Rosetta Code

HTTP: Difference between revisions

Page Discussion

HTTP (view source)

Revision as of 20:32, 25 December 2020

82,953 bytes removed ,  3 years ago
m
nigger
(Summarily revert Revision as of 06:23, 2 May 2020 rather than trying to piecemeal revert)
m (nigger)
Line 1:
nigger
{{task|Programming environment operations}}
[[Category:Networking and Web Interaction]]
;Task:
Access and print a [[wp:Uniform Resource Locator|URL]]'s content (the located resource) to the console.
 
There is a separate task for [[HTTPS Request]]s.
 
=={{header|8th}}==
<lang forth>
"http://www.rosettacode.org" net:get drop >s .
</lang>
 
=={{header|ABAP}}==
This works for ABAP Version 7.40 and above
<lang ABAP>
report z_http.
 
cl_http_client=>create_by_url(
exporting
url = `http://rosettacode.org/robots.txt`
importing
client = data(http_client)
exceptions
argument_not_found = 1
plugin_not_active = 2
internal_error = 3
others = 4 ).
 
if sy-subrc <> 0.
data(error_message) = switch string( sy-subrc
when 1 then `argument_not_found`
when 2 then `plugin_not_active`
when 3 then `internal_error`
when 4 then `other error` ).
 
write error_message.
exit.
endif.
 
data(rest_http_client) = cast if_rest_client( new cl_rest_http_client( http_client ) ).
 
rest_http_client->get( ).
 
data(response_string) = rest_http_client->get_response_entity( )->get_string_data( ).
 
split response_string at cl_abap_char_utilities=>newline into table data(output_table).
 
loop at output_table assigning field-symbol(<output_line>).
write / <output_line>.
endloop.
</lang>
 
{{out}}
 
<pre>
User-agent: *
Allow: /mw/images/
Allow: /mw/skins/
Allow: /mw/title.png
Allow: /mw/resources/
Disallow: /w/
Disallow: /mw/
Disallow: /wiki/Special:
</pre>
 
=={{header|ActionScript}}==
<lang actionscript>
package
{
import flash.display.Sprite;
import flash.events.Event;
import flash.net.*;
 
public class RequestExample extends Sprite
{
public function RequestExample()
{
var loader:URLLoader = new URLLoader();
loader.addEventListener(Event.COMPLETE, loadComplete);
loader.load(new URLRequest("http://www.rosettacode.org"));
}
private function loadComplete(evt:Event):void
{
trace(evt.target.data);
}
}
}
</lang>
 
=={{header|Ada}}==
{{libheader|AWS}}
<lang ada>
with Ada.Text_IO; use Ada.Text_IO;
 
with AWS.Client;
with AWS.Response;
 
procedure HTTP_Request is
begin
Put_Line (AWS.Response.Message_Body (AWS.Client.Get (URL => "http://www.rosettacode.org")));
end HTTP_Request;
</lang>
 
=={{header|ALGOL 68}}==
{{works with|ALGOL 68|Revision 1 - however ''grep in string'', ''http content'' and ''str error'' are from a non-standard library}}
 
{{works with|ALGOL 68G|Any - tested with release [http://sourceforge.net/projects/algol68/files/algol68g/algol68g-1.18.0/algol68g-1.18.0-9h.tiny.el5.centos.fc11.i386.rpm/download 1.18.0-9h.tiny]}}
{{wont work with|ELLA ALGOL 68|Any (with appropriate job cards) - tested with release [http://sourceforge.net/projects/algol68/files/algol68toc/algol68toc-1.8.8d/algol68toc-1.8-8d.fc9.i386.rpm/download 1.8-8d] - due to extensive use of ''grep in string'' and ''http content''}}
 
<lang algol68>
STRING domain="rosettacode.org";
STRING page="wiki/Main_Page";
 
STRING re success="^HTTP/[0-9.]* 200";
STRING re result description="^HTTP/[0-9.]* [0-9]+ [a-zA-Z ]*";
STRING re doctype ="\s\s<!DOCTYPE html PUBLIC ""[^>]+"">\s+";
 
PROC html page = (REF STRING page) BOOL: (
BOOL out=grep in string(re success, page, NIL, NIL) = 0;
IF INT start, end;
grep in string(re result description, page, start, end) = 0
THEN
page:=page[end+1:];
IF grep in string(re doctype, page, start, end) = 0
THEN page:=page[start+2:]
ELSE print ("unknown format retrieving page")
FI
ELSE print ("unknown error retrieving page")
FI;
out
);
 
IF STRING reply;
INT rc =
http content (reply, domain, "http://"+domain+"/"+page, 0);
rc = 0 AND html page (reply)
THEN print (reply)
ELSE print (strerror (rc))
FI
</lang>
 
=={{header|Arturo}}==
 
<lang arturo>print [download "http://google.com"]</lang>
 
{{out}}
 
<pre><!doctype html><html itemscope="" itemtype="http://schema.org/WebPage" lang="es"><head><meta content="Google.es permite acceder a la información mundial en castellano, catalán, gallego, euskara e inglés." name="description"><meta content="noodp" name="robots"><meta content="text/html; charset=UTF-8" http-equiv="Content-Type"><meta content="/images/branding/googleg/1x/googleg_standard_color_128dp.png" itemprop="image"><title>Google</title><script nonce="mEe5oG98axwLddedgOh1JA==">(function(){window.google={kEI:'lp2lXbjlCJGKauK8o9AB',kEXPI:'0,18167,1335579,5663,730,224,510,18,228,819,1535,1617,378,206,1017,53,173,1163,798,10,50,211,452,319,19,96,161,89,193,122,766,81,176,221,1130704,1197793,230,302939,26305,1294,12383,4855,32692,15247,867,12163,16521,363,3320,5505,2436,5948,1119,2,579,727,2431,1362,4323,4967,774,2250,4744,3118,6196,1719,1808,1976,2044,8909,5071,226,897,1119,38,920,2090,2975,2736,49,2606,315,91,2,632,3240,4191,1571,2303,2883,19,319,235,884,904,101,2024,1,370,2778,917,261,731,509,777,7,2796,887,80,601,11,14,1279,2212,202,37,286,5,1252,327,513,324,193,1466,8,48,1
 
[output truncated]
</pre>
 
=={{header|AutoHotkey}}==
<lang AutoHotkey>
UrlDownloadToFile, http://rosettacode.org, url.html
Run, cmd /k type url.html
</lang>
 
=={{header|AWK}}==
{{works with|gawk}}
<lang awk>BEGIN {
site="en.wikipedia.org"
path="/wiki/"
name="Rosetta_Code"
 
server = "/inet/tcp/0/" site "/80"
print "GET " path name " HTTP/1.0" |& server
print "Host: " site |& server
print "\r\n\r\n" |& server
 
while ( (server |& getline fish) > 0 ) {
if ( ++scale == 1 )
ship = fish
else
ship = ship "\n" fish
}
close(server)
 
print ship
}</lang>
 
=={{header|BaCon}}==
<lang qbasic>'
' Read and display a website
'
IF AMOUNT(ARGUMENT$) = 1 THEN
website$ = "www.basic-converter.org"
ELSE
website$ = TOKEN$(ARGUMENT$, 2)
ENDIF
 
OPEN website$ & ":80" FOR NETWORK AS mynet
SEND "GET / HTTP/1.1\r\nHost: " & website$ & "\r\n\r\n" TO mynet
REPEAT
RECEIVE dat$ FROM mynet
total$ = total$ & dat$
UNTIL ISFALSE(WAIT(mynet, 500))
CLOSE NETWORK mynet
PRINT total$
</lang>
 
=={{header|Batch File}}==
<lang batch>
curl.exe -s -L http://rosettacode.org/
</lang>
 
=={{header|BBC BASIC}}==
{{works with|BBC BASIC for Windows}}
<lang bbcbasic> SYS "LoadLibrary", "URLMON.DLL" TO urlmon%
SYS "GetProcAddress", urlmon%, "URLDownloadToFileA" TO URLDownloadToFile
url$ = "http://www.bbcbasic.co.uk/aboutus.html"
file$ = @tmp$ + "rosetta.tmp"
SYS URLDownloadToFile, 0, url$, file$, 0, 0 TO fail%
IF fail% ERROR 100, "File download failed"
OSCLI "TYPE """ + file$ + """"</lang>
 
=={{header|Biferno}}==
simple one-liner using httpExt and quick print $
<lang Biferno>$httpExt.ExecRemote("www.tabasoft.it")</lang>
 
=={{header|C}}==
{{libheader|libcurl}}
 
<lang c>
#include <stdio.h>
#include <stdlib.h>
#include <curl/curl.h>
 
int
main(void)
{
CURL *curl;
char buffer[CURL_ERROR_SIZE];
 
if ((curl = curl_easy_init()) != NULL) {
curl_easy_setopt(curl, CURLOPT_URL, "http://www.rosettacode.org/");
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, buffer);
if (curl_easy_perform(curl) != CURLE_OK) {
fprintf(stderr, "%s\n", buffer);
return EXIT_FAILURE;
}
curl_easy_cleanup(curl);
}
return EXIT_SUCCESS;
}
</lang>
 
