SO_REUSEADDR compatibility problems

2020-11-21 Thread James Courtier-Dutton
Hi, The use case I am struggling with is the use of a Windows program running in wine that is sending and receiving UDP packets. This particular windows program uses SO_REUSEADDR socket option and opens two sockets. Lets call the first one socket A, and the second one Socket B. The SO_REUSEADDR f

Wireless network card capabilities

2007-02-04 Thread James Courtier-Dutton
Hi, Can Wireless network cards receive and transmit on two channels at once? I am thinking of implementing a way for a wireless VoIP phone on Linux being able to hand off from one AP to another without dropping the call. For this to work, the wireless card must be able to chat on two channels d

Re: gratuitous arp

2006-11-26 Thread James Courtier-Dutton
dean gaudet wrote: On Sun, 26 Nov 2006, James Courtier-Dutton wrote: dean gaudet wrote: hi... i ran into some problems recently which would have been avoided if my box did a gratuitous arp as it brought up all interfaces (the router took forever to timeout the ARP entries for interface

Re: gratuitous arp

2006-11-25 Thread James Courtier-Dutton
dean gaudet wrote: hi... i ran into some problems recently which would have been avoided if my box did a gratuitous arp as it brought up all interfaces (the router took forever to timeout the ARP entries for interface aliases). so i set about looking to see why that wasn't happening. i eit

Max number of TCP sessions

2006-11-16 Thread James Courtier-Dutton
Hi, For a host using a Pentium 4 CPU at 2.8Mhz, what is a sensible max value for number of TCP sessions this host could run under Linux? Bandwidth per TCP session is likely to be about 10kbytes/second. Kind Regards James - To unsubscribe from this list: send the line "unsubscribe netdev" in t

Re: [RFC][PATCH 0/3] TCP/IP Critical socket communication mechanism

2005-12-15 Thread James Courtier-Dutton
Mitchell Blank Jr wrote: James Courtier-Dutton wrote: When I had the conversation with Matt at KS, the problem we were trying to solve was "Memory pressure with network attached swap space". s/swap space/writable filesystems/ You can hit these problems even if you have no swap.

Re: [RFC][PATCH 0/3] TCP/IP Critical socket communication mechanism

2005-12-14 Thread James Courtier-Dutton
Sridhar Samudrala wrote: On Wed, 2005-12-14 at 20:49 +, James Courtier-Dutton wrote: Jesper Juhl wrote: On 12/14/05, Sridhar Samudrala <[EMAIL PROTECTED]> wrote: These set of patches provide a TCP/IP emergency communication mechanism that could be used to guarantee high pr

Re: [RFC][PATCH 0/3] TCP/IP Critical socket communication mechanism

2005-12-14 Thread James Courtier-Dutton
Jesper Juhl wrote: On 12/14/05, Sridhar Samudrala <[EMAIL PROTECTED]> wrote: These set of patches provide a TCP/IP emergency communication mechanism that could be used to guarantee high priority communications over a critical socket to succeed even under very low memory conditions that last for