read failed, socket might closed or timeout, read ret: -1这个问题的原因有很多种可能。一、如果设备1没开启接收服务，设备2连接它理所当然会连接失败，此时当设备1开启服务，设备2再连接也可能会失败，http://stackoverflow.com/questions/18657427/ioexception-read-failed-

注：本文根据okhttp-3.2.0源码分析。在OkHttpClient的创建中，有以下代码private OkHttpClient(OkHttpClient.Builder builder) {this.dispatcher = builder.dispatcher;this.proxy = builder.proxy;this.protocols = builder.protocols;thi