1.前言若有侵权请联系我前两篇文章已经搞定了chrome的ja3,ja4指纹在请求目标时发现在返回头里有akamai的信息必须解决akamai指纹。akamai_hash计算的tcp内容SETTINGSclient_settingsWINDOW_UPDATE(窗口)2. 代码在发送h2协议后直接发送对应的client_settings和windowUpdatachrome的akamai_text如下直接设置就行//1. HTTP/2 客户端前言 tlsOut.write(PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n.getBytes(StandardCharsets.UTF_8));//2. 客户端 SETTINGS sendClientSettings();sendWindowUpdate(tlsOut,0,15663105);// connection window15663105具体实现/** * 设置setting帧 * * throws IOException */ private void sendClientSettings()throws IOException{ByteArrayOutputStream outnew ByteArrayOutputStream();// payload length24out.write(0x00);out.write(0x00);out.write(0x18);out.write(0x04);// SETTINGS out.write(0x00);// flags out.write(new byte[]{0x00, 0x00, 0x00, 0x00});// stream0// SETTINGS_HEADER_TABLE_SIZE(0x01)writeSetting(out, 0x01,65536);// SETTINGS_ENABLE_PUSH(0x02)writeSetting(out, 0x02,0);// SETTINGS_INITIAL_WINDOW_SIZE(0x04)writeSetting(out, 0x04,6291456);// SETTINGS_MAX_HEADER_LIST_SIZE(0x06)writeSetting(out, 0x06,262144);tlsOut.write(out.toByteArray());tlsOut.flush();}private void writeSetting(ByteArrayOutputStream out, int id, int value){out.write((id8)0xFF);out.write(id0xFF);out.write((value24)0xFF);out.write((value16)0xFF);out.write((value8)0xFF);out.write(value0xFF);}/** * 发送窗口 * * param out * param streamId * param increment * throws IOException */ public static void sendWindowUpdate(OutputStream out, int streamId, int increment)throws IOException{byte[]framenew byte[13];// length4frame[0]0;frame[1]0;frame[2]4;frame[3]0x8;// WINDOW_UPDATE frame[4]0;frame[5](byte)((streamId24)0x7F);frame[6](byte)((streamId16)0xFF);frame[7](byte)((streamId8)0xFF);frame[8](byte)(streamId0xFF);frame[9](byte)((increment24)0xFF);frame[10](byte)((increment16)0xFF);frame[11](byte)((increment8)0xFF);frame[12](byte)(increment0xFF);out.write(frame);out.flush();}验证网站链接https://tls.peet.ws/api/all指纹对比左边是java指纹右边是chrome指纹3. notice最开始问chatgpt如何实现akamai_hash涉及版权问题chatgpt拒绝了。在网上查了部分资料后发现不难具体实现提交给chatgpt直接拿代码。