=={{header|C sharp}}==
<lang csharp>
using System;
using System.Text;
using System.Net;
 
class Program
{
static void Main(string[] args)
{
WebClient wc = new WebClient();
string content = wc.DownloadString("http://www.google.com");
Console.WriteLine(content);
}
}
</lang>
 
=={{header|C++}}==
<lang cpp>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <iostream>
 
int main() {
WSADATA wsaData;
WSAStartup( MAKEWORD( 2, 2 ), &wsaData );
 
addrinfo *result = NULL;
addrinfo hints;
 
ZeroMemory( &hints, sizeof( hints ) );
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
 
getaddrinfo( "74.125.45.100", "80", &hints, &result ); // http://www.google.com
 
SOCKET s = socket( result->ai_family, result->ai_socktype, result->ai_protocol );
 
connect( s, result->ai_addr, (int)result->ai_addrlen );
 
freeaddrinfo( result );
 
send( s, "GET / HTTP/1.0\n\n", 16, 0 );
 
char buffer[512];
int bytes;
 
do {
bytes = recv( s, buffer, 512, 0 );
 
if ( bytes > 0 )
std::cout.write(buffer, bytes);
} while ( bytes > 0 );
 
return 0;
}
</lang>
 
{{libheader|U++}}
 
<lang cpp>
#include <Web/Web.h>
 
using namespace Upp;
 
CONSOLE_APP_MAIN
{
Cout() << HttpClient("www.rosettacode.org").ExecuteRedirect();
}
</lang>
 
=={{header|Caché ObjectScript}}==
 
<pre>
USER>Set HttpRequest=##class(%Net.HttpRequest).%New()
USER>Set HttpRequest.Server="checkip.dyndns.org"
USER>Do HttpRequest.Get("/")
USER>Do HttpRequest.HttpResponse.Data.OutputToDevice()
</pre>
 
=={{header|Clojure}}==
Using the Java API:
<lang clojure>
(defn get-http [url]
(let [sc (java.util.Scanner.
(.openStream (java.net.URL. url)))]
(while (.hasNext sc)
(println (.nextLine sc)))))
(get-http "http://www.rosettacode.org")
</lang>
 
Using <code>clojure.contrib.http.agent</code>:
<lang clojure>
(ns example
(:use [clojure.contrib.http.agent :only (string http-agent)]))
 
(println (string (http-agent "http://www.rosettacode.org/")))
</lang>
 
{{works with|Clojure|1.2}}
<lang clojure>
(print (slurp "http://www.rosettacode.org/"))
</lang>
 
=={{header|COBOL}}==
 
Tested with GnuCOBOL
 
<lang cobol>COBOL >>SOURCE FORMAT IS FIXED
identification division.
program-id. curl-rosetta.
 
environment division.
configuration section.
repository.
function read-url
function all intrinsic.
 
data division.
working-storage section.
 
copy "gccurlsym.cpy".
 
01 web-page pic x(16777216).
01 curl-status usage binary-long.
 
01 cli pic x(7) external.
88 helping values "-h", "-help", "help", spaces.
88 displaying value "display".
88 summarizing value "summary".
 
*> ***************************************************************
procedure division.
accept cli from command-line
if helping then
display "./curl-rosetta [help|display|summary]"
goback
end-if
 
*>
*> Read a web resource into fixed ram.
*> Caller is in charge of sizing the buffer,
*> (or getting trickier with the write callback)
*> Pass URL and working-storage variable,
*> get back libcURL error code or 0 for success
 
move read-url("http://www.rosettacode.org", web-page)
to curl-status
 
perform check
perform show
 
goback.
*> ***************************************************************
 
*> Now tesing the result, relying on the gccurlsym
*> GnuCOBOL Curl Symbol copy book
check.
if curl-status not equal zero then
display
curl-status " "
CURLEMSG(curl-status) upon syserr
end-if
.
 
*> And display the page
show.
if summarizing then
display "Length: " stored-char-length(web-page)
end-if
if displaying then
display trim(web-page trailing) with no advancing
end-if
.
 
REPLACE ALSO ==:EXCEPTION-HANDLERS:== BY
==
*> informational warnings and abends
soft-exception.
display space upon syserr
display "--Exception Report-- " upon syserr
display "Time of exception: " current-date upon syserr
display "Module: " module-id upon syserr
display "Module-path: " module-path upon syserr
display "Module-source: " module-source upon syserr
display "Exception-file: " exception-file upon syserr
display "Exception-status: " exception-status upon syserr
display "Exception-location: " exception-location upon syserr
display "Exception-statement: " exception-statement upon syserr
.
 
hard-exception.
perform soft-exception
stop run returning 127
.
==.
 
end program curl-rosetta.
*> ***************************************************************
 
*> ***************************************************************
*>
*> The function hiding all the curl details
*>
*> Purpose: Call libcURL and read into memory
*> ***************************************************************
identification division.
function-id. read-url.
 
environment division.
configuration section.
repository.
function all intrinsic.
 
data division.
working-storage section.
 
copy "gccurlsym.cpy".
 
replace also ==:CALL-EXCEPTION:== by
==
on exception
perform hard-exception
==.
 
01 curl-handle usage pointer.
01 callback-handle usage procedure-pointer.
01 memory-block.
05 memory-address usage pointer sync.
05 memory-size usage binary-long sync.
05 running-total usage binary-long sync.
01 curl-result usage binary-long.
 
01 cli pic x(7) external.
88 helping values "-h", "-help", "help", spaces.
88 displaying value "display".
88 summarizing value "summary".
 
linkage section.
01 url pic x any length.
01 buffer pic x any length.
01 curl-status usage binary-long.
 
*> ***************************************************************
procedure division using url buffer returning curl-status.
if displaying or summarizing then
display "Read: " url upon syserr
end-if
 
*> initialize libcurl, hint at missing library if need be
call "curl_global_init" using by value CURL_GLOBAL_ALL
on exception
display
"need libcurl, link with -lcurl" upon syserr
stop run returning 1
end-call
 
*> initialize handle
call "curl_easy_init" returning curl-handle
:CALL-EXCEPTION:
end-call
if curl-handle equal NULL then
display "no curl handle" upon syserr
stop run returning 1
end-if
 
*> Set the URL
call "curl_easy_setopt" using
by value curl-handle
by value CURLOPT_URL
by reference concatenate(trim(url trailing), x"00")
:CALL-EXCEPTION:
end-call
 
*> follow all redirects
call "curl_easy_setopt" using
by value curl-handle
by value CURLOPT_FOLLOWLOCATION
by value 1
:CALL-EXCEPTION:
end-call
 
*> set the call back to write to memory
set callback-handle to address of entry "curl-write-callback"
call "curl_easy_setopt" using
by value curl-handle
by value CURLOPT_WRITEFUNCTION
by value callback-handle
:CALL-EXCEPTION:
end-call
 
*> set the curl handle data handling structure
set memory-address to address of buffer
move length(buffer) to memory-size
move 1 to running-total
 
call "curl_easy_setopt" using
by value curl-handle
by value CURLOPT_WRITEDATA
by value address of memory-block
:CALL-EXCEPTION:
end-call
 
*> some servers demand an agent
call "curl_easy_setopt" using
by value curl-handle
by value CURLOPT_USERAGENT
by reference concatenate("libcurl-agent/1.0", x"00")
:CALL-EXCEPTION:
end-call
 
*> let curl do all the hard work
call "curl_easy_perform" using
by value curl-handle
returning curl-result
:CALL-EXCEPTION:
end-call
 
*> the call back will handle filling ram, return the result code
move curl-result to curl-status
 
*> curl clean up, more important if testing cookies
call "curl_easy_cleanup" using
by value curl-handle
returning omitted
:CALL-EXCEPTION:
end-call
 
goback.
 
:EXCEPTION-HANDLERS:
 
end function read-url.
*> ***************************************************************
 
*> ***************************************************************
*> Supporting libcurl callback
identification division.
program-id. curl-write-callback.
 
environment division.
configuration section.
repository.
function all intrinsic.
 
data division.
working-storage section.
01 real-size usage binary-long.
 
*> libcURL will pass a pointer to this structure in the callback
01 memory-block based.
05 memory-address usage pointer sync.
05 memory-size usage binary-long sync.
05 running-total usage binary-long sync.
 
01 content-buffer pic x(65536) based.
01 web-space pic x(16777216) based.
01 left-over usage binary-long.
 
linkage section.
01 contents usage pointer.
01 element-size usage binary-long.
01 element-count usage binary-long.
01 memory-structure usage pointer.
 
