ModbusTcpMessageGetContentLengthByHeadBytes 方法 |
从当前的头子节文件中提取出接下来需要接收的数据长度
Extract the length of the data to be received from the current header file
Extract the length of the data to be received from the current header file
命名空间： HslCommunication.Core.IMessage
程序集： HslCommunication (在 HslCommunication.dll 中) 版本：12.1.2.0 (12.1.2.0)
语法备注
如果剩余字节的长度小于0，则表示消息头数据还没有接收完整，还需要接收一定的长度(返回值的绝对值)，然后再判断剩余字节长度是否小于0，直到结果大于等于0为止，最多判断的次数为16次，超过16次将返回失败
If the length of the remaining bytes is less than 0, it means that the message header data has not been received completely, and a certain length (absolute value of the return value) needs to be received, and then it is judged whether the length of the remaining bytes is less than 0 until the result is greater than or equal to 0, the maximum number of judgments is 16, more than 16 times will return failure
If the length of the remaining bytes is less than 0, it means that the message header data has not been received completely, and a certain length (absolute value of the return value) needs to be received, and then it is judged whether the length of the remaining bytes is less than 0 until the result is greater than or equal to 0, the maximum number of judgments is 16, more than 16 times will return failure
参见