Re: [lwip-devel] Issue related to Tcp Server max connections

[Ishmeet]

Hello guys,

sorry for the delay,

Thanks Simon for the reply, I was using tcp_listen at first which is
basically a #define to tcp_listen with backlog with backlog set to 255, now
I am using tcp_listen_backlog with backlog set to 4, NOTE: my no. of pcb
connections are also 4, and priority is set to HIGH, so after 4 successful
connection, 5th connection gives TCP SYN packet but does not receive any
replies, thus gets time out after specified no. of timeouts. This scenario
is working for me weather its right or not, that I am not sure of, I still
have much to learn. I was thinking the fifth connection could receive a FIN
or RST rather than getting timeouts, anyways, maybe there's a way of doing
this from the application, that I would see later.

Hello Zach smith,
I am using a NoOS on STM32L151 board running under the wireless driver. I
have used listen backlog to 4. 
I checked that the first 4 sockets were getting successful 3 way handshake,
but the 5th one was getting time out (the scenario I have explained above).
For the remote ping issue, I was not pinging domain name like
www.google.com, I was to ping its IP address like 74.125.235.16, well yes
now remote ping is working, the problem was  I misconfigured the dhcp
server, as my module is the dhcp client.

thanks for the reply's, 
Can you also give some fix about tcp poll mechanism fast, as my http page
loads very slow. I am thinking of increasing the tcp window size, but I am
almost out of RAM. The mem.o and memp.o are using 2K, 2K each respectively.
I am almost left with tiny 400 to 500 Bytes on the whole. would increasing
the TCP MSS or TCP window size would help in getting fast tcp poll and
subsequently fast http server page loads, or there is any other way?

Thanks,
Ishmeet



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