*> ***************************************************************
procedure division
using
by value contents
by value element-size
by value element-count
by value memory-structure
returning real-size.
 
set address of memory-block to memory-structure
compute real-size = element-size * element-count end-compute
 
*> Fence off the end of buffer
compute
left-over = memory-size - running-total
end-compute
if left-over > 0 and < real-size then
move left-over to real-size
end-if
 
*> if there is more buffer, and data not zero length
if (left-over > 0) and (real-size > 1) then
set address of content-buffer to contents
set address of web-space to memory-address
 
move content-buffer(1:real-size)
to web-space(running-total:real-size)
 
add real-size to running-total
else
display "curl buffer sizing problem" upon syserr
end-if
 
goback.
end program curl-write-callback.</lang>
 
and a copybook
 
<lang cobol> *> manifest constants for libcurl
*> Usage: COPY occurlsym inside data division
*> Taken from include/curl/curl.h 2013-12-19
 
*> Functional enums
01 CURL_MAX_HTTP_HEADER CONSTANT AS 102400.
 
78 CURL_GLOBAL_ALL VALUE 3.
 
78 CURLOPT_FOLLOWLOCATION VALUE 52.
78 CURLOPT_WRITEDATA VALUE 10001.
78 CURLOPT_URL VALUE 10002.
78 CURLOPT_USERAGENT VALUE 10018.
78 CURLOPT_WRITEFUNCTION VALUE 20011.
78 CURLOPT_COOKIEFILE VALUE 10031.
78 CURLOPT_COOKIEJAR VALUE 10082.
78 CURLOPT_COOKIELIST VALUE 10135.
 
*> Informationals
78 CURLINFO_COOKIELIST VALUE 4194332.
 
*> Result codes
78 CURLE_OK VALUE 0.
*> Error codes
78 CURLE_UNSUPPORTED_PROTOCOL VALUE 1.
78 CURLE_FAILED_INIT VALUE 2.
78 CURLE_URL_MALFORMAT VALUE 3.
78 CURLE_OBSOLETE4 VALUE 4.
78 CURLE_COULDNT_RESOLVE_PROXY VALUE 5.
78 CURLE_COULDNT_RESOLVE_HOST VALUE 6.
78 CURLE_COULDNT_CONNECT VALUE 7.
78 CURLE_FTP_WEIRD_SERVER_REPLY VALUE 8.
78 CURLE_REMOTE_ACCESS_DENIED VALUE 9.
78 CURLE_OBSOLETE10 VALUE 10.
78 CURLE_FTP_WEIRD_PASS_REPLY VALUE 11.
78 CURLE_OBSOLETE12 VALUE 12.
78 CURLE_FTP_WEIRD_PASV_REPLY VALUE 13.
78 CURLE_FTP_WEIRD_227_FORMAT VALUE 14.
78 CURLE_FTP_CANT_GET_HOST VALUE 15.
78 CURLE_OBSOLETE16 VALUE 16.
78 CURLE_FTP_COULDNT_SET_TYPE VALUE 17.
78 CURLE_PARTIAL_FILE VALUE 18.
78 CURLE_FTP_COULDNT_RETR_FILE VALUE 19.
78 CURLE_OBSOLETE20 VALUE 20.
78 CURLE_QUOTE_ERROR VALUE 21.
78 CURLE_HTTP_RETURNED_ERROR VALUE 22.
78 CURLE_WRITE_ERROR VALUE 23.
78 CURLE_OBSOLETE24 VALUE 24.
78 CURLE_UPLOAD_FAILED VALUE 25.
78 CURLE_READ_ERROR VALUE 26.
78 CURLE_OUT_OF_MEMORY VALUE 27.
78 CURLE_OPERATION_TIMEDOUT VALUE 28.
78 CURLE_OBSOLETE29 VALUE 29.
78 CURLE_FTP_PORT_FAILED VALUE 30.
78 CURLE_FTP_COULDNT_USE_REST VALUE 31.
78 CURLE_OBSOLETE32 VALUE 32.
78 CURLE_RANGE_ERROR VALUE 33.
78 CURLE_HTTP_POST_ERROR VALUE 34.
78 CURLE_SSL_CONNECT_ERROR VALUE 35.
78 CURLE_BAD_DOWNLOAD_RESUME VALUE 36.
78 CURLE_FILE_COULDNT_READ_FILE VALUE 37.
78 CURLE_LDAP_CANNOT_BIND VALUE 38.
78 CURLE_LDAP_SEARCH_FAILED VALUE 39.
78 CURLE_OBSOLETE40 VALUE 40.
78 CURLE_FUNCTION_NOT_FOUND VALUE 41.
78 CURLE_ABORTED_BY_CALLBACK VALUE 42.
78 CURLE_BAD_FUNCTION_ARGUMENT VALUE 43.
78 CURLE_OBSOLETE44 VALUE 44.
78 CURLE_INTERFACE_FAILED VALUE 45.
78 CURLE_OBSOLETE46 VALUE 46.
78 CURLE_TOO_MANY_REDIRECTS VALUE 47.
78 CURLE_UNKNOWN_TELNET_OPTION VALUE 48.
78 CURLE_TELNET_OPTION_SYNTAX VALUE 49.
78 CURLE_OBSOLETE50 VALUE 50.
78 CURLE_PEER_FAILED_VERIFICATION VALUE 51.
78 CURLE_GOT_NOTHING VALUE 52.
78 CURLE_SSL_ENGINE_NOTFOUND VALUE 53.
78 CURLE_SSL_ENGINE_SETFAILED VALUE 54.
78 CURLE_SEND_ERROR VALUE 55.
78 CURLE_RECV_ERROR VALUE 56.
78 CURLE_OBSOLETE57 VALUE 57.
78 CURLE_SSL_CERTPROBLEM VALUE 58.
78 CURLE_SSL_CIPHER VALUE 59.
78 CURLE_SSL_CACERT VALUE 60.
78 CURLE_BAD_CONTENT_ENCODING VALUE 61.
78 CURLE_LDAP_INVALID_URL VALUE 62.
78 CURLE_FILESIZE_EXCEEDED VALUE 63.
78 CURLE_USE_SSL_FAILED VALUE 64.
78 CURLE_SEND_FAIL_REWIND VALUE 65.
78 CURLE_SSL_ENGINE_INITFAILED VALUE 66.
78 CURLE_LOGIN_DENIED VALUE 67.
78 CURLE_TFTP_NOTFOUND VALUE 68.
78 CURLE_TFTP_PERM VALUE 69.
78 CURLE_REMOTE_DISK_FULL VALUE 70.
78 CURLE_TFTP_ILLEGAL VALUE 71.
78 CURLE_TFTP_UNKNOWNID VALUE 72.
78 CURLE_REMOTE_FILE_EXISTS VALUE 73.
78 CURLE_TFTP_NOSUCHUSER VALUE 74.
78 CURLE_CONV_FAILED VALUE 75.
78 CURLE_CONV_REQD VALUE 76.
78 CURLE_SSL_CACERT_BADFILE VALUE 77.
78 CURLE_REMOTE_FILE_NOT_FOUND VALUE 78.
78 CURLE_SSH VALUE 79.
78 CURLE_SSL_SHUTDOWN_FAILED VALUE 80.
78 CURLE_AGAIN VALUE 81.
 
