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https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5201

           Summary: Lua: Trying to use Field.new("tcp.segments") to get
                    reassembled TCP data is failed
           Product: Wireshark
           Version: 1.2.7
          Platform: Other
        OS/Version: Windows XP
            Status: NEW
          Severity: Major
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: qiangxiong.huang@xxxxxxxxx


Build Information:
Version 1.2.7 (SVN Rev 32341)
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Trying to use Field.new("tcp.segments") to get reassembled TCP data is failed. 

Try xxx.value or xxx() get nil.   I checked the source code, and find the
reason is :

In packet-tcp.c, it set "tcp.segments" field to FT_NONE type;

Then in wslua_field.c, FT_NONE is converted to lua as nil.

My suggestion is to modify wslua_field.c->FieldInfo__call, to convert all
FT_NONE to lua ByteArray just like FT_PROTOCOL that has been converted to
ByteArray in 1.3.4.

Another bug about Field.new("tcp.segments") is xxx.range got "expired tvb"
error too in reassembled tcp packet.

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