C++ socket library - uses the same interface as standard <iostream>.
The sample server implementation is in server.cpp file. To test how it works, you might issue following commands:
$ make
$ bin/server 8888
$ # In other terminal:
$ nc localhost 8888
Hello there! Type two integers now.
> 3 5
Thanks. Here is their sum: 8
Now I'll just echo your line of text.
> Hmmm, it works.
Hmmm, it works.
This library was inspired by http://www.pcs.cnu.edu/~dgame/sockets/socketsC++/sockets.html
I decided to recreate it in a better way though, because the original one had some flaws, such as not being able to specify a timeout, or not parsing anything correctly if the message comes in two parts (see below for explanation):
Remote wants to send "123 456\n":
+-+-+-+-+-+-+-+--+
|1|2|3| |4|5|6|\n|
+-+-+-+-+-+-+-+--+
But it turns out being split:
+-+-+-+ +-+-+-+ +-+--+
|1|2|3| | |4|5| |6|\n|
+-+-+-+ +-+-+-+ +-+--+
(the OS arranges packets, so it's independent from library)
Say host wanted to input two numbers:
int a,b;
in>>a>>b;
The original library would read the ementioned packets as:
a=123;
b=45;
and leave the "6\n" in buffer for next reads. This library reads it corrrectly:
a=123;
b=456;
You can check this using the following snippet of Python code:
import sys
import time
# Printing one number
sys.stdout.write("123\n")
sys.stdout.flush()
# You can do this split in time, like this:
sys.stdout.write("45")
sys.stdout.flush()
time.sleep(1)
sys.stdout.write("6\n")
sys.stdout.flush()
# And a new line:
sys.stdout.write("If this shows up, I work!")
sys.stdout.flush()
and typing into the terminal:
python test.py | nc localhost 8888