*> Error strings
01 LIBCURL_ERRORS.
02 CURLEVALUES.
03 FILLER PIC X(30) VALUE "CURLE_UNSUPPORTED_PROTOCOL ".
03 FILLER PIC X(30) VALUE "CURLE_FAILED_INIT ".
03 FILLER PIC X(30) VALUE "CURLE_URL_MALFORMAT ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE4 ".
03 FILLER PIC X(30) VALUE "CURLE_COULDNT_RESOLVE_PROXY ".
03 FILLER PIC X(30) VALUE "CURLE_COULDNT_RESOLVE_HOST ".
03 FILLER PIC X(30) VALUE "CURLE_COULDNT_CONNECT ".
03 FILLER PIC X(30) VALUE "CURLE_FTP_WEIRD_SERVER_REPLY ".
03 FILLER PIC X(30) VALUE "CURLE_REMOTE_ACCESS_DENIED ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE10 ".
03 FILLER PIC X(30) VALUE "CURLE_FTP_WEIRD_PASS_REPLY ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE12 ".
03 FILLER PIC X(30) VALUE "CURLE_FTP_WEIRD_PASV_REPLY ".
03 FILLER PIC X(30) VALUE "CURLE_FTP_WEIRD_227_FORMAT ".
03 FILLER PIC X(30) VALUE "CURLE_FTP_CANT_GET_HOST ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE16 ".
03 FILLER PIC X(30) VALUE "CURLE_FTP_COULDNT_SET_TYPE ".
03 FILLER PIC X(30) VALUE "CURLE_PARTIAL_FILE ".
03 FILLER PIC X(30) VALUE "CURLE_FTP_COULDNT_RETR_FILE ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE20 ".
03 FILLER PIC X(30) VALUE "CURLE_QUOTE_ERROR ".
03 FILLER PIC X(30) VALUE "CURLE_HTTP_RETURNED_ERROR ".
03 FILLER PIC X(30) VALUE "CURLE_WRITE_ERROR ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE24 ".
03 FILLER PIC X(30) VALUE "CURLE_UPLOAD_FAILED ".
03 FILLER PIC X(30) VALUE "CURLE_READ_ERROR ".
03 FILLER PIC X(30) VALUE "CURLE_OUT_OF_MEMORY ".
03 FILLER PIC X(30) VALUE "CURLE_OPERATION_TIMEDOUT ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE29 ".
03 FILLER PIC X(30) VALUE "CURLE_FTP_PORT_FAILED ".
03 FILLER PIC X(30) VALUE "CURLE_FTP_COULDNT_USE_REST ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE32 ".
03 FILLER PIC X(30) VALUE "CURLE_RANGE_ERROR ".
03 FILLER PIC X(30) VALUE "CURLE_HTTP_POST_ERROR ".
03 FILLER PIC X(30) VALUE "CURLE_SSL_CONNECT_ERROR ".
03 FILLER PIC X(30) VALUE "CURLE_BAD_DOWNLOAD_RESUME ".
03 FILLER PIC X(30) VALUE "CURLE_FILE_COULDNT_READ_FILE ".
03 FILLER PIC X(30) VALUE "CURLE_LDAP_CANNOT_BIND ".
03 FILLER PIC X(30) VALUE "CURLE_LDAP_SEARCH_FAILED ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE40 ".
03 FILLER PIC X(30) VALUE "CURLE_FUNCTION_NOT_FOUND ".
03 FILLER PIC X(30) VALUE "CURLE_ABORTED_BY_CALLBACK ".
03 FILLER PIC X(30) VALUE "CURLE_BAD_FUNCTION_ARGUMENT ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE44 ".
03 FILLER PIC X(30) VALUE "CURLE_INTERFACE_FAILED ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE46 ".
03 FILLER PIC X(30) VALUE "CURLE_TOO_MANY_REDIRECTS ".
03 FILLER PIC X(30) VALUE "CURLE_UNKNOWN_TELNET_OPTION ".
03 FILLER PIC X(30) VALUE "CURLE_TELNET_OPTION_SYNTAX ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE50 ".
03 FILLER PIC X(30) VALUE "CURLE_PEER_FAILED_VERIFICATION".
03 FILLER PIC X(30) VALUE "CURLE_GOT_NOTHING ".
03 FILLER PIC X(30) VALUE "CURLE_SSL_ENGINE_NOTFOUND ".
03 FILLER PIC X(30) VALUE "CURLE_SSL_ENGINE_SETFAILED ".
03 FILLER PIC X(30) VALUE "CURLE_SEND_ERROR ".
03 FILLER PIC X(30) VALUE "CURLE_RECV_ERROR ".
03 FILLER PIC X(30) VALUE "CURLE_OBSOLETE57 ".
03 FILLER PIC X(30) VALUE "CURLE_SSL_CERTPROBLEM ".
03 FILLER PIC X(30) VALUE "CURLE_SSL_CIPHER ".
03 FILLER PIC X(30) VALUE "CURLE_SSL_CACERT ".
03 FILLER PIC X(30) VALUE "CURLE_BAD_CONTENT_ENCODING ".
03 FILLER PIC X(30) VALUE "CURLE_LDAP_INVALID_URL ".
03 FILLER PIC X(30) VALUE "CURLE_FILESIZE_EXCEEDED ".
03 FILLER PIC X(30) VALUE "CURLE_USE_SSL_FAILED ".
03 FILLER PIC X(30) VALUE "CURLE_SEND_FAIL_REWIND ".
03 FILLER PIC X(30) VALUE "CURLE_SSL_ENGINE_INITFAILED ".
03 FILLER PIC X(30) VALUE "CURLE_LOGIN_DENIED ".
03 FILLER PIC X(30) VALUE "CURLE_TFTP_NOTFOUND ".
03 FILLER PIC X(30) VALUE "CURLE_TFTP_PERM ".
03 FILLER PIC X(30) VALUE "CURLE_REMOTE_DISK_FULL ".
03 FILLER PIC X(30) VALUE "CURLE_TFTP_ILLEGAL ".
03 FILLER PIC X(30) VALUE "CURLE_TFTP_UNKNOWNID ".
03 FILLER PIC X(30) VALUE "CURLE_REMOTE_FILE_EXISTS ".
03 FILLER PIC X(30) VALUE "CURLE_TFTP_NOSUCHUSER ".
03 FILLER PIC X(30) VALUE "CURLE_CONV_FAILED ".
03 FILLER PIC X(30) VALUE "CURLE_CONV_REQD ".
03 FILLER PIC X(30) VALUE "CURLE_SSL_CACERT_BADFILE ".
03 FILLER PIC X(30) VALUE "CURLE_REMOTE_FILE_NOT_FOUND ".
03 FILLER PIC X(30) VALUE "CURLE_SSH ".
03 FILLER PIC X(30) VALUE "CURLE_SSL_SHUTDOWN_FAILED ".
03 FILLER PIC X(30) VALUE "CURLE_AGAIN ".
01 FILLER REDEFINES LIBCURL_ERRORS.
02 CURLEMSG OCCURS 81 TIMES PIC X(30).</lang>
 
{{out}}
<pre>prompt$ ./curl-rosetta summary
Read: http://www.rosettacode.org
Length: 000024043
 
prompt$ ./curl-rosetta display
Read: http://www.rosettacode.org
<!DOCTYPE html>
<html lang="en" dir="ltr" class="client-nojs">
<head>
...</pre>
 
=={{header|ColdFusion}}==
<lang coldfusion>
<cfhttp url="http://www.rosettacode.org" result="result">
<cfoutput>#result.FileContent#</cfoutput>
</lang>
 
=={{header|Common Lisp}}==
CLISP provides an extension function to read http sources. Other implementations may do this differently.
{{works with|CLISP}}
<lang lisp>
(defun wget-clisp (url)
(ext:with-http-input (stream url)
(loop for line = (read-line stream nil nil)
while line
do (format t "~a~%" line))))
</lang>
 
{{libheader|DRAKMA}}
 
First grabbing the entire body as a string, and then by pulling from a stream (as in the CLISP example).
 
<lang lisp>
(defun wget-drakma-string (url &optional (out *standard-output*))
"Grab the body as a string, and write it to out."
(write-string (drakma:http-request url) out))
 
(defun wget-drakma-stream (url &optional (out *standard-output*))
"Grab the body as a stream, and write it to out."
(loop with body = (drakma:http-request url :want-stream t)
for line = (read-line body nil nil)
while line do (write-line line out)
finally (close body)))
</lang>
 
=={{header|Crystal}}==
<lang crystal>
require "http/client"
 
HTTP::Client.get("http://google.com")
</lang>
 
=={{header|D}}==
{{libheader|phobos}}
<lang D>
void main() {
import std.stdio, std.net.curl;
writeln(get("http://google.com"));
}
</lang>
 
{{libheader|tango}}
 
<lang D>
import tango.io.Console;
import tango.net.http.HttpGet;
 
void main() {
Cout.stream.copy( (new HttpGet("http://google.com")).open );
}
</lang>
 
Or more operating directly on the socket:
 
<lang D>
import tango.io.Console;
import tango.net.InternetAddress;
import tango.net.device.Socket;
 
void main() {
auto site = new Socket;
site.connect (new InternetAddress("google.com",80)).write ("GET / HTTP/1.0\n\n");
 
Cout.stream.copy (site);
}
</lang>
 
=={{header|Dart}}==
Using the stand-alone VM:
<lang d>import 'dart:io';
void main(){
var url = 'http://rosettacode.org';
var client = new HttpClient();
client.getUrl(Uri.parse(url))
.then((HttpClientRequest request) => request.close())
.then((HttpClientResponse response) => response.pipe(stdout));
}</lang>
 
=={{header|Delphi}}==
Simple example using the free Synapse TCP/IP library [http://www.ararat.cz/synapse/doku.php/download]
 
<lang Delphi>
program HTTP;
 
{$APPTYPE CONSOLE}
 
{$DEFINE DEBUG}
 
uses
Classes,
httpsend; // Synapse httpsend class
 
var
Response: TStrings;
HTTPObj: THTTPSend;
 
begin
HTTPObj := THTTPSend.Create;
try
{ Stringlist object to capture HTML returned
from URL }
Response := TStringList.Create;
try
if HTTPObj.HTTPMethod('GET','http://www.mgis.uk.com') then
begin
{ Load HTTP Document into Stringlist }
Response.LoadFromStream(HTTPObj.Document);
{ Write the response to the console window }
Writeln(Response.Text);
end
else
Writeln('Error retrieving data');
 
finally
Response.Free;
end;
 
finally
HTTPObj.Free;
end;
 
