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an echo server example based on epoll, a scalable I/O event notification mechanism

epoll-example 최신버젼 다운로드

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# epoll echo server example

- epoll.c includes both server-end and client-end code.
- please refer to [epoll](http://man7.org/linux/man-pages/man7/epoll.7.html) for details.

# demo

open 4 terminals: t1, t2, t3 and t4. t1 is used for starting echo server, t2 and t3 are used for starting clients, t4 is used for monitoring the connections.

### t1

root:epoll-example# ./a.out -c
    input: hello world
    echo: hello world
    input:

### t2

root:epoll-example# ./a.out -c
    input: The  epoll  API  performs  a  similar task to poll(2): monitoring multiple file descriptors to see if I/O is possible on any of them.
    echo: The  epoll  API  performs  a  similar task to poll(2): monitoring multiple file descriptors to see if I/O is possible on any of them.
    input: I'm geeksword, guy
    echo: I'm geeksword, guy
    input:

### t3

root:epoll-example# ./a.out -s
    [+] connected with 127.0.0.1:40380
    [+] data: hello world
    [+] connected with 127.0.0.1:40383
    [+] data: The  epoll  API 
    [+] data:  performs  a  si
    [+] data: milar task to po
    [+] data: ll(2): monitorin
    [+] data: g multiple file 
    [+] data: descriptors to s
    [+] data: ee if I/O is pos
    [+] data: sible on any of 
    [+] data: them.
    [+] data: I'm geeksword, g
    [+] data: uy

### t4

root:epoll-example# netstat --inet -n |grep 8080
    tcp        0      0 127.0.0.1:40383         127.0.0.1:8080          ESTABLISHED
    tcp        0      0 127.0.0.1:40380         127.0.0.1:8080          ESTABLISHED
    tcp        0      0 127.0.0.1:8080          127.0.0.1:40380         ESTABLISHED
    tcp        0      0 127.0.0.1:8080          127.0.0.1:40383         ESTABLISHED

epoll-example

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