Re: using haproxy with tcp as a router
Thank you for this response. -tim On 11/12/13, Baptiste wrote: > Hi Tim, > > Solution 1 can't work as you want it. > HAProxy can look in the payload for an ID, it could match it in a > stick table you would have to fill up, but it can't forward the > payload on an already established TCP connection. > > Solution 2 may work, since HAProxy only analyzes HTTP headers. It does > not care to what happens in the body. > > Baptiste > > > On Mon, Nov 11, 2013 at 9:25 PM, Tim Prepscius > wrote: >> I'm wondering if I can use haproxy for my problem: >> >> Is it possible for haproxy to: >> 1. read the first line of a tcp connection >> 2. in that line will be an ID. >> 3a. use the ID to lookup in a mem db what server to forward the TCP >> connection to. >> 3b. use the ID to lookup in a mem db what server to forward data to >> through an existing TCP connection. (1 connection per server to ha >> proxy) >> >> >> Or: >> >> Is it possible for haproxy to: >> 1. read an http request for a http connection. >> 2. determine what server to foward to based on the page requested. >> 3. then allow generic tcp data (both upstream/downstream) on that >> connection (after the headers). >> >> >> I'm also entertaining the possibility of sticking a load balancer in >> front of multiple instances of a custom router process I create. So >> that the "header inspection" doesn't need to take place on the load >> balancer. >> >> >> >> I've also described the problem in more detail here: >> http://stackoverflow.com/questions/19914209/a-load-balancer-for-tcp-with-an-id-to-server-lookup-similar-to-a-chat-room-load >> >> -tim >> >
Re: using haproxy with tcp as a router
Hi Tim, Solution 1 can't work as you want it. HAProxy can look in the payload for an ID, it could match it in a stick table you would have to fill up, but it can't forward the payload on an already established TCP connection. Solution 2 may work, since HAProxy only analyzes HTTP headers. It does not care to what happens in the body. Baptiste On Mon, Nov 11, 2013 at 9:25 PM, Tim Prepscius wrote: > I'm wondering if I can use haproxy for my problem: > > Is it possible for haproxy to: > 1. read the first line of a tcp connection > 2. in that line will be an ID. > 3a. use the ID to lookup in a mem db what server to forward the TCP > connection to. > 3b. use the ID to lookup in a mem db what server to forward data to > through an existing TCP connection. (1 connection per server to ha > proxy) > > > Or: > > Is it possible for haproxy to: > 1. read an http request for a http connection. > 2. determine what server to foward to based on the page requested. > 3. then allow generic tcp data (both upstream/downstream) on that > connection (after the headers). > > > I'm also entertaining the possibility of sticking a load balancer in > front of multiple instances of a custom router process I create. So > that the "header inspection" doesn't need to take place on the load > balancer. > > > > I've also described the problem in more detail here: > http://stackoverflow.com/questions/19914209/a-load-balancer-for-tcp-with-an-id-to-server-lookup-similar-to-a-chat-room-load > > -tim >
using haproxy with tcp as a router
I'm wondering if I can use haproxy for my problem: Is it possible for haproxy to: 1. read the first line of a tcp connection 2. in that line will be an ID. 3a. use the ID to lookup in a mem db what server to forward the TCP connection to. 3b. use the ID to lookup in a mem db what server to forward data to through an existing TCP connection. (1 connection per server to ha proxy) Or: Is it possible for haproxy to: 1. read an http request for a http connection. 2. determine what server to foward to based on the page requested. 3. then allow generic tcp data (both upstream/downstream) on that connection (after the headers). I'm also entertaining the possibility of sticking a load balancer in front of multiple instances of a custom router process I create. So that the "header inspection" doesn't need to take place on the load balancer. I've also described the problem in more detail here: http://stackoverflow.com/questions/19914209/a-load-balancer-for-tcp-with-an-id-to-server-lookup-similar-to-a-chat-room-load -tim
