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{{task|Networking and Web Interaction}} [[Category:Web]]
{{omit from|GUISS}}
{{omit from|Locomotive Basic|No sockets}}
{{omit from|Lotus 123 Macro Scripting}}
{{omit from|Maxima}}
{{omit from|ML/I|No sockets}}
{{omit from|Retro}}
{{omit from|SQL PL|It does not listen any port different to the database server and it does not has daemons - No sockets}}
{{omit from|TI-83 BASIC}}
{{omit from|ZX Spectrum Basic|No sockets}}
The browser is the new [[GUI]] !
;Task:
Serve our standard text <big><big><code>Goodbye, World!</code></big></big> to http://localhost:8080/ so that it can be viewed with a web browser.
The provided solution must start or implement a server that accepts multiple client connections and serves text as requested.
Note that starting a web browser or opening a new window with this URL
is not part of the task.
Additionally, it is permissible to serve the provided page as a plain text file (there is no requirement to serve properly formatted [[HTML]] here).
<br><br>
=={{header|Ada}}==
{{libheader|AWS}}
Uses many defaults, such as 5 max simultaneous connections.
<
with AWS; use AWS;
with AWS.Response;
Line 29 ⟶ 49:
Server.Shutdown (TheServer);
end HelloHTTP;
</syntaxhighlight>
=={{header|Aime}}==
Goodbye, world! with random colors and socket polling:
<syntaxhighlight lang="aime">void
serve(dispatch w, file s, list colors)
{
file i, o;
date d;
accept(i, o, s, 0);
f_(o, "HTTP/1.1 200 OK\n"
"Content-Type: text/html; charset=UTF-8\n\n"
"<!DOCTYPE html><html><head><title>Bye-bye baby bye-bye</title>"
"<style>body { background-color: #111 }"
"h1 { font-size:4cm; text-align: center; color: black;"
" text-shadow: 0 0 2mm ", colors[drand(3)], "}</style></head>"
"<body><h1>Goodbye, world!</h1></body></html>\n");
# chrome won't show the page if we close right away. we'll close in 2s.
d.now;
d.offset(2, 0);
w_schedule(w, d, f_close, i);
}
integer
main(void)
{
dispatch w;
file s;
tcpip_listen(s, 8080, 0);
w_watch(w, s, serve, w, s, list("blue", "green", "red", "yellow"));
w_press(w);
return 0;
}</syntaxhighlight>
Or simply:
<syntaxhighlight lang="aime">file i, o, s;
tcpip_listen(s, 8080, 0);
while (1) {
accept(i, o, s, 0);
f_(o, "HTTP/1.1 200 OK\n"
"Content-Type: text/html; charset=UTF-8\n\n"
"<!DOCTYPE html><html><head><title>baby bye-bye</title></head>"
"<body><h1>Goodbye, world!</h1></body></html>\n");
f_flush(o);
}</syntaxhighlight>
=={{header|Amazing Hopper}}==
VERSION 1: "Hopper" flavour:
<syntaxhighlight lang="amazing hopper">
// Hello world! mode Server
#include <hopper.h>
main:
fd=0,fdc=0,message=""
{"HTTP/1.1 200 OK\n","Content-Type: text/html; charset=UTF-8\n\n"}cat
{"<!DOCTYPE html><html><head><title>Bye-bye baby bye-bye</title>"},cat
{"<style>body { background-color: #111 },cat
{"h1 { font-size:4cm; text-align: center; color: black; text-shadow: 0 0 2mm red}</style>"}cat
{"</head><body><h1>Goodbye, world!</h1></body></html>\n"}cat,
mov(message)
/* Open socket in localhost (by default) */
/* Accept 5 conections (there are also 5 by default, if you put "any weá" there) */
{5,8080}socket (OPENTCPSRV), mov(fd)
/* accept conection & send message */
accept(fd), mov(fdc)
{message},send(fdc)
/* close all */
{fdc}socket(CLOSESOCK)
{fd}socket(CLOSESOCK)
exit(0)
</syntaxhighlight>
VERSION 2: "Hopper-BASIC" flavour
<syntaxhighlight lang="amazing hopper">
// Hello world! mode Server: desde el navegador, escriba localhost:8080
#include <hbasic.h>
Begin
Declare as Numeric (fd,fdc)
as Alpha (message,HEAD,head,body,form,html)
Let ( HEAD := Cat$("HTTP/1.1 200 OK\n","Content-Type: text/html; charset=UTF-8\n\n") + ("<!DOCTYPE html>\n") )
ParsNormal$("title","","Bye-bye baby bye-bye")(head)
ParsNormal$("style","","body { background-color: #111 } h1 { font-size:4cm; text-align: center; color: black; text-shadow: 0 0 2mm red}")(head)
ParsNormal$("head","",head)(html)
ParsNormal$("h1","","Goodbye, world!")(body)
ParsNormal$("body","",body)(html)
ParsNormal$("html","",html)(form)
Let( form := Cat$(HEAD,form))
Let( message := Tran$(">\n<","><", form) )
Print( message, Newl)
/* Open socket in localhost (by default) */
Let( fd := OpenServerTCP(3,8080) )
/* accept conection & send message */
Let( fdc := Accept(fd) )
Send(message,fdc)
/* close all */
CloseSocket(fdc)
CloseSocket(fd)
End
</syntaxhighlight>
{{out}}
<pre>Open your browser, and type in the navigation bar: "localhost: 8080": It will show "Goodbye World!" in huge letters and adorable lovecraftian colors!
</pre>
=={{header|AntLang}}==
In plain AntLang:
<syntaxhighlight lang="antlang">serv: httprun[8080; {"HTTP/1.0 200 OK\r\nContent-Type: text/plain\r\n\r\nGoodbye, World!"}]</syntaxhighlight>
Using ALC:
<syntaxhighlight lang="antlang">load["handlers.ant"]
serv: httprun[8080; {httpwrap["Goodbye, World!"]}]</syntaxhighlight>
To close the server:
<syntaxhighlight lang="antlang">kill[serv]</syntaxhighlight>
=={{header|Arturo}}==
<syntaxhighlight lang="rebol">serve.port:8080 [ GET "/" -> "Goodbye, World!" ]</syntaxhighlight>
{{out}}
If you navigate to "localhost:8080" through our web browser, we'll see the message:
<pre>Goodbye, World!</pre>
=={{header|AutoIt}}==
<syntaxhighlight lang="autoit">
TCPStartup()
$socket = TCPListen("0.0.0.0",8080)
$string = "Goodbye, World!"
While 1
Do
$newConnection = TCPAccept($socket)
Sleep(1)
Until $newConnection <> -1
$content = TCPRecv($newConnection, 2048)
If StringLen($content) > 0 Then
TCPSend($newConnection, Binary("HTTP/1.1 200 OK" & @CRLF))
TCPSend($newConnection, Binary("Content-Type: text/html" & @CRLF))
TCPSend($newConnection, Binary("Content-Length: "& BinaryLen($string) & @CRLF & @CRLF))
TCPSend($newConnection, $string)
EndIf
TCPCloseSocket($newConnection)
WEnd
</syntaxhighlight>
=={{header|AWK}}==
With GNU AWK (gawk) a simple web server can be implemented.
The example is taken from
[http://www.gnu.org/software/gawk/manual/gawkinet/gawkinet.html#Primitive-Service]
(Documentation is licensed under GNU Free Documentation License, Version 1.3)
<
BEGIN {
RS = ORS = "\r\n"
Line 49 ⟶ 230:
continue;
close(HttpService)
}</
=={{header|BASIC}}==
==={{header|BaCon}}===
Requires BaCon 4.2 or higher.
<syntaxhighlight lang="bacon">' Define HTTP constants
CONST New$ = CHR$(13) & NL$
CONST Sep$ = CHR$(13) & NL$ & CHR$(13) & NL$
CONST Msg$ = "<html><head>BaCon web greeting</head><body><h2>Goodbye, World!</h2></body></html>"
' Get our IP
Ip$ = "localhost"
PRINT "Connect from browser '", Ip$, ":8080'."
