Messages in this thread | | | From | "Charlie (Zhanglei) Wang" <> | Subject | Re: udp packet loss even with large socket buffer | Date | Mon, 1 Mar 2004 21:12:04 -0500 |
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hi,
Thanks for your reply. If you want to exactly reproduce my problem, please use the following commands to download my codes from cvs:
cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/gaim-vv login cvs -z3 -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/gaim-vv co linphone
Simply hit enter when prompted for passwd. (1) Please download and install libosip before compiling. (2) Before ./configure, please run command 'rm -Rf ffmpeg; ln -s ffmpeg-0.4.8 ffmpeg'. (3) After 'make' and 'make install', use 'linphonec' to run the program. (4) Under linphonec, use the following commands to communicate with windows messenger: r www-db.research.bell-labs.com c <sip:username_of_windows_messenger@www-db.research.bell-labs.com>
www-db.research.bell-labs.com is a public sip server.
Under Windows Messenger (which runs only under WinXP), use SIP login method. Sign-in name should be username_of_windows_messenger@www-db.research.bell-labs.com
Please note that Windows Messenger is different from MSN Messenger.
I know it's kind of complicated... :( Thank you in advance! PS: My Linux box and Windows XP box run in the same LAN.
Johnny
----- Original Message ----- From: "Denis Vlasenko" <vda@port.imtp.ilyichevsk.odessa.ua> To: "johnny zhao" <filamoon2@hotmail.com>; <linux-kernel@vger.kernel.org> Sent: Saturday, February 28, 2004 4:22 PM Subject: Re: udp packet loss even with large socket buffer
> On Saturday 28 February 2004 03:09, johnny zhao wrote: > > Hi, > > > > I have a problem when trying to receive udp packets containing video data > > sent by Microsoft Windows Messenger. Here is a detailed description: > > > > Linux box: > > Linux-2.4.21-0.13mdksmp, P4 2.6G HT > > socket mode: > > blocked mode > > code used: > > while ( recvfrom(...) ) > > socket buffer size: > > 8388608, set by using sysctl -w net.core.rmem_default and rmem_max > > > > I used ethereal(using libpcap) to monitor the network traffic. All the > > packets were transferred and captured by libpcap. But my program constantly > > suffers from packet loss. According to ethereal, the average time interval > > between 2 packets is 70-80ms, and the minimum interval can go down to > > ~1ms. Each packet is smaller than 1500 bytes (ethernet MTU). > > > > Can anybody help me? I googled and found a similar case that had been > > solved by increasing the socket buffer size. But it doesn't work for me. I > > think 8M is a crazily large size :( > > Post a small program demonstrating your problem. > (I'd test udp receive with netcat too) > -- > vda > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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