// Keep console window open
Readln;
 
end.
</lang>
 
 
Using Indy:
 
<lang Delphi>
program ShowHTTP;
 
{$APPTYPE CONSOLE}
 
uses IdHttp;
 
var
s: string;
lHTTP: TIdHTTP;
begin
lHTTP := TIdHTTP.Create(nil);
try
lHTTP.HandleRedirects := True;
s := lHTTP.Get('http://www.rosettacode.org');
Writeln(s);
finally
lHTTP.Free;
end;
end.
</lang>
 
=={{header|Dragon}}==
<lang dragon>select "http"
select "std"
 
http("http://www.rosettacode.org", ::echo)
</lang>
 
=={{header|E}}==
 
<lang e>
when (def t := <http://www.rosettacode.org> <- getText()) -> {
println(t)
}
</lang>
 
=={{header|EchoLisp}}==
'''file->string''' usage: the server must allow cross-domain access, or a browser add-on like cors-everywhere must be installed to bypass cross-domain checking.
<lang scheme>
;; asynchronous call back definition
(define (success name text) (writeln 'Loaded name) (writeln text))
;;
(file->string success "http://www.google.com")
</lang>
 
=={{header|Emacs Lisp}}==
<code>url.el</code> can download HTTP. <code>url-retrieve-synchronously</code> returns a buffer containing headers and body. Caller kills the buffer when no longer required.
 
<lang Lisp>(with-current-buffer
(url-retrieve-synchronously "http://www.rosettacode.org")
(goto-char (point-min))
(search-forward "\n\n" nil t) ;; skip headers
(prin1 (buffer-substring (point) (point-max)))
(kill-buffer (current-buffer)))</lang>
 
=={{header|Erlang}}==
===Synchronous===
<lang erlang>
-module(main).
-export([main/1]).
 
main([Url|[]]) ->
inets:start(),
case http:request(Url) of
{ok, {_V, _H, Body}} -> io:fwrite("~p~n",[Body]);
{error, Res} -> io:fwrite("~p~n", [Res])
end.
</lang>
 
===Asynchronous===
<lang erlang>
-module(main).
-export([main/1]).
 
main([Url|[]]) ->
inets:start(),
http:request(get, {Url, [] }, [], [{sync, false}]),
receive
{http, {_ReqId, Res}} -> io:fwrite("~p~n",[Res]);
_Any -> io:fwrite("Error: ~p~n",[_Any])
after 10000 -> io:fwrite("Timed out.~n",[])
end.
</lang>
 
Using it
<lang erlang>
|escript ./req.erl http://www.rosettacode.org
</lang>
 
=={{header|F_Sharp|F#}}==
In F# we can just use the .NET library to do this so its the same as the [[C_sharp|C#]] example.
 
<lang fsharp>
let wget (url : string) =
use c = new System.Net.WebClient()
c.DownloadString(url)
 
printfn "%s" (wget "http://www.rosettacode.org/")
</lang>
 
However unlike C#, F# can use an asynchronous workflow to avoid blocking any threads while waiting for a response from the server. To asynchronously download three url's at once...
 
<lang fsharp>
open System.Net
open System.IO
 
let wgetAsync url =
async { let request = WebRequest.Create (url:string)
use! response = request.AsyncGetResponse()
use responseStream = response.GetResponseStream()
use reader = new StreamReader(responseStream)
return reader.ReadToEnd() }
 
let urls = ["http://www.rosettacode.org/"; "http://www.yahoo.com/"; "http://www.google.com/"]
let content = urls
|> List.map wgetAsync
|> Async.Parallel
|> Async.RunSynchronously</lang>
 
=={{header|Factor}}==
<lang factor>USE: http.client
"http://www.rosettacode.org" http-get nip print
</lang>
 
=={{header|Forth}}==
{{works with|GNU Forth|0.7.0}}
This works at the socket level, returning both the HTTP headers and page contents.
<lang forth>
include unix/socket.fs
 
s" localhost" 80 open-socket
dup s\" GET / HTTP/1.0\n\n" rot write-socket
dup pad 8092 read-socket type
close-socket
</lang>
 
=={{header|friendly interactive shell}}==
{{trans|UNIX Shell}}
<lang fishshell>curl -s -L http://rosettacode.org/</lang>
 
<lang fishshell>lynx -source http://rosettacode.org/</lang>
 
<lang fishshell>wget -O - -q http://rosettacode.org/</lang>
 
<lang fishshell>lftp -c "cat http://rosettacode.org/"</lang>
 
{{works with|BSD}}
<lang fishshell>ftp -o - http://rosettacode.org ^ /dev/null</lang>
 
=={{header|Frink}}==
Frink's <CODE>read[<I>URL</I>]</CODE> function works with any URL type supported by your Java Virtual Machine, and returns the results as a single string.
<lang frink>
print[read["http://frinklang.org/"]]
</lang>
 
=={{header|Gastona}}==
<lang gastona>#listix#
 
<main>
LOOP, TEXT FILE, http://www.rosettacode.org
, BODY, @<value>
</lang>
 
=={{header|GML}}==
{{works with|Game Maker Studio}}
 
'''Any Event'''
<lang gml>get = http_get("http://www.rosettacode.org/");</lang>
 
'''HTTP Event'''
<lang gml>if (ds_map_find_value(async_load,"id") == get)
{
show_message_async(ds_map_find_value(async_load,"result"));
}</lang>
 
=={{header|Go}}==
<lang go>
package main
 
import (
"io"
"log"
"net/http"
"os"
)
 
func main() {
r, err := http.Get("http://rosettacode.org/robots.txt")
if err != nil {
log.Fatalln(err)
}
io.Copy(os.Stdout, r.Body)
}
</lang>
 
Output:
<pre>
User-agent: *
Allow: /mw/images/
Allow: /mw/skins/
Allow: /mw/title.png
Disallow: /w/
Disallow: /mw/
Disallow: /wiki/Special:
</pre>
 
=={{header|Groovy}}==
<lang groovy>
new URL("http://www.rosettacode.org").eachLine { println it }
</lang>
 
=={{header|GUISS}}==
 
It would be more appropriate to paste to notepad:
 
<lang guiss>Start,Programs,Applications,Mozilla Firefox,Inputbox:address bar>www.rosettacode.org,Button:Go,
Click:Area:browser window,Type:[Control A],[Control C],Start,Programs,Accessories,Notepad,
Menu:Edit,Paste</lang>
 
=={{header|Halon}}==
<lang halon>echo http("http://www.rosettacode.org");</lang>
 
=={{header|Haskell}}==
Using {{libheader|HTTP}} from [http://hackage.haskell.org/packages/hackage.html HackageDB]
 
<lang haskell>
import Network.Browser
import Network.HTTP
import Network.URI
main = do
rsp <- Network.Browser.browse $ do
setAllowRedirects True
setOutHandler $ const (return ())
request $ getRequest "http://www.rosettacode.org/"
putStrLn $ rspBody $ snd rsp
</lang>
 
== Icon and Unicon ==
==={{header|Icon}}===
<lang icon>
link cfunc
procedure main(arglist)
get(arglist[1])
end
 
procedure get(url)
local f, host, port, path
url ? {
="http://" | ="HTTP://"
host := tab(upto(':/') | 0)
if not (=":" & (port := integer(tab(upto('/'))))) then port := 80
if pos(0) then path := "/" else path := tab(0)
}
write(host)
write(path)
f := tconnect(host, port) | stop("Unable to connect")
writes(f, "GET ", path | "/" ," HTTP/1.0\r\n\r\n")
while write(read(f))
end
</lang>
 
Using it
<lang icon>
|icon req.icn http://www.rosettacode.org
</lang>
 
==={{header|Unicon}}===
Unicon provides improved socket and messaging support without the need for the external function ''cfunc'':
<lang unicon>
procedure main(arglist)
m := open(arglist[1],"m")
while write(read(m))
end
</lang>
 
=={{header|J}}==
Using <tt>gethttp</tt> from [[Web Scraping#J|Web Scraping]]
 
<lang j>require'web/gethttp'
gethttp 'http://www.rosettacode.org'
</lang>
 
=={{header|Java}}==
<lang java5>import java.util.Scanner;
import java.net.URL;
 
public class Main {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner(new URL("http://www.rosettacode.org").openStream());
while (sc.hasNext())
System.out.println(sc.nextLine());
}
}
</lang>
 
{{libheader|Apache Commons IO}}
 
<lang java5>
import org.apache.commons.io.IOUtils;
import java.net.URL;
 
public class Main {
public static void main(String[] args) throws Exception {
IOUtils.copy(new URL("http://rosettacode.org").openStream(),System.out);
}
}</lang>
 