' Ignore child signals to avoid zombie processes
SIGNAL SIG_IGN, SIGCHLD
' Open listening port
OPEN Ip$ & ":8080" FOR SERVER AS mynet
' Keep receiving requests
WHILE TRUE
' Handle for newly incoming connection
fd = ACCEPT(mynet)
' Incoming connection -> create background process
spawn = FORK
' We are in the child
IF spawn = 0 THEN
' Get the request
REPEAT
RECEIVE dat$ FROM fd
PRINT dat$
UNTIL RIGHT$(dat$, 4) = Sep$
' Reply that we're OK
SEND "HTTP/1.1 200 Ok" & New$ & "Content-Length: " & STR$(LEN(Msg$)) & Sep$ & Msg$ TO fd
' Close connection
CLOSE SERVER fd
' End this process
ENDFORK
ENDIF
WEND</syntaxhighlight>
==={{header|BBC BASIC}}===
{{works with|BBC BASIC for Windows}}
This explicitly supports multiple concurrent connections.
<
PROC_initsockets
Line 115 ⟶ 343:
WAIT 0
UNTIL FALSE
END</
=={{header|C}}==
This is, um, slightly longer than what other languages would be.
<
#include <stdlib.h>
#include <unistd.h>
Line 131 ⟶ 359:
char response[] = "HTTP/1.1 200 OK\r\n"
"Content-Type: text/html; charset=UTF-8\r\n\r\n"
"<
"<style>body { background-color: #111 }"
"h1 { font-size:4cm; text-align: center; color: black;"
Line 172 ⟶ 400:
close(client_fd);
}
}</
=={{header|C sharp|C#}}==
<
using System.Net.Sockets;
using System.Net;
Line 203 ⟶ 429:
}
}
}</
{{works with|NancyFX}}<syntaxhighlight lang="csharp">namespace Webserver
{
using System;
using Nancy;
using Nancy.Hosting.Self;
public class HelloWorldModule : NancyModule
{
public HelloWorldModule()
{
this.Get["/"] = parameters => "Goodbye, world!";
}
public static void Main()
{
var uri = new Uri("http://localhost:8080");
using (var host = new NancyHost(uri))
{
host.Start();
Console.WriteLine("Web server is now running!");
Console.WriteLine("Press 'Enter' to exit.");
Console.ReadLine();
}
}
}
}</syntaxhighlight>
=={{header|C++}}==
C version compiles as C++ (known for G++ on Linux)
=={{header|Clojure}}==
Line 211 ⟶ 466:
File: src/goodbye_world/handler.clj
<
(:require [compojure.core :refer :all]
[compojure.handler :as handler]
Line 222 ⟶ 477:
(def app
(handler/site app-routes))</
To start up the server on port 8080, run the following from the project's root:
Line 232 ⟶ 487:
Here's the example with a pre-built server:
<
(defpackage :hello-web (:use :cl :hunchentoot))
(in-package :hello-web)
Line 238 ⟶ 493:
(define-easy-handler (hello :uri "/") () "Goodbye, World!")
(defparameter *server* (hunchentoot:start (make-instance 'hunchentoot:easy-acceptor :port 8080)))</
----
Line 244 ⟶ 499:
Here's an example of doing everything manually
<
(defpackage :hello-web-manual (:use :cl :usocket))
(in-package :hello-web-manual)
Line 265 ⟶ 520:
(let ((connections (list (socket-listen "127.0.0.1" port :reuse-address t))))
(unwind-protect
(loop
(loop for ready in (wait-for-input connections :ready-only t)
do (
(let*
(read-all stream)
(format log-stream "Got message...~%")
(mapc (lambda (line) (ln line stream))
(list "HTTP/1.1 200 OK"
"Content-Type: text/plain; charset=UTF-8"
""
"Hello world!"))
(socket-close ready)
(setf connections (remove ready connections))))))
(loop for c in connections do (loop while (socket-close c))))))
(serve 8080)</
=={{header|Crystal}}==
<syntaxhighlight lang="crystal">
require "http/server"
server = HTTP::Server.new do |context|
context.response.print "Goodbye World"
end
server.listen(8080)
</syntaxhighlight>
=={{header|D}}==
Using sockets only, also shows use of heredoc syntax
''If you copy from this page, be careful with extraneous spaces on the empty lines in the heredoc''.
<syntaxhighlight lang="d">import std.socket, std.array;
ushort port = 8080;
Line 297 ⟶ 565:
Socket currSock;
while (
currSock.sendTo(replace(q"EOF
HTTP/1.1 200 OK
Line 303 ⟶ 571:
<html>
<head><title>Hello
<body>
</html>
EOF", "\n", "\r\n"));
Line 310 ⟶ 578:
}
}
</syntaxhighlight>
=={{header|Dart}}==
<
var server = await HttpServer.bind('
await for (HttpRequest request in server) {
..write('Hello, world')
..close();
}
}</syntaxhighlight>
=={{header|Delphi}}==
<
{$APPTYPE CONSOLE}
Line 372 ⟶ 643:
lWebServer.Free;
end;
end.</
=={{header|Dylan.NET|Dylan.NET}}==
<syntaxhighlight lang="dylan.net">
//compile with dylan.NET 11.
#refstdasm "mscorlib.dll"
#refstdasm "System.dll"
Line 389 ⟶ 660:
namespace WebServer
class public
method public static void main(var args as string[])
Line 412 ⟶ 683:
end namespace
</syntaxhighlight>
=={{header|Erlang}}==
Using builtin HTTP server with call back to do/1.
It only lasts 30 seconds (30000 milliseconds), then it is stopped.
I fail to see how a longer time will serve any purpose.
<syntaxhighlight lang="erlang">
-module( hello_world_web_server ).
Line 439 ⟶ 712:
timer:sleep( 30000 ),
httpd_stop( Pid ).
</syntaxhighlight>
=={{header|Fantom}}==
<
using wisp
Line 466 ⟶ 739:
while (true) {} // stay running
}
}</
=={{header|Fortran}}==
There is no network library in fortran. Use C interoperability and some C compatible library or just start node.js simple web server:
<syntaxhighlight lang="fortran">
program http_example
implicit none
character (len=:), allocatable :: code
character (len=:), allocatable :: command
logical :: waitForProcess
! Execute a Node.js code
code = "const http = require('http'); http.createServer((req, res) => &
{res.end('Hello World from a Node.js server started from Fortran!')}).listen(8080);"
command = 'node -e "' // code // '"'
call execute_command_line (command, wait=waitForProcess)
end program http_example
</syntaxhighlight>
=={{header|Free Pascal}}==
<syntaxhighlight lang="pascal">program HelloWorldServer;
{$mode objfpc}{$H+}
uses
Classes, fphttpserver;
Type
TTestHTTPServer = Class(TFPHTTPServer)
public
procedure HandleRequest(Var ARequest: TFPHTTPConnectionRequest;
Var AResponse : TFPHTTPConnectionResponse); override;
end;
Var
Serv : TTestHTTPServer;
procedure TTestHTTPServer.HandleRequest(var ARequest: TFPHTTPConnectionRequest;
var AResponse: TFPHTTPConnectionResponse);
Var
F : TStringStream;
begin
F:=TStringStream.Create('Hello,World!');
try
AResponse.ContentLength:=F.Size;
AResponse.ContentStream:=F;
AResponse.SendContent;
AResponse.ContentStream:=Nil;
finally
F.Free;
end;
end;
begin
Serv:=TTestHTTPServer.Create(Nil);
try
Serv.Threaded:=False;
Serv.Port:=8080;
Serv.AcceptIdleTimeout:=1000;
Serv.Active:=True;
finally
Serv.Free;
end;
end.</syntaxhighlight>
=={{header|Frink}}==
Frink has a web server platform that runs in a Java servlet container called [https://frinklang.org/fspdocs.html Frink Server Pages] which should be used for real-world applications. However, the following is a simple single-threaded web server for the purposes of this task.
