This is a multi-threaded file-based web server with thread-pooling implemented in Java, with the HTTP/1.1 keep-alive behavior implemented.
The webserver is a static file system that can allow client to have access to the static html files on the server.
.
├── WebContent # Web root directory containing files for test
| ├── test.html
│ └── index.html
├── src # Source files
│ ├── main
| | ├── java
| | | └── com.webserve
| | | ├── config
| | | | ├── Configuration
| | | | └── ConfigurationManager
| | | ├── core
| | | | ├── ClientHandler
| | | | └── WebServer
| | | ├── exceptions
| | | | ├── HttpConfigurationException
| | | | ├── HttpExecutionException
| | | | └── HttpParsingException
| | | └── http
| | | ├── HttpMethod
| | | ├── HttpParser
| | | ├── HttpRequest
| | | ├── HttpResponse
| | | └── HttpStatusCode
| | └── resources
| | └── log4j2.properties
│ └── test
| └── com.webserver.http
| └── HttpParserTest
├── webserver.properties # Webserver configuration file
├── pom.xml # Maven configuration file
└── README.md
maven package
java -jar WebServer-1.0-SNAPSHOT.jar [--conf] [Webserver.properties]
# The default configuration file is Webserver.properties
# Webserver.properties
port=8080 # The port of the server.
max_thread_num=100 # The maximum thread number of the thread pool to handle the clients.
webroot=WebContent # Directory where the files that clients can request are stored.
timeout=5 # The time in seconds that the host will allow an idle connection to remain open before it is closed.
According to RFC-2616, the methods GET and HEAD MUST be supported by all general-purpose servers and all other methods are OPTIONAL. This project currently only supports GET and HEAD.
HTTP-message = method SP request-target SP HTTP-version CRLF
*( header-field CRLF )
CRLF
[ message-body ]
The request-target part specifies the path of the file to access.
The query part (?[key1]=[value1]&[key2]=[value2]) in request-target and message-body are supported but the parsed results are simply ignored.
GET /index.html HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Cache-Control: max-age=0
sec-ch-ua: " Not A;Brand";v="99", "Chromium";v="98", "Google Chrome";v="98"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
cp-extension-installed: Yes
Sec-Fetch-Site: cross-site
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
HTTP/1.1 200 OK
Keep-Alive:timeout=5
Connection:keep-alive
Content-Length:143
Content-Type:text/html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>index</title>
</head>
<body>
hello world
</body>
</html>
SC_OK(200, "OK"),
SC_BAD_REQUEST(400, "Bad Request"),
SC_METHOD_NOT_ALLOWED(401, "Method Not Allowed"),
SC_NOT_FOUND(404, "Not Found"),
SC_INTERNAL_SERVER_ERROE(500, "Internal Server Error"),
SC_NOT_IMPLEMENTED(501, "Not Implemented");
If the client specifies Connection: keep-alive in the request message,
- If the request is processed successfully (status code 200), the connection will be kept alive for another
timeout(specified in the configuration file) seconds. - If the request is processed unsuccessfully, the connection will be closed.
- If the connection is idle for more than
timeoutseconds, the connection will be closed.
If the keep-alive behavior is triggered, the response message will contain Keep-Alive:timeout=[timeout] Connection:keep-alive.
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