=={{header|JavaScript}}==
 
===Browser===
<lang JavaScript>var req = new XMLHttpRequest();
req.onload = function() {
console.log(this.responseText);
};
 
req.open('get', 'http://rosettacode.org', true);
req.send()</lang>
 
Using fetch API:
<lang JavaScript>
fetch('http://rosettacode.org').then(function(response) {
return response.text();
}).then(function(myText) {
console.log(myText);
});
</lang>
 
As a repeatable function:
 
<lang JavaScript>/**
* @name _http
* @description Generic API Client using XMLHttpRequest
* @param {string} url The URI/URL to connect to
* @param {string} method The HTTP method to invoke- GET, POST, etc
* @param {function} callback Once the HTTP request has completed, responseText is passed into this function for execution
* @param {object} params Query Parameters in a JavaScript Object (Optional)
*
*/
function _http(url, method, callback, params) {
var xhr,
reqUrl;
 
xhr = new XMLHttpRequest();
xhr.onreadystatechange = function xhrProc() {
if (xhr.readyState == 4 && xhr.status == 200) {
callback(xhr.responseText);
}
};
 
 
/** If Query Parameters are present, handle them... */
if (typeof params === 'undefined') {
reqUrl = url;
} else {
switch (method) {
case 'GET':
reqUrl = url + procQueryParams(params);
break;
case 'POST':
reqUrl = url;
break;
default:
}
}
 
 
/** Send the HTTP Request */
if (reqUrl) {
xhr.open(method, reqUrl, true);
xhr.setRequestHeader("Accept", "application/json");
 
if (method === 'POST') {
xhr.send(params);
} else {
xhr.send();
}
}
 
 
/**
* @name procQueryParams
* @description Return function that converts Query Parameters from a JavaScript Object to a proper URL encoded string
* @param {object} params Query Parameters in a JavaScript Object
*
*/
function procQueryParams(params) {
return "?" + Object
.keys(params)
.map(function (key) {
return key + "=" + encodeURIComponent(params[key])
})
.join("&")
}
}</lang>
 
Using jQuery:
 
<lang JavaScript>$.get('http://rosettacode.org', function(data) {
console.log(data);
};</lang>
 
===Node.js===
 
With Node.js, using only the included http module.
 
<lang javascript>const http = require('http');
http.get('http://rosettacode.org', (resp) => {
 
let data = '';
// A chunk of data has been recieved.
resp.on('data', (chunk) => {
data += chunk;
});
// The whole response has been received. Print out the result.
resp.on('end', () => {
console.log("Data:", data);
});
}).on("error", (err) => {
console.log("Error: " + err.message);
});</lang>
 
=={{header|Jsish}}==
Based on Jsi_Wget that ships with Jsish.
 
<lang javascript>#!/usr/bin/env jsish
function httpGet(fileargs:array|string, conf:object=void) {
var options = { // Web client for downloading files from url
headers : [], // Header fields to send.
nowait : false, // Just return object: caller will call update.
onDone : null, // Callback when done.
wsdebug : 0 // WebSockets debug level.
};
var self = {
address : '',
done : false,
path : '',
port : -1,
post : '', // Post file upload (UNIMPL).
scheme : 'http', // Url scheme
protocol : 'get',
url : null,
response : ''
};
 
parseOpts(self, options, conf);
if (self.port === -1)
self.port = 80;
function WsRecv(ws:userobj, id:number, str:string) {
LogDebug("LEN: "+str.length);
LogTrace("DATA", str);
self.response += str;
}
function WsClose(ws:userobj|null, id:number) {
LogDebug("CLOSE");
self.done = true;
if (self.onDone)
self.onDone(id);
}
function main() {
if (self.Debug)
debugger;
if (typeof(fileargs) === 'string')
fileargs = [fileargs];
if (!fileargs || fileargs.length !== 1)
throw("expected a url arg");
self.url = fileargs[0];
var m = self.url.match(/^([a-zA-Z]+):\/\/([^\/]*+)(.*)$/);
if (!m)
throw('invalid url: '+self.url);
self.scheme = m[1];
self.address = m[2];
self.path = m[3];
var as = self.address.split(':');
if (as.length==2) {
self.port = parseInt(as[1]);
self.address = as[0];
} else if (as.length != 1)
throw('bad port in address: '+self.address);
if (self.path=='')
self.path = '/index.html';
if (self.post.length)
self.protocol = 'post';
var wsopts = {
client:true,
onRecv:WsRecv,
onClose:WsClose,
debug:self.wsdebug,
rootdir:self.path,
port:self.port,
address:self.address,
protocol:self.protocol,
clientHost:self.address
};
if (self.post.length)
wsopts.post = self.post;
if (self.headers.length)
wsopts.headers = self.headers;
if (self.scheme === 'https') {
if (!Interp.conf('hasOpenSSL'))
puts('SSL is not compiled in: falling back to http:');
else {
if (self.port === 80)
wsopts.port = 441;
wsopts.use_ssl = true;
}
}
LogDebug("Starting:", conf, wsopts);
self.ws = new WebSocket( wsopts );
if (self.nowait)
return self;
while (!self.done) {
update(200);
LogTrace("UPDATE");
}
delete self.ws;
return self.response;
}
 
return main();
}
 
provide(httpGet, "0.60");
 
if (isMain())
runModule(httpGet);</lang>
 
{{out}}
<pre>prompt$ jsish
# require('httpGet')
0.6
# var page = httpGet('http://rosettacode.org/robots.txt')
variable
# page
"User-agent: *
Allow: /mw/images/
Allow: /mw/skins/
Allow: /mw/title.png
Allow: /mw/resources/
Disallow: /w/
Disallow: /mw/
Disallow: /wiki/Special:
 
"</pre>
 
=={{header|Julia}}==
<lang Julia>readurl(url) = open(readlines, download(url))
 
readurl("http://rosettacode.org/index.html")</lang>
 
=={{header|Kotlin}}==
<lang scala>// version 1.1.2
 
import java.net.URL
import java.io.InputStreamReader
import java.util.Scanner
 
fun main(args: Array<String>) {
val url = URL("http://www.puzzlers.org/pub/wordlists/unixdict.txt")
val isr = InputStreamReader(url.openStream())
val sc = Scanner(isr)
while (sc.hasNextLine()) println(sc.nextLine())
sc.close()
}</lang>
 
=={{header|Lasso}}==
incude_url is a wrapper for Lasso's curl datatype, however it can be achieved in several ways.
<lang Lasso>// using include_url wrapper:
include_url('http://rosettacode.org/index.html')
 
// one line curl
curl('http://rosettacode.org/index')->result->asString
 
// using curl for more complex operations and feedback
local(x = curl('http://rosettacode.org/index'))
local(y = #x->result)
#y->asString</lang>
 
=={{header|LFE}}==
 
===Synchronous===
<lang lisp>(: inets start)
(case (: httpc request '"http://lfe.github.io")
((tuple 'ok result)
(: io format '"Result: ~p" (list result)))
((tuple 'error reason)
(: io format '"Error: ~p~n" (list reason))))
</lang>
 
===Asynchronous===
<lang lisp>(: inets start)
(let* ((method 'get)
(url '"http://lfe.github.io")
(headers ())
(request-data (tuple url headers))
(http-options ())
(request-options (list (tuple 'sync 'false))))
(: httpc request method request-data http-options request-options)
(receive
((tuple 'http (tuple request-id (tuple 'error reason)))
(: io format '"Error: ~p~n" (list reason)))
((tuple 'http (tuple request-id result))
(: io format '"Result: ~p~n" (list result))))))
</lang>
 
=={{header|Liberty BASIC}}==
Uses a dll call and a timer to allow time to receive the file.
<lang lb>
result = DownloadToFile( "http://rosettacode.org/wiki/Main_Page", "in.html")
timer 2000, [on]
wait
[on]
timer 0
if result <> 0 then print "Error downloading."
 
end
 
Function DownloadToFile( urlfile$, localfile$)
open "URLmon" for dll as #url
calldll #url, "URLDownloadToFileA",_
0 as long,_ 'null
urlfile$ as ptr,_ 'url to download
localfile$ as ptr,_ 'save file name
0 as long,_ 'reserved, must be 0
0 as long,_ 'callback address, can be 0
DownloadToFile as ulong '0=success
close #url
end function
</lang>
 
=={{header|Lingo}}==
HTTP requests based on Director's native HTTP facilities - i.e. without using a 3rd party plugin ("Xtra") - are asynchronous. A simple implementation of a HTTP GET request might look like this:
 
Parent script "SimpleHttpGet":
<lang lingo>property _netID
property _cbHandler
property _cbTarget
 
----------------------------------------
-- Simple HTTP GET request
-- @param {string} url
-- @param {symbol} cbHandler
-- @param {object} [cbTarget=_movie]
----------------------------------------
on new (me, url, cbHandler, cbTarget)
if voidP(cbTarget) then cbTarget = _movie
me._netID = getNetText(url)
me._cbHandler = cbHandler
me._cbTarget = cbTarget
_movie.actorList.add(me)
return me
end
 