<syntaxhighlight lang="frink">ss = newJava["java.net.ServerSocket", 8080]
while true
{
sock = ss.accept[];
w = new Writer[sock.getOutputStream[]]
w.println["HTTP/1.1 200 OK"]
w.println["Content-Type: text/plain\n"]
w.println["Goodbye, World!"]
w.close[]
}</syntaxhighlight>
=={{header|FunL}}==
<
native java.net.ServerSocket
Line 481 ⟶ 831:
PrintWriter( socket.getOutputStream(), true ).println( 'hello world' )
socket.shutdownOutput()
socket.close()</
=={{header|Gastona}}==
A minimal graphical user interface, a console, is included to allow
following the server activity and also being able to quit it by closing the window.
But it is not stritctly needed, just the unit #listix# would do the job.
<syntaxhighlight lang="gastona">#javaj#
<frames> oConsole
#listix#
<main>
MICOHTTP, START, myServer, 8080
<GET />
//<html><body>
// Goodbye world!
//</body></html>
</syntaxhighlight>
=={{header|Genie}}==
<syntaxhighlight lang="genie">/**
* Based on https://wiki.gnome.org/Projects/Genie/GIONetworkingSample
* Based on an example of Jezra Lickter http://hoof.jezra.net/snip/nV
*
* valac --pkg gio-2.0 --pkg gee-0.8 webserver.gs
* ./webserver
*/
[indent=8]
uses
GLib
Gee
init
var ws = new WebServer()
ws.run()
struct Request
full_request : string
path : string
query : string
struct Response
status_code : string
content_type : string
data : string
class WebServer
def run()
port : uint16 = 8080
tss : ThreadedSocketService = new ThreadedSocketService(100)
ia : InetAddress = new InetAddress.any(SocketFamily.IPV4)
isaddr : InetSocketAddress = new InetSocketAddress(ia, port)
try
tss.add_address(isaddr, SocketType.STREAM, SocketProtocol.TCP, null, null);
except e : Error
stderr.printf("%s\n", e.message)
return
// add connection handler
tss.run.connect( connection_handler )
ml : MainLoop = new MainLoop()
tss.start()
stdout.printf("Serving on port %d\n", port)
ml.run()
def connection_handler ( conn : SocketConnection ) : bool
first_line : string = ""
size : size_t = 0;
request : Request = Request()
dis : DataInputStream = new DataInputStream (conn.input_stream)
dos : DataOutputStream = new DataOutputStream (conn.output_stream)
try
first_line = dis.read_line(out size)
// here you could analyze request information
var parts = first_line.split(" ");
if parts.length > 1 do request.full_request = parts[1]
except e : Error
stderr.printf("%s\n", e.message)
response : Response = Response()
response.status_code = "HTTP/1.1 200 OK\n"
response.content_type = "text/html"
response.data = "<html><body><h1>Goodbye, World!</h1></body></html>"
serve_response ( response, dos )
return false
def serve_response ( response : Response, dos : DataOutputStream )
try
dos.put_string (response.status_code)
dos.put_string ("Server: Genie Socket\n")
dos.put_string("Content-Type: %s\n".printf(response.content_type))
dos.put_string("Content-Length: %d\n".printf(response.data.length))
dos.put_string("\n");//this is the end of the return headers
dos.put_string(response.data)
except e : Error
stderr.printf("%s\n", e.message)</syntaxhighlight>
{{out}}
<pre>prompt$ valac --pkg gio-2.0 --pkg gee-0.8 webserver.gs
prompt$ ./webserver
Serving on port 8080</pre>
Showing
<pre>prompt$ curl http://localhost:8080
<html><body><h1>Goodbye, World!</h1></body></html></pre>
=={{header|Go}}==
<
import (
Line 498 ⟶ 953:
log.Fatal(http.ListenAndServe(":8080", nil))
}
</syntaxhighlight>
=={{header|Haskell}}==
Lightweightly concurrent "hello world" web server
using the [http://www.yesodweb.com/book/conduits conduit] stack:
<
import Data.ByteString.Char8 ()
Line 512 ⟶ 968:
main :: IO ()
main = runTCPServer (ServerSettings 8080 "127.0.0.1") $ const (yield response $$)
where response = "HTTP/1.0 200 OK\nContent-Length: 16\n\nGoodbye, World!\n"</
Or using only "standard" features ([http://hackage.haskell.org/package/base base], [http://hackage.haskell.org/package/bytestring bytestring] and [http://hackage.haskell.org/package/network network] from the [http://hackage.haskell.org/platform/ Haskell Platform]):
<
import Data.ByteString.Char8 ()
Line 530 ⟶ 986:
loop s = forever $ forkIO . request . fst =<< accept s
request c = sendAll c response `finally` sClose c
response = "HTTP/1.0 200 OK\nContent-Length: 16\n\nGoodbye, World!\n"</
Both works like this:
Line 541 ⟶ 997:
Request rate: 8202.5 req/s (0.1 ms/req)
Errors: total 10000 client-timo 0 socket-timo 0 connrefused 0 connreset 10000
Or using warp ([http://hackage.haskell.org/package/warp warp] [https://wiki.haskell.org/Web/Servers#Warp warp example] [http://aosabook.org/en/posa/warp.html about warp]):
<syntaxhighlight lang="haskell">{-# LANGUAGE OverloadedStrings #-}
import Network.Wai
import Network.Wai.Handler.Warp
import Network.HTTP.Types (status200)
import Blaze.ByteString.Builder (copyByteString)
import qualified Data.ByteString.UTF8 as BU
import Data.Monoid
main = do
let port = 8080
putStrLn $ "Listening on port " ++ show port
run port app
app req respond = respond $
case pathInfo req of
x -> index x
index x = responseBuilder status200 [("Content-Type", "text/plain")] $ mconcat $ map copyByteString
[ "Hello World!\n" ]</syntaxhighlight>
Work like this:
$ curl http://localhost:8080/
Hello World!
#httperf --server localhost --port 8080 --num-conns 10000 --num-calls 100
Request rate: 43565.8 req/s (0.0 ms/req)
#httperf --server localhost --port 8080 --num-conns 100000 --num-calls 200
Request rate: 43902.9 req/s (0.0 ms/req)
without any errors
Comparing to [http://www.nginx.org/ nginx]:
Line 555 ⟶ 1,044:
=={{header|Io}}==
<syntaxhighlight lang="io">
WebRequest := Object clone do(
handleSocket := method(aSocket,
Line 571 ⟶ 1,060:
WebServer start
</syntaxhighlight>
=={{header|J}}==
If the desire is to use the browser as a gui, the easiest thing to do
would be to [http://www.jsoftware.com/stable.htm download] [http://www.jsoftware.com/docs/help701/user/relhigh.htm j7], edit the jhs script to start on port 8080,
start jhs, visit http://127.0.0.1:8080/jijx then enter the text:
<syntaxhighlight lang="j">'Goodbye, World!'</syntaxhighlight>
This will compute the desired result and display it (actually, it will be displayed twice since the original string will also be displayed).
This would be even simpler if you could just use the default jhs port (65001)...
Alternatively, a jhs form could be used (but this would not have the exact url structure specified).
However, if the desire is to implement the task exactly,
any of approaches at [[j:JWebServer]] might be used.
For example, here is a web server which ignores the client's request
and always returns Goodbye, World:
<syntaxhighlight lang="j">hello=: verb define
8080 hello y NB. try to use port 8080 by default
:
Line 607 ⟶ 1,102:
responseFor=: dyad define
'HTTP/1.0 200 OK',CRLF,'Content-Type: text/plain',CRLF,CRLF,'Goodbye, World!',CRLF
)</
To deploy this server, once it has been defined, run
<syntaxhighlight lang
This version works because reasonable http requests fit in a single tcp packet.
(And note that the server waits for one tcp packet before responding.)
If parsing of the request is desired, one of the more complicated implementations at [[j:JWebServer]] should be used instead (but that's not really relevant for this task, except perhaps to require complete headers before responding, with broken browsers which send multiple tcp packets for the request).
