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TM4C1294 NDK V2.24 Problem

hi

i am using TM4C129X Launchpad to be the HW platform to develop the network function, the SW package version list:

TI-RTOS version : 2.2.01.33

BIOS version : 6.41.04.54

NDK version : 2.24.02.31

my testing evnironment : using TM4C be the server, and a Linux based PC be the client.

when i enable only TCP socket, everything is fine, i can make 5 TCP client connection.

But if i enable not only TCP, but also http and UDP on TM4C to be the server, it can only connect 1~2 client connection, the Linux PC feedback the error message is "TCP Connect error: Connection refused".

i have no idea about what the root cause could be, need your hint for this issue, thank you in advance!