networking_server

a project of networking protocol

File structure

• src: all the code of the Http server, which include a Makefile and source code.
• pre: The study code, some test code of socket interfaces like select,poll, epoll and so on.
• bgnet_examples - the code of Beej's Guide to Network Programming
• tutorial - some test code.

Test steps

1. change the location to ./src dirtory.
2. using epoll dispatcher, make sure the event_loop->event_dispatcher in the event_loop.c equal to &epoll_dispatcher; using poll dispatcher, change the value to &poll_dispatcher.
3. using make to compile the code, then you will get an executable file
4. run the executable file, it will run the sercer in localhost:21042
5. open a new terminal window, using ab tool with ab -n 10000 -c 100 -k http://127.0.0.1:21042/ command to test.

Some Notes

1. using gdb debug the child process: -exec set follow-fork-mode child
2. check which process occupy one port: lsof -i:<port>, for instance, lsof -i:8080

debug the core dump

1. check if system open dump core function by ulimit -c.
2. if the output is 0, using ulimit -c unlimited
3. install coredumpctl tool, the core dump file will in /var/lib/systemd/coredump/
4. examine the backtrace using gdb #coredumpctl gdb app_name
(gdb) bt
   details can be seen in this wiki