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From: | Muhamad Ikhwan Ismail |
Subject: | RE: [lwip-users] Strange ghost segments |
Date: | Mon, 14 Jul 2008 09:43:28 +0000 |
When u say ghost data, did Wireshark tag those packets as Ethernet -II or Ethernet Type II packets or something like that ? I used to have the problem at start 1.3.0 and it was because in 1.2.0 the TCP data are mostly single chain element packets, and UDP are normally a chain of 2 (the header and the payload) and my driver did exactly that. In 1.3.0 as I discovered the TCP data can be chains of multiple pbufs now, so most probably your driver sent a single chained packets, and the rest are seen as garbage (the ones in the next chains). Try fixing the driver as mine was definitely a problem with the driver. > Subject: Re: [lwip-users] Strange ghost segments > From: address@hidden > To: address@hidden > Date: Mon, 14 Jul 2008 09:17:57 +0100 > > On Mon, 2008-07-14 at 09:53 +0200, address@hidden wrote: > > > > Hello, > > > > I'm currently using lwip 1.2.0, which does work (well, I do have a > > problem, > > but I'll open another thread for that). Now I tried upgrading to > > 1.3.0 > > (for auto-IP support). Basically, it works, but when sending TCP data, > > sometimes a bunch of garbage data is inserted. When I look at it with > > Wireshark, I see an additional TCP segment that contains 125 bytes of > > garbage data. Afterwards, the stream continues normally. When running > > the > > same test app several times, this sometimes happens and sometimes > > doesn't. > > I'm using the socket interface. This only happens with 1.3.0. I don't > > really know how to go on to find out where this comes from. Maybe > > someone > > could give me a hint? > > Can you give more details about which port of lwIP you're using and what > driver? > > Thanks > > Kieran > > > > _______________________________________________ > lwip-users mailing list > address@hidden > http://lists.nongnu.org/mailman/listinfo/lwip-users Need to know now? Get instant answers with Windows Live Messenger. IM on your terms. |
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