TCP Header Option Calculation Issue

[hunianhang]

Problem Description:

In the "rx_engine.cpp" file, the "parse_optional_header_fields" function has an issue with the calculation of the TCP option (option) length. The TCP option length is calculated in bytes using the Data Offset, which represents the TCP header length in 4-byte units. However, in the "rx_engine.cpp" file (line 477 to line 554), the dataOffsetIn passed to the "parse_optional_header_fields" function does not multiply 4 in the calculations.

Bug Fix:

When parsing TCP options in the parse_optional_header_fields function, the Data Offset should first be multiplied by 4.