=={{header|Java}}==
Multiple requests will be served in the order that they reach the server,
with a queue size limit of 50 waiting requests imposed by default in the <code>ServerSocket</code> class (may be changed by adding a second positive integer argument to the <code>ServerSocket</code> constructor).
<syntaxhighlight lang="java">import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
Line 629 ⟶ 1,127:
}
}
}</
=={{header|JavaScript}}==
Line 635 ⟶ 1,133:
{{works with|Node.js}}
<
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Goodbye, World!\n');
}).listen(8080, '127.0.0.1');</
It scales:
Line 654 ⟶ 1,152:
with no errors.
=={{header|Jsish}}==
One wrinkle in this sample use of the Jsi_Websrv module that ships with Jsi. A request needs ''page'' and not just the port.
{{out}}
<pre>prompt$ jsish
# require('Jsi_Websrv');
1.01
# Jsi_Websrv('', {server:true, port:8080, pageStr:'Goodbye, World!'});
...other terminal...
prompt$ curl http://localhost:8080/page
Goodbye, World!prompt$ curl http://localhost:8080/page
Goodbye, World!</pre>
=={{header|Julia}}==
Requires the HttpServer package to have previously been installed with 'Pkg.add("HttpServer")'
<syntaxhighlight lang="julia">using HttpServer
server = Server() do req, res
"Goodbye, World!"
end
run(server, 8080)
</syntaxhighlight>
=={{header|Kotlin}}==
{{trans|Java}}
<syntaxhighlight lang="scala">import java.io.PrintWriter
import java.net.ServerSocket
fun main(args: Array<String>) {
val listener = ServerSocket(8080)
while(true) {
val sock = listener.accept()
PrintWriter(sock.outputStream, true).println("Goodbye, World!")
sock.close()
}
}</syntaxhighlight>
=={{header|Lasso}}==
While Lasso has a built-in webserver you can use,
here's how you can create a basic multi-threaded webserver
of your own to complete this request:
<syntaxhighlight lang="lasso">local(server) = net_tcp
handle => { #server->close }
#server->bind(8080) & listen & forEachAccept => {
Line 676 ⟶ 1,214:
#con->writeBytes(bytes(#response))
}
}</
=={{header|Liberty BASIC}}==
This is difficult, although possible, in Liberty BASIC,
but it's close relative ''Run BASIC'' is designed for serving webpages easily.
The task becomes simply ..
<syntaxhighlight lang="lb">print "hello world!" </syntaxhighlight>
=={{header|Lua}}==
{{works with|lua|5.2.4}}
{{libheader|LuaSocket}}
<syntaxhighlight lang="lua">local socket = require "socket"
local headers = "HTTP/1.1 200 OK\r\nContent-Type: text/html; charset=UTF-8\r\nContent-Length: %d\r\n\r\n%s"
local content = "<!doctype html><html><title>Goodbye, World!</title><h1>Goodbye, World!"
local server = assert(socket.bind("localhost", 8080))
repeat
local client = server:accept()
local ok = client:send(string.format(headers, #content, content))
client:close()
until not client or not ok
server:close()</syntaxhighlight>
=={{header|Mathematica}}/{{header|Wolfram Language}}==
<syntaxhighlight lang="mathematica">listener =
SocketListen["127.0.0.1:8080",
Function[{assoc},
With[{client = assoc["SourceSocket"]},
WriteString[client,
"HTTP/1.0 200 OK\nContent-Length: 16\n\nGoodbye, World!\n"];
Close[client]]]]
SystemOpen["http://127.0.0.1:8080"]</syntaxhighlight>
Clean up:
<syntaxhighlight lang="mathematica">DeleteObject[listener];
Close[listener["Socket"]]</syntaxhighlight>
=={{header|min}}==
{{works with|min|0.37.0}}
<syntaxhighlight lang="min">{
(
{
{"text/plain; charset=utf-8" :content-type} :headers
"Goodbye, World!" :body
}
) :handler
8080 :port
} start-server</syntaxhighlight>
=={{header|Modula-2}}==
This is a CGI executable:
<syntaxhighlight lang="text">
MODULE access;
Line 696 ⟶ 1,275:
WriteLn
END access.
</syntaxhighlight>
=={{header|NetRexx}}==
{{Trans|Java}}
<
options replace format comments java crossref symbols binary
Line 737 ⟶ 1,316:
end listener
return
</syntaxhighlight>
=={{header|
<syntaxhighlight lang="nim">import asynchttpserver, asyncdispatch
proc
asyncCheck newAsyncHttpServer().serve(Port(8080), cb)
runForever()
</syntaxhighlight>
=={{header|Objeck}}==
<
use Net;
use Concurrency;
Line 768 ⟶ 1,348:
}
}
</syntaxhighlight>
=={{header|OCaml}}==
This code is derived from this [http://ocamlunix.forge.ocamlcore.org/sockets.html#htoc54 ocaml-unix documentation].
<
let res = try f x with e -> finally y; raise e in
finally y;
Line 828 ⟶ 1,408:
let _ =
Unix.handle_unix_error server ()</
=={{header|Ol}}==
This sample sends 200 OK on any request and echoes the request headers.
<syntaxhighlight lang="ol">(import (lib http))
(http:run 8080 (lambda (fd request headers send close)
(send "HTTP/1.0 200 OK\n"
"Connection: close\n"
"Content-Type: text/html; charset=UTF-8\n"
"Server: " (car *version*) "/" (cdr *version*)
"\n\n"
"<h1>Goodbye, World!</h1>"
(ref request 1) ": " (ref request 2)
"<hr><small>" headers "</small>")
(close #t)
))
</syntaxhighlight>
=={{header|Opa}}==
From [http://doc.opalang.org/index.html#_a_first_peek_at_opa Opa documentation]:
<
Compile and run:
<syntaxhighlight lang
=={{header|Panda}}==
Using the command line client. Listen to port 8080. For each request a request object is returned, we ignore this and just use it to send message which will be the response.
<syntaxhighlight lang="panda">8080.port.listen.say("Hello world!")</syntaxhighlight>
=={{header|Perl}}==
<
my $port = 8080;
Line 861 ⟶ 1,464:
"<html><head><title>Goodbye, world!</title></head><body>Goodbye, world!</body></html>\r\n";
close CLIENT;
}</
Various modules exist for using sockets, including the popular IO::Socket
which provides a simpler and more friendly OO interface for the socket layer.
Here is the solution using this module:
{{libheader|IO::Socket::INET}}
<
my $sock = new IO::Socket::INET ( LocalAddr => "127.0.0.1:8080",
Line 875 ⟶ 1,480:
"<html><head><title>Goodbye, world!</title></head><body>Goodbye, world!</body></html>\r\n";
close $client;
}</
Using Perl's glue power, provide a note
with visitor counter via netcat:
<syntaxhighlight lang="perl">while (++(our $vn)) {
open NC, "|-", qw(nc -l -p 8080 -q 1);
print NC "HTTP/1.0 200 OK\xd\xa",
"Content-type: text/plain; charset=utf-8\
"Goodbye, World! (hello, visitor No. $vn!)\
}</
Here's another solution using Plack (may be found on CPAN):
<
my $app = sub {
return [ 200,
Line 893 ⟶ 1,501:
my $runner = Plack::Runner->new;
$runner->parse_options('--host' => 'localhost', '--port' => 8080);
$runner->run($app);</
When using plackup, then this may be compressed to one line:
<
Use <
=={{header|
Windows only for now (should be relatively straightforward to get it working on linux)<br>
Output as C, code is however a translation of a FASM example.