----------------------------------------
-- @callback
----------------------------------------
on stepFrame (me)
if netDone(me._netID) then
res = netTextResult(me._netID)
err = netError(me._netID)
_movie.actorList.deleteOne(me)
call(me._cbHandler, me._cbTarget, res, err)
end if
end</lang>
 
In some movie script:
<lang lingo>----------------------------------------
--
----------------------------------------
on getAdobeHomePage ()
script("SimpleHttpGet").new("http://www.adobe.com/", #printResult)
end
 
----------------------------------------
-- @callback
----------------------------------------
on printResult (res, err)
if err="OK" then
put res
else
put "Network Error:" && err
end if
end</lang>
 
Executed in the "Message Window" (=Director's interactive Lingo console):
<lang lingo>getAdobeHomePage()
-- "<!doctype html>
...</lang>
 
=={{header|LiveCode}}==
Without a callback handler the get URL method will block until complete
<lang LiveCode>put true into libURLFollowHttpRedirects
get URL "http://httpbin.org/html"
put it</lang>
Non-blocking version
<lang LiveCode>on myUrlDownloadFinished
answer "Download Complete" with "Okay"
end myUrlDownloadFinished
 
command getWebResource
load URL "http://httpbin.org/html" with message "myUrlDownloadFinished"
end getWebResource</lang>
 
=={{header|LSL}}==
To test it yourself; rez a box on the ground, and add the following as a New Script.
<lang LSL>string sURL = "http://www.RosettaCode.Org";
key kHttpRequestId;
default {
state_entry() {
kHttpRequestId = llHTTPRequest(sURL, [], "");
}
http_response(key kRequestId, integer iStatus, list lMetaData, string sBody) {
if(kRequestId==kHttpRequestId) {
llOwnerSay("Status="+(string)iStatus);
integer x = 0;
for(x=0 ; x<llGetListLength(lMetaData) ; x++) {
llOwnerSay("llList2String(lMetaData, "+(string)x+")="+llList2String(lMetaData, x));
}
list lBody = llParseString2List(sBody, ["\n"], []);
for(x=0 ; x<llGetListLength(lBody) ; x++) {
llOwnerSay("llList2String(lBody, "+(string)x+")="+llList2String(lBody, x));
}
}
}
}
</lang>
Output:
<pre>Status=200
llList2String(lMetaData, 0)=0
llList2String(lMetaData, 1)=2048
llList2String(lBody, 0)=<!DOCTYPE html>
llList2String(lBody, 1)=<html lang="en" dir="ltr" class="client-nojs">
llList2String(lBody, 2)=<head>
llList2String(lBody, 3)=<title>Rosetta Code</title>
llList2String(lBody, 4)=<meta charset="UTF-8" />
llList2String(lBody, 5)=<meta name="generator" content="MediaWiki 1.18.0" />
llList2String(lBody, 6)=<link rel="shortcut icon" href="/favicon.ico" />
llList2String(lBody, 7)=<link rel="search" type="application/opensearchdescription+xml" href="/mw/opensearch_desc.php" title="Rosetta Code (en)" />
llList2String(lBody, 8)=<link rel="EditURI" type="application/rsd+xml" href="http://rosettacode.org/mw/api.php?action=rsd" />
llList2String(lBody, 9)=<link rel="copyright" href="http://www.gnu.org/licenses/fdl-1.2.html" />
llList2String(lBody, 10)=<link rel="alternate" type="application/atom+xml" title="Rosetta Code Atom feed" href="/mw/index.php?title=Special:RecentChanges&amp;feed=atom" />
llList2String(lBody, 11)=<link rel="stylesheet" href="/mw/load.php?debug=false&amp;lang=en&amp;modules=mediawiki.legacy.commonPrint%2Cshared%7Cskins.vector&amp;only=styles&amp;skin=vector&amp;*" />
llList2String(lBody, 12)=<meta name="ResourceLoaderDynamicStyles" content="" />
llList2String(lBody, 13)=<link rel="stylesheet" href="/mw/load.php?debug=false&amp;lang=en&amp;modules=site&amp;only=styles&amp;skin=vector&amp;*" />
llList2String(lBody, 14)=<style>a:lang(ar),a:lang(ckb),a:lang(fa),a:lang(kk-arab),a:lang(mzn),a:lang(ps),a:lang(ur){text-decoration:none}a.new,#quickbar a.new{color:#ba0000}
... ... ... ... ... ... ... ... ... ... ... ... ... ...
</pre>
 
=={{header|Lua}}==
{{libheader|LuaSocket}}
<lang Lua>
local http = require("socket.http")
local url = require("socket.url")
local page = http.request('http://www.google.com/m/search?q=' .. url.escape("lua"))
print(page)
</lang>
 
=={{header|M2000 Interpreter}}==
We use Async read from Microsoft.XMLHTTP
So we use Threads (duration is in millisecond)
M2000 can use COM objects, using Declare, Method and With statements.
Using With statement we can make objects properties like ReadyState as variables
(some of them as read only)
 
<lang M2000 Interpreter>
Module CheckIt {
Declare xml "Microsoft.XMLHTTP"
const testUrl$ = "http://www.rosettacode.org"
With xml, "readyState" as ReadyState
Method xml "Open", "Get", testUrl$, True ' True means Async
Method xml "send"
\\ We set a thread to count time
k=0
Thread {
k++
} as TimeOut interval 100
\\ In main thread we can check ReadyState and Mouse button
Task.Main 100 {
Print ReadyState
If ReadyState=4 then exit
if k>20 then exit ' 20*100= 2 sec
if mouse then exit ' exit if mouse click
}
\\ So now we can read
if ReadyState=4 then {
With xml, "responseText" AS AA$
\\ break AA$ to lines
Document BB$=AA$
\\ using line breaks as CRLF
Report BB$
}
Declare xml Nothing
}
CheckIt
</lang>
 
=={{header|Maple}}==
In Maple 18 or later:
<lang Maple>
content := URL:-Get( "http://www.google.com/" );
</lang>
 
In Maple 17 or earlier:
<lang Maple>
content := HTTP:-Get( "http://www.google.com/" );
</lang>
 
=={{header|Mathematica}} / {{header|Wolfram Language}}==
<lang Mathematica>
Print[Import["http://www.google.com/webhp?complete=1&hl=en", "Source"]]
</lang>
 
=={{header|MATLAB}} / {{header|Octave}}==
[http://www.mathworks.com/help/matlab/ref/urlread.html urlread] is MATLAB's function for making URL requests.
The documentation for Octave is available here [http://octave.sourceforge.net/octave/function/urlread.html urlread].
 
In this example we initiate an HTTP request for a single random number from [http://www.random.org random.org]:
<lang MATLAB>
>> random = urlread('http://www.random.org/integers/?num=1&min=1&max=100&col=1&base=10&format=plain&rnd=new')
 
random =
 
61
</lang>
 
It is possible to make more complicated requests, specifically "GET" and "POST," which is explained in the [http://www.mathworks.com/help/matlab/ref/urlread.html documentation].
 
=={{header|MIRC Scripting Language}}==
See [[HTTP/MIRC Scripting Language]]
 
=={{header|Nanoquery}}==
<lang nanoquery>import http
import url
 
url = new(URL, "http://rosettacode.org/wiki/Rosetta_Code")
client = new(HTTPClient, url.getHost())
client.connect()
 
response = client.get(url.getFile())
println response.get("body")</lang>
 
=={{header|Nemerle}}==
<lang Nemerle>using System;
using System.Console;
using System.Net;
using System.IO;
 
module HTTP
{
Main() : void
{
def wc = WebClient();
def myStream = wc.OpenRead("http://rosettacode.org");
def sr = StreamReader(myStream);
WriteLine(sr.ReadToEnd());
myStream.Close()
}
}</lang>
 
=={{header|NetRexx}}==
{{trans|Java}}
An implementation of the [[#Java|Java]] version shown above; demonstrating NetRexx's ability to exploit the rich Java SDK.
 
<lang NetRexx>/* NetRexx */
options replace format comments java crossref symbols binary
 
import java.util.Scanner
import java.net.URL
 
do
rosettaUrl = "http://www.rosettacode.org"
sc = Scanner(URL(rosettaUrl).openStream)
loop while sc.hasNext
say sc.nextLine
end
catch ex = Exception
ex.printStackTrace
end
 
return</lang>
 
=={{header|NewLisp}}==
<lang NewLisp>
(get-url "http://www.rosettacode.org")
</lang>
 
=={{header|Nim}}==
<lang nim>import httpclient
 
var client = newHttpClient()
echo client.getContent "http://rosettacode.org"</lang>
 
=={{header|Objeck}}==
<lang objeck>use HTTP;
use Collection;
 
class HttpTest {
function : Main(args : String[]) ~ Nil {
lines := HttpClient->New()->Get("http://rosettacode.org");
each(i : lines) {
lines->Get(i)->As(String)->PrintLine();
};
}
}</lang>
 
=={{header|Objective-C}}==
<lang objc>#import <Foundation/Foundation.h>
 
int main (int argc, const char * argv[]) {
@autoreleasepool {
 
NSError *error;
NSURLResponse *response;
NSData *data = [NSURLConnection sendSynchronousRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://rosettacode.org"]]
returningResponse:&response
error:&error];
 
NSLog(@"%@", [[NSString alloc] initWithData:data
encoding:NSUTF8StringEncoding]);
 
}
return 0;
}</lang>
 
=={{header|OCaml}}==
<lang ocaml>
let () =
let url = "http://www.rosettacode.org" in
let _,_, page_content = make_request ~url ~kind:GET () in
print_endline page_content;
;;
</lang>
 
The source code of the function ''make_request'' is [[Web_Scraping/OCaml|here]].
 
