Motivation

When I was faced with the need to create a system for publishing BI-information (and any other), I found that there was no ready-made solution for making an effective continuous platform for a C-application. Existing solutions (like NGINX) are forced to tear up space due to CGI/FastCGI and the like and the your application will not see incoming raw HTTP content, for example.
I tried to assemble a set of modules that allow me to assemble an initial semi-finished product for a C-application. Next, you can develop the functionality in the preferred direction.

Now this set includes:

• A multithreaded web server that processes requests to both static content and endpoint in the application. Works with GET, POST and Websockets. There is a parsing and transmission of parameters.
• Basic structures and initial functionality for processing tables - storage, cell access, sorting, grouping, reading and writing to a CSV file.
• Example of using SQLite.
• Example of connection of endpoints and global application object for sharing between web session.
• An example of a simple frontend-websockets application ( HTML / Javascript / WebGL) to demonstrate the operation of the web application described above.

Activation and info

This pack is for Oracle Linux (RedHat/Fedora/Centos family)
file glob3 - compiled executable file for this Linux family

GCC build cmd:
gcc main_http.c -lpthread -lsqlite3 -g3 -lm -std=c99 -O3 -o glob3

run cmd:

• ./glob3 (interacive mode)
• ./glob3 -d (daemon mode)
• ./glob3 -h (start info)

ini params (ini.txt)
http_port:9085 (port)
http_treads:8 (limit for count of threads in http/get/post parallels requests. WS treads - unlimited)
ini_def_page:./static/html_static/index_01.html (path for default index-html file, when http://127.0.0.1:9085)

url examples:

• http://127.0.0.1:9085/test (for diagnostics)
• http://127.0.0.1:9085 (main, default mode)
• http://127.0.0.1:9085/view_tbl_001 (example for get small html table, pre - installed examle endpoint #1)
• http://127.0.0.1:9085/view_tbl_002 (example for get medium html table, pre - installed examle endpoint #2)

apps users info and login/password (for 'apps', not for server):

id	USER	PASSWORD
1	sys	mgr
3	user1	23

Upper folder structure

The working directory should contain the following:

• executable file (glob3)
• text file with settings (ini.txt)
• CSV file for table examples (test_data_02S.csv)
• 16470096361658847.jpg - Pic for Error page
• folders: data (for application tables emps.csv and pwd.csv), app_logs (for logs file), static (for frontend example - html, JS, CSS and pics)

The scenario of the example

• Run file glob3
• Visit http://127.0.0.1:9085
• Mouse double click on page
• Enter user1 and 23 to login to "App"
• Navigate between slides: switch between slides using the sidebar on the right. The cube can be captured with the mouse and rotated. Double-click on the cube - this is the shift of the cube layer. Last slide - 2D graphs example. Double-click on graph for passing on top level. Top-level graph can be moving by mouse.
• Use tow or more browsers for view this web resource (http://127.0.0.1:9085). Use last(lower) button for join current browser to collaboration. And now, activity on one page will be propagate to anothers.