<!--<syntaxhighlight lang="phix">(notonline)-->
<span style="color: #000080;font-style:italic;">-- demo\rosetta\SimpleHttpServer.exw</span>
<span style="color: #008080;">without</span> <span style="color: #008080;">js</span>
<span style="color: #008080;">include</span> <span style="color: #000000;">builtins</span><span style="color: #0000FF;">\</span><span style="color: #000000;">sockets</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span>
<span style="color: #008080;">constant</span> <span style="color: #000000;">MAX_QUEUE</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">100</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">ESCAPE</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">#1B</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">response</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">substitute</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"""
HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
<!DOCTYPE html>
<html>
<head>
<title>Bye-bye baby bye-bye</title>
<style>
body { background-color: #111 }
h1 { font-size:4cm; text-align: center; color: black;
text-shadow: 0 0 2mm red}
</style>
</head>
<body>
<h1>Goodbye, world!</h1>
</body>
</html>
"""</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\r\n"</span><span style="color: #0000FF;">)</span>
<span style="color: #7060A8;">puts</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"server started, open http://localhost:8080/ in browser or curl, press Esc or Q to quit\n"</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">sock</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">socket</span><span style="color: #0000FF;">(</span><span style="color: #000000;">AF_INET</span><span style="color: #0000FF;">,</span><span style="color: #000000;">SOCK_STREAM</span><span style="color: #0000FF;">,</span><span style="color: #004600;">NULL</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">pSockAddr</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sockaddr_in</span><span style="color: #0000FF;">(</span><span style="color: #000000;">AF_INET</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">""</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">8080</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">if</span> <span style="color: #7060A8;">bind</span><span style="color: #0000FF;">(</span><span style="color: #000000;">sock</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">pSockAddr</span><span style="color: #0000FF;">)=</span><span style="color: #000000;">SOCKET_ERROR</span> <span style="color: #008080;">then</span> <span style="color: #7060A8;">crash</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"bind (%v)"</span><span style="color: #0000FF;">,{</span><span style="color: #7060A8;">get_socket_error</span><span style="color: #0000FF;">()})</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">if</span> <span style="color: #7060A8;">listen</span><span style="color: #0000FF;">(</span><span style="color: #000000;">sock</span><span style="color: #0000FF;">,</span><span style="color: #000000;">MAX_QUEUE</span><span style="color: #0000FF;">)=</span><span style="color: #000000;">SOCKET_ERROR</span> <span style="color: #008080;">then</span> <span style="color: #7060A8;">crash</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"listen (%v)"</span><span style="color: #0000FF;">,{</span><span style="color: #7060A8;">get_socket_error</span><span style="color: #0000FF;">()})</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">while</span> <span style="color: #008080;">not</span> <span style="color: #7060A8;">find</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">get_key</span><span style="color: #0000FF;">(),{</span><span style="color: #000000;">ESCAPE</span><span style="color: #0000FF;">,</span><span style="color: #008000;">'q'</span><span style="color: #0000FF;">,</span><span style="color: #008000;">'Q'</span><span style="color: #0000FF;">})</span> <span style="color: #008080;">do</span>
<span style="color: #0000FF;">{</span><span style="color: #004080;">integer</span> <span style="color: #000000;">code</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">select</span><span style="color: #0000FF;">({</span><span style="color: #000000;">sock</span><span style="color: #0000FF;">},{},{},</span><span style="color: #000000;">250000</span><span style="color: #0000FF;">)</span> <span style="color: #000080;font-style:italic;">-- (0.25s)</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">code</span><span style="color: #0000FF;">=</span><span style="color: #000000;">SOCKET_ERROR</span> <span style="color: #008080;">then</span> <span style="color: #7060A8;">crash</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"select (%v)"</span><span style="color: #0000FF;">,{</span><span style="color: #7060A8;">get_socket_error</span><span style="color: #0000FF;">()})</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">code</span><span style="color: #0000FF;">></span><span style="color: #000000;">0</span> <span style="color: #008080;">then</span> <span style="color: #000080;font-style:italic;">-- (not timeout)</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">peer</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">accept</span><span style="color: #0000FF;">(</span><span style="color: #000000;">sock</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">ip</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">getsockaddr</span><span style="color: #0000FF;">(</span><span style="color: #000000;">peer</span><span style="color: #0000FF;">)</span>
<span style="color: #0000FF;">{</span><span style="color: #004080;">integer</span> <span style="color: #000000;">len</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">string</span> <span style="color: #000000;">request</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">recv</span><span style="color: #0000FF;">(</span><span style="color: #000000;">peer</span><span style="color: #0000FF;">)</span>
<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"Client IP: %s\n%s\n"</span><span style="color: #0000FF;">,{</span><span style="color: #7060A8;">ip_to_string</span><span style="color: #0000FF;">(</span><span style="color: #000000;">ip</span><span style="color: #0000FF;">),</span><span style="color: #000000;">request</span><span style="color: #0000FF;">})</span>
<span style="color: #008080;">if</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">request</span><span style="color: #0000FF;">)></span><span style="color: #000000;">3</span> <span style="color: #008080;">and</span> <span style="color: #000000;">request</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">..</span><span style="color: #000000;">4</span><span style="color: #0000FF;">]=</span><span style="color: #008000;">"GET "</span> <span style="color: #008080;">then</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">bytes_sent</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">send</span><span style="color: #0000FF;">(</span><span style="color: #000000;">peer</span><span style="color: #0000FF;">,</span><span style="color: #000000;">response</span><span style="color: #0000FF;">)</span>
<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"%d bytes successfully sent\n"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">bytes_sent</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #7060A8;">shutdown</span><span style="color: #0000FF;">(</span><span style="color: #000000;">peer</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">SD_SEND</span><span style="color: #0000FF;">)</span> <span style="color: #000080;font-style:italic;">-- tell curl it's over</span>
<span style="color: #000000;">peer</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">closesocket</span><span style="color: #0000FF;">(</span><span style="color: #000000;">peer</span><span style="color: #0000FF;">)</span> <span style="color: #000080;font-style:italic;">-- (as does this)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">while</span>
<span style="color: #000000;">sock</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">closesocket</span><span style="color: #0000FF;">(</span><span style="color: #000000;">sock</span><span style="color: #0000FF;">)</span>
<span style="color: #7060A8;">WSACleanup</span><span style="color: #0000FF;">()</span>
<!--</syntaxhighlight>-->
{{Out}}
Server console, once you have opened http://localhost:8080 in your browser, or run curl http://localhost:8080
<pre>
server started, open http://localhost:8080/ in browser or curl, press Esc or Q to quit
Client IP: 127.0.0.1
GET / HTTP/1.1
Host: localhost:8080
User-Agent: curl/7.55.1
Accept: */*
352 bytes successfully sent
</pre>
=={{header|PHP}}==
<syntaxhighlight lang="php"><?php
// AF_INET6 for IPv6 // IP
$socket = socket_create(AF_INET, SOCK_STREAM, 0) or die('Failed to create socket!');
// '127.0.0.1' to limit only to localhost // Port
socket_bind($socket, 0, 8080);
socket_listen($socket);
$msg = '<html><head><title>Goodbye, world!</title></head><body>Goodbye, world!</body></html>';
for (;;) {
// @ is used to stop PHP from spamming with error messages if there is no connection
if ($client = @socket_accept($socket)) {
socket_write($client, "HTTP/1.1 200 OK\r\n" .
"Content-length: " . strlen($msg) . "\r\n" .
"Content-Type: text/html; charset=UTF-8\r\n\r\n" .
