这是我的第一个问题，英语不是我的母语。如果我没有清楚说明，请告诉我。
背景：在IEC104电气通信协议中，当客户端请求一次时，服务器可能会在一个tcp套接字包中以多于一帧的电报响应。所有帧均以“ 68”开头，然后是电报的长度。例如：client：68 14 00 00 00 00 67 01 06 00 01 00 00 00 00 1C 79 BA 0B AE 04 11 //时间同步激活。服务器：68 14 00 00 00 00 67 01 07 00 01 00 00 00 00 1C 79 BA 0B AE 04 11 //时间同步确认，这是预期的响应。但是有时服务器会在时间同步确认之前回复其他电报。例如，下面是来自服务器的群发电报：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啊〜抱歉，这么长时间……。
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
有八个“ 68”，即包括8帧电报。在这种情况下，我有一个问题要从服务器收集电报。如上所述，我不知道电报的帧数和每帧的长度，因此我定义了大数组byte [2048]来包含所有电报，然后将其拆分为11个字符串（新String [11]）。这在大多数情况下都有效，但显然设计不好。
byte[] boTimeSync = HexStrToByte.hexStringToBytes(Setting.TIMESYNC); out.write(boTimeSync); out.flush(); VisibleFrame.updateTextArea(Setting.TIMESYNC.toUpperCase()+"\n"); VisibleFrame.updateTextArea(TimeParsing.parsing(Setting.TIMESYNC.toUpperCase())+"\n"); byte[] biTimeSync = new byte[2048]; bin.read(biTimeSync); str = t104.ByteToStr.byteToStr(biTimeSync); String[] bi = new String[11]; bi = SplitTele.splitTele(str);
那么，由于InputStream.available（）不适合网络编程，如何获取所有帧？
您需要使用DataInputStream：
DataInputStream
int start; do { start = din.read(); } while (start != -1 && start != 0x68); if (start == -1) throw new EOFException(); int length = din.readUnsignedByte(); byte[] message = new byte[length]; din.readFully(message); return message;
除非响应包含某种类型的请求ID，否则无法“响应特定请求查找最后一帧”的解决方案。
