dnsEnd")        var dnsEnd = System.nanoTime()        var duration = TimeUnit.NANOSECONDS.toMillis(dnsEnd - dnsStart)        Log.v(Tags.HTTP, "(域名解析时长): $duration ms")    }    override fun connectStart(call: Call, inetSocketAddress: InetSocketAddress, proxy: Proxy) {        Log.v(Tags.CALL, "connectStart")        connectStart = System.nanoTime()    }    override fun connectEnd(        call: Call,        inetSocketAddress: InetSocketAddress,        proxy: Proxy,        protocol: Protocol?    ) {        Log.v(Tags.CALL, "connectEnd")        connectAquire = System.nanoTime()        var duration = TimeUnit.NANOSECONDS.toMillis(connectAquire - connectStart)        Log.v(Tags.HTTP, "(建连时长): $duration ms")    }    override fun connectionAcquired(call: Call, connection: Connection) {        Log.v(Tags.CALL, "connectionAcquired")    }    override fun connectionReleased(call: Call, connection: Connection) {        Log.v(Tags.CALL, "connectionReleased")        var connectReleased = System.nanoTime()        var duration = TimeUnit.NANOSECONDS.toMillis(connectReleased - connectAquire)        Log.v(Tags.HTTP, "(连接保持时长): $duration ms")    }    override fun callEnd(call: Call) {        Log.v(Tags.CALL, "callEnd")        var callEnd = System.nanoTime()        var duration = TimeUnit.NANOSECONDS.toMillis(callEnd - callStart)        Log.v(Tags.HTTP, "(请求总时长): $duration ms")    }    override fun callFailed(call: Call, ioe: IOException) {        Log.v(Tags.CALL, "callFailed")        var callEnd = System.nanoTime()        var duration = TimeUnit.NANOSECONDS.toMillis(callEnd - callStart)        Log.v(Tags.HTTP, "(请求总时长): $duration ms")    }}

时间的计算用的是System.nanoTime()，返回正在运行的Java虚拟机的高分辨率时间源的当前值，单位为纳秒。

最后，将CustomOkEventListener设置给okhttpClient：

val builder = OkHttpClient.Builder()                .retryOnConnectionFailure(true) //失败重连                .addInterceptor(LoggingInterceptor()) //日志拦截器                .eventListener(CustomOkEventListener()) //统计请求链路各时长                builder.build()

Dns解析时长或者自定义Dns，然后设置给okhttpclient:

class CustomDns: Dns {    override fun lookup(hostname: String?): MutableList<InetAddress> {        var start = System.nanoTime()  //返回正在运行的Java虚拟机的当前值，高分辨率时间源，单位为纳秒        val lookup = Dns.SYSTEM.lookup(hostname)  //操作系统查找域名        var end = System.nanoTime()        var duration = TimeUnit.NANOSECONDS.toMillis(end - start)        Log.v(Tags.HTTP, "dns_time_l(域名解析时长): $duration " + "ms")        return lookup    }}

打印统计结果：

来源地址：https://blog.csdn.net/qq_24252589/article/details/131343405