$msg);
}
else usleep(100000); // limits CPU usage by sleeping after doing every request
}
?></syntaxhighlight>
=={{header|PicoLisp}}==
Contents of the file "goodbye.l":
<
"Goodbye, World!" )</
Start server:
<pre>$ pil @lib/http.l @lib/xhtml.l -'server 8080 "goodbye.l"' -wait</pre>
=={{header|Pike}}==
<syntaxhighlight lang="pike">
void handle_request(Protocols.HTTP.Server.Request request)
{
request->response_and_finish( ([ "data":"Goodbye, World!",
"type":"text/html" ]) );
}
int main()
{
Protocols.HTTP.Server.Port(handle_request, 8080);
return -1; // -1 is a special case that retirns control to the backend
}
</syntaxhighlight>
=={{header|Pony}}==
Using only in-built TCP listeners, not the HTTP server package
<syntaxhighlight lang="pony">
use "net"
actor Main
new create(env: Env) =>
try TCPListener(env.root as AmbientAuth,
Listener,
"127.0.0.1", "8080")
else env.err.print("unable to use the network")
end
// Boilerplate code, create a TCP listener on a socket
class Listener is TCPListenNotify
new iso create() => None
fun ref listening(_: TCPListener ref) => None
fun ref not_listening(listen: TCPListener ref) => listen.close()
fun ref connected(listen: TCPListener ref): TCPConnectionNotify iso^ =>
Server
// HTTP server that handles the TCP connections
class val Server is TCPConnectionNotify
// Empty ctor
new iso create() => None
// Impl for when server accepts the client request
fun accepted(_: TCPConnection ref) => None
// Impl for when server receives client data
fun ref received(conn: TCPConnection ref, _: Array[U8] iso, _: USize)
: Bool
=>
// handle request
conn.write("HTTP/1.1 200 OK\r\n\r\n")
conn.write("<html><body><p>")
conn.write("Goodbye, World!")
conn.write("</p></body></html>")
conn.dispose()
false
// Impl for when client closes the connection
fun ref closed(conn: TCPConnection ref) => conn.dispose()
// Impl for when client fails to connect to all possible addresses for the server
fun ref connect_failed(_: TCPConnection ref) => None
</syntaxhighlight>
=={{header|Prolog}}==
Line 919 ⟶ 1,677:
{{works with|YAP}}
<
:- use_module(library(http/thread_httpd)).
:- use_module(library(http/http_dispatch)).
Line 936 ⟶ 1,694:
% wrapped in <h1></h1> tags, "Goodbye, World!".
say_goodbye(_Request) :- reply_html_page([title('Howdy')],
[h1('Goodbye, World!')]).</
=={{header|PureBasic}}==
<
MessageRequester("Error", "Can't initialize the network !")
End
Line 961 ⟶ 1,719:
Else
MessageRequester("Error", "Can't create the server (port in use ?).")
EndIf</
=={{header|
Using the <code>wsgiref.simple_server</code> module (Python < 3.2).
<syntaxhighlight lang="python">from wsgiref.simple_server import make_server
def app(environ, start_response):
start_response('200 OK', [('Content-Type','text/html')])
yield b"<h1>Goodbye, World!</h1>"
server = make_server('127.0.0.1', 8080, app)
server.serve_forever()</syntaxhighlight>
Using the <code>http.server</code> module (Python 3).
<syntaxhighlight lang="python">import threading
from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
class HelloHTTPRequestHandler(BaseHTTPRequestHandler):
message = 'Hello World! 今日は'
def do_GET(self):
self.send_response(200)
self.send_header('Content-type', 'text/html; charset=UTF-8')
self.end_headers()
self.wfile.write(self.message.encode('utf-8'))
self.close_connection = True
def serve(addr, port):
with ThreadingHTTPServer((addr, port), HelloHTTPRequestHandler) as server:
server.serve_forever(poll_interval=None)
if __name__ == '__main__':
addr,
threading.Thread(target=serve, args=(addr, port), daemon=True).start()
try:
while True:
# handle Ctrl+C
input()
except KeyboardInterrupt:
pass
</syntaxhighlight>
=={{header|R}}==
<syntaxhighlight lang="rsplus">
library(httpuv)
runServer("0.0.0.0", 5000,
list(
call = function(req) {
list(status = 200L, headers = list('Content-Type' = 'text/html'), body = "Hello world!")
}
)
)
</syntaxhighlight>
=={{header|Racket}}==
<
#lang racket
(require web-server/servlet web-server/servlet-env)
(define (start req) (response/xexpr "Goodbye, World!"))
(serve/servlet start #:port 8080 #:servlet-path "/")
</syntaxhighlight>
=={{header|Raku}}==
(formerly Perl 6)
{{works with|Rakudo}}
<syntaxhighlight lang="raku" line>my $listen = IO::Socket::INET.new(:listen, :localhost<localhost>, :localport(8080));
loop {
my $conn = $listen.accept;
my $req = $conn.get ;
$conn.print: "HTTP/1.0 200 OK\r\nContent-Type: text/plain; charset=UTF-8\r\n\r\nGoodbye, World!\r\n";
$conn.close;
}</syntaxhighlight>
Async:
<syntaxhighlight lang="raku" line>react {
whenever IO::Socket::Async.listen('0.0.0.0', 8080) -> $conn {
whenever $conn.Supply.lines -> $line {
$conn.print: "HTTP/1.0 200 OK\r\nContent-Type: text/plain; charset=UTF-8\r\n\r\nGoodbye, World!\r\n";
$conn.close;
}
}
}</syntaxhighlight>
=={{header|REALbasic}}==
<syntaxhighlight lang="vb">
Class HTTPSock
Inherits TCPSocket
Line 1,039 ⟶ 1,851:
End Sub
End Class
</syntaxhighlight>
=={{header|REXX}}==
Based on the UNIX Shell entry. Works with Regina, tested on GNU/Linux. Requires netcat as nc.
<syntaxhighlight lang="rexx">/* HTTP hello server */
response.1 = 'HTTP/1.1 200 OK' || '0D0A'X,
|| 'Connection: close' || '0D0A'X,
|| 'Content-Type: text/html' || '0D0A0D0A'X
response.2 = '<!DOCTYPE html>' || '0A'X,
|| '<html><head><title>Hello, Rosetta</title></head>' || '0A'X,
|| '<body><h2>Goodbye, World!</h2></body>' || '0A'X,
|| '<!-- Shout out from the Rosetta Code programming chrestomathy --></html>' || '0A'X
DO FOREVER
ADDRESS SYSTEM 'nc -l 8080' WITH INPUT STEM response.
END</syntaxhighlight>
=={{header|Ring}}==
<syntaxhighlight lang="ring">
Load "guilib.ring"
cResponse = "HTTP/1.1 200 OK\r\n" +
"Content-Type: text/html\r\n\r\n" +
"<html><head><title>Goodbye, world!</title></head>" +
"<body>Goodbye, world!</body></html>"
cResponse = substr(cResponse,"\r\n",char(13)+char(10))
new qApp {
oServer = new Server { Server() }
exec()
}
Class Server
win1 lineedit1
oTcpServer oTcpClient
cOutput = ""
func server
win1 = new qwidget()
lineedit1 = new qtextedit(win1) {
setGeometry(150,50,200,300)
}
win1 {
setwindowtitle("Server")
setgeometry(450,100,400,400)
show()
}
oTcpServer = new qTcpServer(win1) {
setNewConnectionEvent("oServer.pNewConnection()")
oHostAddress = new qHostAddress()
oHostAddress.SetAddress("127.0.0.1")
listen(oHostAddress,8080)
}
cOutput = "Server Started" + nl +
"listen to port 8080" + nl
lineedit1.settext(cOutput)
Func pNewConnection
oTcpClient = oTcpServer.nextPendingConnection()
while not oTcpClient.waitForReadyRead(100) end
cOutput += "Accept Connection" + nl
lineedit1.settext(cOutput)
oTcpClient {
write(cResponse,len(cResponse))
flush()
waitforbyteswritten(300000)
close()
}
</syntaxhighlight>
=={{header|Ruby}}==
Using the WEBrick module from Ruby's standard library.
<
server = WEBrick::HTTPServer.new(:Port => 8080)
server.mount_proc('/') {|request, response| response.body = "Goodbye, World!"}
trap("INT") {server.shutdown}
server.start</
Same code without <code>trap</code>, in a single statement using <code>tap</code>.
<syntaxhighlight lang="ruby">require 'webrick'
WEBrick::HTTPServer.new(:Port => 80).tap {|srv|
srv.mount_proc('/') {|request, response| response.body = "Goodbye, World!"}
}.start</syntaxhighlight>
Using the [http://www.sinatrarb.com/ sinatra] gem:
<
get("/") { "Goodbye, World!" }</
=={{header|Run BASIC}}==
<
=={{header|Rust}}==
Basically no error handling. This web server will simply panic if there is any sort of error.
