Each child connect to the father on the same port, but the problem isn't in the father as the server, the problem is in the father as a client to the grandfather.
Then i must decide use one socket for each child to send the data received from them to the grandfather and reuse the protocol logic, or implement a new protocol to send all the children messages to the grandfather over one single socket. The second case is more complex because i must implement a new protocol that allows multiplexing messages from the children, and the protocol involves some sinchronization to know what message to send next on after reconnection. The first case is more simple but i am afraid that so many sockets at the top level could be a problem on terms of memory and CPU resources and, perhaps, network traffic (I am wondering how much). The third solution is an hibrid: many "virtual" sockets over a single real socket. This allows using one single socket but reusing the protocol. To do that, the best approach could be the lower layer of the communications (MINA) using a single real socket but simulating multiple "virtual" sockets at the upper layer (protocol). So, for example, when MINA detects the disconnection of the real socket, fires many "socketClosed" callbacks, one for each "virtual socket". elihusmails wrote: > > Are the fathers listening on the same port for the children? Or does each > child connect to the father on a different port? > > > On Dec 10, 2007 9:51 PM, oscarcs <[EMAIL PROTECTED]> wrote: > >> >> I must develop a system made of nodes in a tree layout. Each node >> (computer) >> has many children and only one father. >> >> Each node sends TCP messages (using a propietary protocol) to the father, >> an >> the father itself must send the messages to the grandfather and so on. >> >> I have been using MINA to solve many of the communications concerns, but >> now >> i have some doubts. >> >> My questions are: >> >> 1. Is there a way to simulate at the lowest posible level, many sockets >> over >> a single socket?. I mean, using a single socket to send to the >> grandfather >> all the messages comming from the children, so i can reuse the procotol >> logic in all the levels. >> >> 2. If not, another aproach would be replicate all the child socktets in >> all >> the levels, so at the upper level i will end with a single machine with >> too >> many sockets. How much is the overhead (in reources or CPU) of using >> multiple sockets vs. single socket?. Is there any limit? >> >> Sorry for my english. >> >> Thanks in advance. >> -- >> View this message in context: >> http://www.nabble.com/Many-sockets-over-single-socket-tp14266741s16868p14266741.html >> Sent from the Apache MINA Support Forum mailing list archive at >> Nabble.com >> . >> >> > > > -- > -------------------------------- > The adjuration to be "normal" seems shockingly repellent to me; I see > neither hope nor comfort in sinking to that low level. I think it is > ignorance that makes people think of abnormality only with horror and > allows > them to remain undismayed at the proximity of "normal" to average and > mediocre. For surely anyone who achieves anything is, essentially, > abnormal. > Dr. Karl Menninger > > -- View this message in context: http://www.nabble.com/Many-sockets-over-single-socket-tp14266741s16868p14282909.html Sent from the Apache MINA Support Forum mailing list archive at Nabble.com.
