September 2013
Intermediate to advanced
548 pages
12h 25m
English
Content preview from Programming Erlang, 2nd Edition
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An Example
We’ll start with a simple example that shows how to
use lib_chan. We’re going to create a simple
server that can compute factorials and Fibonacci
numbers. We’ll protect it with a password.
The server will operate on port 2233.
We’ll take four steps to create this server.
-
Write a configuration file.
-
Write the code for the server.
-
Start the server.
-
Access the server over the network.
Step 1: Write a Configuration File
Here’s the configuration file for our example:
| socket_dist/config1 | |
| | {port, 2233}. |
| | {service, math, password, "qwerty", mfa, mod_math, run, []}. |
The configuration file has a number of
service tuples of this form:
| | {service, <Name>, password, <P>, mfa, <Mod>, <Func>, <ArgList>} |
The arguments are delimited by the atoms service ...
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