<syntaxhighlight lang
use std::
use std::io::
const RESPONSE: &'static [u8] = b"HTTP/1.1 200 OK\r
Content-Type: text/html; charset=UTF-8\r\n\r
<!DOCTYPE html><html><head><title>Bye-bye baby bye-bye</title>
<style>body { background-color: #111 }
h1 { font-size:4cm; text-align: center; color: black;
text-shadow: 0 0 2mm red}</style></head>
<body><h1>Goodbye, world!</h1></body></html>\r";
fn main() {
let listener = TcpListener::bind("127.0.0.1:8080").unwrap();
for stream in listener.incoming() {
thread::spawn(move || {
let mut stream = stream.unwrap();
match stream.write(RESPONSE) {
Ok(_) => println!("Response sent!"),
Err(e) => println!("Failed sending response: {}!", e),
}
stream.shutdown(Shutdown::Write).unwrap();
});
}
}
</syntaxhighlight>
=={{header|Rye}}==
<syntaxhighlight lang="clojure">rye .needs { http }
new-server ":8080"
|handle "/" fn { r w } { write w "Goodbye, World!" }
|serve</syntaxhighlight>
=={{header|Salmon}}==
<syntaxhighlight lang="salmon">use "http.salm" : "http.si";
/* Don't do any logging. */
procedure log(...) { };
simple_http_server(8080, procedure(header, connection)
{ respond_text(connection, "Goodbye, World!"); });</syntaxhighlight>
=={{header|Scala}}==
{{libheader|Scala}}
{{Trans|Java}}It shows that Scala can simply embed XML fragments.
<
import java.net.ServerSocket
Line 1,112 ⟶ 2,024:
sock.close()
}
}</
=={{header|Seed7}}==
The code below was inspired by the example code for the function [http://seed7.sourceforge.net/libraries/listener.htm#openInetListener%28in_integer%29 openInetListener].
<
include "listener.s7i";
Line 1,144 ⟶ 2,047:
close(sock);
end while;
end func;</
=={{header|Sidef}}==
Using the low-level ''Socket'' object:
<syntaxhighlight lang="ruby">var port = 8080;
var protocol = Socket.getprotobyname("tcp");
var sock = (Socket.open(Socket.PF_INET, Socket.SOCK_STREAM, protocol) || die "couldn't open a socket: #{$!}");
# PF_INET to indicate that this socket will connect to the internet domain
# SOCK_STREAM indicates a TCP stream, SOCK_DGRAM would indicate UDP communication
sock.setsockopt(Socket.SOL_SOCKET, Socket.SO_REUSEADDR, 1) || die "couldn't set socket options: #{$!}";
# SOL_SOCKET to indicate that we are setting an option on the socket instead of the protocol
# mark the socket reusable
sock.bind(Socket.sockaddr_in(port, Socket.INADDR_ANY)) || die "couldn't bind socket to port #{port}: #{$!}";
# bind our socket to $port, allowing any IP to connect
sock.listen(Socket.SOMAXCONN) || die "couldn't listen to port #{port}: #{$!}";
# start listening for incoming connections
while (var client = sock.accept) {
client.print ("HTTP/1.1 200 OK\r\n" +
"Content-Type: text/html; charset=UTF-8\r\n\r\n" +
"<html><head><title>Goodbye, world!</title></head>" +
"<body>Goodbye, world!</body></html>\r\n");
client.close;
}</syntaxhighlight>
A more friendly interface, using the ''IO::Socket::INET'' library:
<syntaxhighlight lang="ruby">var inet = require('IO::Socket::INET');
var sock = inet.new( LocalAddr => "127.0.0.1:8080",
Listen => 1,
Reuse => 1,
);
while (var client = sock.accept) {
client.print ("HTTP/1.1 200 OK\r\n" +
"Content-Type: text/html; charset=UTF-8\r\n\r\n" +
"<html><head><title>Goodbye, world!</title></head>" +
"<body>Goodbye, world!</body></html>\r\n");
client.close;
}</syntaxhighlight>
=={{header|Smalltalk}}==
{{works with|Smalltalk/X}}
starting server:
<
|myServer service|
Line 1,162 ⟶ 2,109:
service linkNames:#('/' ).
service registerServiceOn: myServer.
myServer start.</
Be aware that the above is an ad-hoc minimal scripting example.
Normally, a service subclass is used and
response handlers are defined as methods of it (not as action blocks).
Also, services and HTML generation is usually done using a framework
(at least DOM-based, but usually a higher level toolkit).
Especially take a look at smalltalk frameworks like Aida, Seaside, VisualWave etc.
===Pharo Smalltalk===
Pharo ships with the Zinc HTTP Component frameworks
that includes a ZnServer class.
Here's the simplest solution to start a web server:
<syntaxhighlight lang="smalltalk">(ZnServer startDefaultOn: 1701)
onRequestRespond: [ :request |
ZnResponse ok: (ZnEntity text: 'Hello World!') ].</syntaxhighlight>
To stop the server, use the following:
<syntaxhighlight lang="smalltalk">ZnServer stopDefault.</syntaxhighlight>
=={{header|Standard ML}}==
<syntaxhighlight lang="standard ml">
val txt = Word8VectorSlice.full (Byte.stringToBytes "hello world!" ) ;
fun serve listener portnr =
let
fun next () =
let
val (conn, conn_addr) = Socket.accept listener
in
case Posix.Process.fork () of
NONE =>
(
Socket.sendVec(conn, txt); Socket.close conn ;
OS.Process.exit OS.Process.success
)
| _ =>
(
Socket.close conn ;next ()
)
end
in (
Socket.Ctl.setREUSEADDR(listener, true);
Socket.bind(listener, INetSock.any portnr );
Socket.listen(listener, 9);
next ()
)
end handle x => (Socket.close listener; raise x)
;
</syntaxhighlight>
call - smlnj interpreter
- serve (INetSock.TCP.socket()) 8080 ;
result - shell
shell$ wget 127.0.0.1:8080
--2020-03-26 16:11:15-- htt p://127.0.0.1:8080/
Connecting to 127.0.0.1:8080... connected.
HTTP request sent, awaiting response... 200 No headers, assuming HTTP/0.9
Length: unspecified
Saving to: 'index.html'
index.html [ <=> ] 12 --.-KB/s in 0s
2020-03-26 16:11:15 (721 KB/s) - 'index.html' saved [12]
shell$ cat index.html
hello world!
=={{header|Tcl}}==
===Tcl 8.x===
This version is adapted from [http://wiki.tcl.tk/28414 the Tcler's Wiki].
<
while {[gets $chan] ne ""} {}
puts $chan "HTTP/1.1 200 OK\nConnection: close\nContent-Type: text/plain\n"
Line 1,189 ⟶ 2,182:
}
socket -server accept 8080
vwait forever</
===Jim Tcl===
Jim is a small footprint reimplementation of Tcl with modern features.
<
$s readable {
set client [$s accept]
Line 1,199 ⟶ 2,193:
$client close
}
vwait done</
=={{header|UNIX Shell}}==
<
=={{header|Wart}}==
<
accepting client :from socket
making stdout outfile+fd.client
Line 1,213 ⟶ 2,207:
prn "Content-type: text/plain"
prn ""
prn "Hello, world!"</
=={{header|Wren}}==
{{libheader|SpiderWren}}
<syntaxhighlight lang="wren">import "web" for Routes, App
Routes.GET("/") {
return "Goodbye, World!"
}
App.run(8080)</syntaxhighlight>
=={{header|X86-64 Assembly}}==
===UASM 2.52===
This SHOULD assemble on both Linux and Windows.
(Tested on Arch, Don't have windows installed atm :[)
<syntaxhighlight lang="asm">
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Crossplatform(?) Web Server example using UASM's OO Language extention
;;
;; Linux Build:
;; $ uasm -elf64 websrv.asm
;; $ gcc -o websrv websrv.o -no-pie
;; With MUSL libc
;; $ musl-gcc -o websrv websrv.o -e main -nostartfiles -no-pie
;;
;; Windows Build:
;; $ uasm64 -win64 websrv.asm
;; $ link /machine:x64 /subsystem:console /release websrv.obj
;; kernel32.lib msvcrt.lib ws2_32.lib
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
option casemap:none
option literals:on ;; Usually on by default buuuuuut...
