Tondík Web Server

This Web Server was created as project for subject "Programming in C++" at VSB-TUO University

Milestone to the half of semester

• HTTP Request parsing
• Sending HTTP response
• Completly working "dev" server
• CMD line arguments: --dev, --host, --port
• Serving multiple users at once (multithreading)

CMD Line

> ./main --help
Tondík Web Server

Argument types:
 --name=value
 -name value

Argument list:
 --help - shows this help
Dev mode:
 --dev - start server in dev mode
 --host - start dev server on 0.0.0.0 interface
 --port=8080 - start dev server on specific port
 --path=/path/to/folder - server files in specified folder
Server mode:
 --path=/etc/tondik - path to config folder

Modes

Dev mode (Fully implemented)

Used to serve only one folder. By default started on 127.0.0.1 on port 8080 and it will be serving ./ folder.

Parameters

• --dev - start dev mode
• --host - start on 0.0.0.0
• --port=1234 - change port
• --path=/path/to/folder - change folder

Server mode (Fully implemented)

Used to serve multiple folders based on domains/subdomains/hostnames.

Start

• On default port 80:

sudo ./main

Port can by changed in config file, default ./main.ini

./main --path=/path/to/config/folder

Config file specifications (Based on INI)

• key=value - set value to key
• ;comment - single line comments
• [section] - section, keys under this section will be: section.key, section will be ended when another section starts
• array[]=value - add value to array
• if something is before comment, then it isn't threated as comment, so: mime_types[]=test,text/plain; charset=UTF-8 will be treated as new item to mime_type array with value "test,text/plain; charset=UTF-8"

Main config file

port=80
;directory, where domain configs will be located
config_directory=/etc/tondik/configs
;if local=false, server is started on 0.0.0.0, if local=true then server is started on 127.0.0.1 (optional) - default value false
local=false
;custom response headers (optional) -  array of strings
headers[]=Server: SuperWebServer
headers[]=Header: CustomHeaderValue
;custom mime types (optional) - array of strings
;format: "extension,mime_type"
mime_types[]=php,text/php
mime_types[]=html,text/html
mime_types[]=htm,text/html
access_log=/var/log/webserver/access.log
error_log=/var/log/webserver/error.log
; default root folder if no domain is found
default_root=/var/www/default
; default index file if no domain is found (optional), because it will use index.html by default
index=index.html

Config for domain/subdomain/hostname

• serving specific folder

  domain=example.com
  root=/var/www/example.com
  ; default index will be index.html, but can be changed by this option
  index=index.htm
  ; access_log and error_log is optional and will be inherited from main config
  ; but when specifying custom paths fro access and error log, both must be set
  ; otherwise single option will be ignored
  access_log=/var/log/webserver/example.com/access.log
  error_log=/var/log/webserver/example.com/error.log

• proxy pass (reverse proxy)

  domain=something.example.com
  reverse_proxy=localhost:8080
  access_log=/var/log/webserver/example.com/access.log
  error_log=/var/log/webserver/example.com/error.log

Specification

• support only static files (html,css,js,videos,images...)
• support for HTTP 1.1
• doesn't support keep-alive connection
• support partial content:
  • when streaming video file, for example in vlc, you can skip through video file
  • supported only in VLC, because browsers are using same connection to do this and we don't support keep-alive connections

Testing

Dev mode

• Logs are written in /tmp/log.txt

  ❯ wrk -t12 -c1000 -d30s http://localhost:8080
  Running 30s test @ http://localhost:8080
    12 threads and 1000 connections
    Thread Stats   Avg      Stdev     Max   +/- Stdev
      Latency    38.46ms    4.07ms 151.68ms   91.13%
      Req/Sec     2.15k   191.48     2.56k    82.77%
    773070 requests in 30.10s, 343.56MB read
    Socket errors: connect 0, read 773046, write 0, timeout 0
  Requests/sec:  25683.19
  Transfer/sec:     11.41MB

• Logs are written to stdout

  ❯ wrk -t12 -c1000 -d30s http://localhost:8080
  Running 30s test @ http://localhost:8080
    12 threads and 1000 connections
    Thread Stats   Avg      Stdev     Max   +/- Stdev
      Latency    50.21ms    5.30ms 140.66ms   85.17%
      Req/Sec     1.65k   150.66     2.26k    79.20%
    592907 requests in 30.10s, 263.50MB read
    Socket errors: connect 0, read 592884, write 0, timeout 0
  Requests/sec:  19697.31
  Transfer/sec:      8.75MB

Server mode

• Static files ❯ wrk -t12 -c1000 -d30s http://prvnistranka:8080 Running 30s test @ http://prvnistranka:8080 12 threads and 1000 connections Thread Stats Avg Stdev Max +/- Stdev Latency 38.23ms 6.38ms 132.58ms 78.05% Req/Sec 2.16k 313.94 3.09k 68.12% 775178 requests in 30.10s, 1.00GB read Socket errors: connect 0, read 775161, write 0, timeout 0 Requests/sec: 25754.62 Transfer/sec: 33.92MB

• Reverse proxy ❯ wrk -t12 -c1000 -d30s http://druhastranka:8080 Running 30s test @ http://druhastranka:8080 12 threads and 1000 connections Thread Stats Avg Stdev Max +/- Stdev Latency 418.07ms 29.97ms 459.64ms 97.89% Req/Sec 210.67 109.07 595.00 65.80% 71001 requests in 30.05s, 604.70MB read Socket errors: connect 0, read 71001, write 0, timeout 0 Requests/sec: 2362.55 Transfer/sec: 20.12MB