On Nov 20, 2014, at 8:07 AM, 徐鸿 <icehong@xxxxxxxxx> wrote:
> Is it possible to get accurate nanosecond info for lua script ? For the same packet , I got pinfo.abs_ts == 1416493696.7953 in lua script , but in main window the time show as "1416493696.795345000", is it possible to got the accurate nanosecond in lua ?
1416493696.795345000 is either, by happenstance, an exact multiple of 1000 nanoseconds, i.e. 1 microsecond, or has only microsecond precision. Most time stamping in the capture mechanisms used by Wireshark has microsecond precision, not nanosecond precision.
The Wireshark code in
> my wireshark version is Version 1.12.2 (v1.12.2-0-g898fa22 from master-1.12) Running on 64-bit Windows 7 Service Pack 1, build 7601
1.12.2 that gets the time appears to do a floating-point calculation that *should* provide the full resolution. If the Lua in the Windows version is built with lua_Number being a double, which I think is the default, that *should* be sufficient to hold a value of 1416493696.795345 with full precision.
How are you displaying the value in your Lua script? Perhaps it's getting the time stamp with full precision but, for some reason, it's not displaying it with full precision?