WIN64 equ 1
LIN64 equ 3
ifndef __WEBSRV_CLASS__
__WEBSERV_CLASS__ equ 1
AF_INET equ 2
SOCK_STREAM equ 1
INADDR_ANY equ 0
in_addr struct
s_addr dd ?
in_addr ends
sockaddr struct
sa_family dw ?
sa_data db 14 dup (?)
sockaddr ends
sockaddr_in struct
sin_family dw ?
sin_port dw ?
sin_addr in_addr <?>
sin_zero db 8 dup (?)
sockaddr_in ends
WSADATA struct
wVersion dw ?
wHighVersion dw ?
iMaxSockets dw ?
iMaxUdpDg dw ?
szDescription db 256 dup (?)
szSystemStatus db 128 dup (?)
lpVendorInfo dq ?
WSADATA ends
;; Platform specific requirements etc..
if @Platform eq WIN64
;;include/includelibs can be used here. But this works too.
option dllimport:<kernel32>
ExitProcess proto ucode:dword
HeapAlloc proto fd:qword, flgs:dword, hlen:qword
HeapFree proto fd:qword, flgs:dword, lpmem:qword
GetProcessHeap proto
option dllimport:<msvcrt>
printf proto fmt:qword, args:VARARG
strlen proto buff:qword
option dllimport:<ws2_32>
WSAStartup proto ver:word, wsa:qword
WSACleanup proto wsa:qword
closesocket proto fd:dword
socket proto d:dword, s:dword, prtl:dword
bind proto fd:dword, saddr:qword, slen:dword
listen proto fd:dword, blog:dword
accept proto fd:dword, caddr:qword, slen:qword
send proto fd:dword, buff:qword, blen:dword, flgs:dword
option dllimport:none
exit equ ExitProcess
close equ closesocket
elseif @Platform eq LIN64
;; Required proto from Libc stuff.
malloc proto SYSTEMV mem:qword ;; Required by the class macros.
free proto SYSTEMV mem:qword ;; It uses HeapAlloc on windows.
printf proto SYSTEMV fmt:qword, args:VARARG
strlen proto SYSTEMV buff:qword
socket proto SYSTEMV d:dword, s:dword, prtl:dword
bind proto SYSTEMV fd:dword, saddr:qword, slen:dword
listen proto SYSTEMV fd:dword, blog:dword
accept proto SYSTEMV fd:dword, saddr:qword, slen:qword
send proto SYSTEMV fd:dword, buff:qword, blen:dword, flgs:dword
close proto SYSTEMV fd:dword
exit proto SYSTEMV uexit:dword
else
;; Could do some OSX or w/e specific crap, but I don't use
;; a Mac so, I dunno shit about it's API :]
endif
;; Class definitions etc..
CLASS websrv
;; Class Method definitions
CMETHOD serve
ENDMETHODS
;; Class Variables.
if @Platform eq WIN64
wsa WSADATA <?>
endif
tmpl db "[websrv->%s] - %s",10,0
http db "HTTP/1.1 200 OK",13,10,
"Content-Type: text/html; charset=UTF-8",13,10,13,10,
"<html><head><title>Goodbye</title></head><body>Goodbye, World!</body></html>",0
sock dd 0
port dw 8080
ENDCLASS
pwebsrv typedef ptr websrv
;; Method implementation..
; Syntax:
; METHOD ClassName, MethodName, <ReturnType>, <USE extra regs for ret>, args..
METHOD websrv, Init, <VOIDARG>, <>
local x:sockaddr_in
mov rbx, thisPtr ;; Force the ThisPtr reference reg to be RBX 'cause of windoze
assume rbx:ptr websrv ;; its default is RCX, and RDI on linux. *shrugs*
invoke printf, addr [rbx].tmpl,CSTR("init"), CSTR("Starting...")
if @Platform eq WIN64
invoke WSAStartup, 200h, addr [rbx].wsa
endif
invoke socket, AF_INET, SOCK_STREAM, 0
.if rax == -1
invoke printf, addr [rbx].tmpl, CSTR("init:ERROR"), CSTR("Socket() returned < 0")
mov rax, rbx
ret
.endif
mov [rbx].sock, eax
invoke printf, CSTR("[websrv->init:socket] - %d",10), eax
mov x.sin_family, AF_INET
mov x.sin_addr.s_addr, INADDR_ANY
mov ax, [rbx].port
xchg al,ah
mov x.sin_port, ax
invoke bind, [rbx].sock, addr x, sizeof(x)
.if eax == -1
invoke printf, addr [rbx].tmpl, CSTR("init:ERROR") , CSTR("Bind failed.")
xor eax, eax
mov [rbx].sock, 0
mov rax, rbx
ret
.endif
invoke printf, addr [rbx].tmpl, CSTR("init"), CSTR("Bind successful.")
mov rax, rbx
assume rbx: nothing
ret
ENDMETHOD
METHOD websrv, serve, <VOIDARG>, <>
local tmp:qword
local cfd:dword
local x:sockaddr
mov rbx, thisPtr
assume rbx:ptr websrv
.if [rbx].sock == 0
ret
.endif
invoke printf, addr [rbx].tmpl,CSTR("serve"), CSTR("Listening for incomming connections")
invoke listen, [rbx].sock, 5
.if rax == -1
invoke printf, addr [rbx].tmpl, CSTR("serve:ERROR"), CSTR("Listen() returned -1")
ret
.endif
.while(1)
mov tmp, sizeof(x)
invoke accept, [rbx].sock, addr x, addr tmp
.if eax == -1
invoke printf, addr [rbx].tmpl, CSTR("serve:ERROR"), CSTR("Accept() returned -1")
ret
.endif
mov cfd, eax
invoke printf, addr [rbx].tmpl, CSTR("serve"), CSTR("Connection established.")
invoke strlen, addr [rbx].http
invoke send, cfd, addr [rbx].http, eax , 0
invoke close, cfd
.endw
assume rbx:nothing
ret
ENDMETHOD
METHOD websrv, Destroy, <VOIDARG>, <>
mov rbx, thisPtr
assume rbx:ptr websrv
invoke printf, addr [rbx].tmpl,CSTR("destroy"), CSTR("Calling Close and exit.")
invoke close, [rbx].sock
if @Platform eq WIN64
invoke WSACleanup, addr [rbx].wsa
endif
assume rbx:nothing
invoke exit, 0
ret
ENDMETHOD
endif ;; __WEBSRV_CLASS__
;; Start of main run code...
.code
main proc
local server:ptr websrv
mov server, _NEW(websrv)
server->serve()
_DELETE(server)
ret
main endp
end
</syntaxhighlight>
=={{header|zkl}}==
A threaded web server that returns "Goodbye, World!" for every request
<syntaxhighlight lang
const SERVLET_THREADS
// A class to process requests from clients (eg browsers)
// in a thread. Requests are received via a pipe, which feeds
// all Servlet threads.
class Servlet
fcn init(jobPipe)
fcn liftoff(jobPipe)
while(1)
socket
if(socket.wait(60) != 1) // what is Chrome doing?
{ socket.close(); continue; }
if (request
try
}
}
fcn splashdown(h,e)
}
fcn processRequest(request,socket)
response:=responseHeader();
response+="Goodbye, World!";
Line 1,244 ⟶ 2,467:
}
fcn responseHeader(status=200,reason="OK")
String(
"HTTP/1.0 ",status," ",reason,"\r\n",
Time.Date.httpDate(),"\r\n"
Line 1,251 ⟶ 2,474:
"Connection: close\r\n"
"Content-Type: text/html; charset=UTF-8\r\n"
"\r\n")
}
//////////////////// Start the server ///////////////////////
var jobPipe
do(SERVLET_THREADS)
// Create the HTTP server listen socket
// Sits here forever passing client HTTP connects to Servlets
serverSocket
println("HTTP server started at http://",
serverSocket.hostname, ":", serverSocket.port);
serverSocket.listen(jobPipe);</
| |||