=={{header|ooRexx}}==
Got this from a friend. Needs bsf4oorexx from sourceforge.
<br>Note that rosettacode.org (as used by java and NetRexx) does not permit this access!
<lang oorexx>url=.bsf~new("java.net.URL","http://teletext.orf.at")
sc =.bsf~new("java.util.Scanner",url~openStream)
loop while sc~hasNext
say sc~nextLine
End
::requires BSF.CLS -- get Java camouflaging support</lang>
{{out}}
massaged to avoid problems.
<pre><-!DOCTYPE HTML-
..
-/html-</pre>
 
=={{header|Oz}}==
When creating a file object, it is possible to specify an URL instead of a filename:
<lang oz>
declare
fun {GetPage Url}
F = {New Open.file init(url:Url)}
Contents = {F read(list:$ size:all)}
in
{F close}
Contents
end
in
{System.showInfo {GetPage "http://www.rosettacode.org"}}
</lang>
 
{{libheader|OzHttpClient}}
 
If you need more fine-grained control of the request, you could use a custom library:
<lang oz>
declare
[HTTPClient] = {Module.link ['x-ozlib://mesaros/net/HTTPClient.ozf']}
 
fun {GetPage Url}
Client = {New HTTPClient.urlGET
init(inPrms(toFile:false toStrm:true)
httpReqPrms
)}
OutParams
HttpResponseParams
in
{Client getService(Url ?OutParams ?HttpResponseParams)}
{Client closeAll(true)}
OutParams.sOut
end
in
{System.showInfo {GetPage "http://www.rosettacode.org"}}
</lang>
 
=={{header|Pascal}}==
{{works with|Free Pascal}}
Using [http://wiki.freepascal.org/fphttpclient fphttpclient]
<lang pascal>{$mode objfpc}{$H+}
uses fphttpclient;
 
var
s: string;
hc: tfphttpclient;
 
begin
hc := tfphttpclient.create(nil);
try
s := hc.get('http://www.example.com')
finally
hc.free
end;
writeln(s)
end.</lang>
 
 
{{works with|Free Pascal}} {{libheader|CThreads}} {{libheader|Classes}} {{libheader|httpsend}}
<lang pascal>program http;
 
{$mode objfpc}{$H+}
{$APPTYPE CONSOLE}
 
{$DEFINE DEBUG}
 
uses
{$IFDEF UNIX}{$IFDEF UseCThreads}
cthreads,
{$ENDIF}{$ENDIF}
Classes, httpsend; // Synapse httpsend class
{$R *.res}
 
var
Response: TStrings;
HTTPObj: THTTPSend;
 
begin
HTTPObj := THTTPSend.Create;
try
{ Stringlist object to capture HTML returned
from URL }
Response := TStringList.Create;
try
if HTTPObj.HTTPMethod('GET','http://wiki.lazarus.freepascal.org/Synapse') then
begin
{ Load HTTP Document into Stringlist }
Response.LoadFromStream(HTTPObj.Document);
{ Write the response to the console window }
Writeln(Response.Text);
end
else
Writeln('Error retrieving data');
 
finally
Response.Free;
end;
 
finally
HTTPObj.Free;
end;
 
// Keep console window open
Readln;
 
end.</lang>
 
=={{header|Peloton}}==
English dialect, short form:
<lang sgml>
<@ SAYURLLIT>http://rosettacode.org/wiki/Main_Page</@>
</lang>
 
English dialect, padded variable-length form:
<lang sgml>
<# SAY URLSOURCE LITERAL>http://rosettacode.org/wiki/Main_Page</#>
</lang>
 
=={{header|Perl}}==
 
===Core example===
{{libheader|HTTP/Tiny}}
{{works with|Perl|5.14}}
{{works with|Perl/HTTP/Tiny}}
 
This sample is nearly identical to the LWP sample except that it uses HTTP::Tiny which was added to the core libraries in [[Perl/5.14]].
 
<lang perl>use strict; use warnings;
require 5.014; # check HTTP::Tiny part of core
use HTTP::Tiny;
 
print( HTTP::Tiny->new()->get( 'http://rosettacode.org')->{content} );</lang>
 
===Library examples===
 
===={{libheader|LWP}}====
{{works with|Perl/LWP}}
 
Classic LWP sample.
 
<lang perl>use LWP::Simple qw/get $ua/;
$ua->agent(undef) ; # cloudflare blocks default LWP agent
print( get("http://www.rosettacode.org") );</lang>
 
or with more error-checking
 
<lang perl>use strict;
use LWP::UserAgent;
 
my $url = 'http://www.rosettacode.org';
my $response = LWP::UserAgent->new->get( $url );
 
$response->is_success or die "Failed to GET '$url': ", $response->status_line;
 
print $response->as_string</lang>
 
=={{header|Phix}}==
{{libheader|libcurl}}
Note that curl_easy_get_file() is better suited to multi-megabyte downloads than curl_easy_perform_ex().
<lang Phix>include builtins\libcurl.e
curl_global_init()
atom curl = curl_easy_init()
curl_easy_setopt(curl, CURLOPT_URL, "http://rosettacode.org/robots.txt")
object res = curl_easy_perform_ex(curl)
curl_easy_cleanup(curl)
curl_global_cleanup()
puts(1,res)</lang>
{{out}}
<pre>
User-agent: *
Allow: /mw/images/
Allow: /mw/skins/
Allow: /mw/title.png
Allow: /mw/resources/
Disallow: /w/
Disallow: /mw/
Disallow: /wiki/Special:
</pre>
 
=={{header|PHP}}==
<lang php>
readfile("http://www.rosettacode.org");
</lang>
 
=={{header|PicoLisp}}==
<lang PicoLisp>
(load "@lib/http.l")
 
(client "rosettacode.org" 80 NIL # Connect to rosettacode
(out NIL (echo)) ) # Echo to standard output
</lang>
 
=={{header|Pike}}==
<lang pike>
write("%s",Protocols.HTTP.get_url_data("http://www.rosettacode.org"));
</lang>
 
=={{header|PowerShell}}==
<lang powershell>
$wc = New-Object Net.WebClient
$wc.DownloadString('http://www.rosettacode.org')
</lang>
 
=={{header|Prolog}}==
Works with SWI-Prolog and library http/http_open. (Extract from the doc).
 
<lang Prolog>
:- use_module(library( http/http_open )).
 
http :-
http_open('http://www.rosettacode.org/',In, []),
copy_stream_data(In, user_output),
close(In).
</lang>
 
=={{header|PureBasic}}==
<lang PureBasic>
InitNetwork()
OpenConsole()
 
tmpdir$ = GetTemporaryDirectory()
filename$ = tmpdir$ + "PB_tempfile" + Str(Random(200000)) + ".html"
 
If ReceiveHTTPFile("http://rosettacode.org/wiki/Main_Page", filename$)
If ReadFile(1, filename$)
Repeat
PrintN(ReadString(1))
Until Eof(1)
Input()
; to prevent console from closing if on windows
CloseFile(1)
EndIf
DeleteFile(filename$)
EndIf
</lang>
 
Another solution using general networking commands
<lang PureBasic>
InitNetwork()
OpenConsole()
id = OpenNetworkConnection("rosettacode.org", 80)
SendNetworkString(id, "GET /wiki/Main_Page HTTP/1.1" + Chr(10) + "Host: rosettacode.org" + Chr(10) + Chr(10))
Repeat
If NetworkClientEvent(id) = 2
a$ = Space(1000)
ReceiveNetworkData(id, @a$, 1000)
out$ + a$
EndIf
Until FindString(out$, "</html>", 0)
PrintN(out$)
; next line only to prevent console from closing on Windows
Input()
</lang>
 
Of course you could use wget too.
 
=={{header|Python}}==
 
;Python 3:
Using the [http://docs.python.org/py3k/library/urllib.request.html urllib.request] module.
<lang python>
import urllib.request
print(urllib.request.urlopen("http://rosettacode.org").read())
</lang>
 
Using a more low-level [https://docs.python.org/3/library/http.client.html http.client] library.
<lang python>
from http.client import HTTPConnection
conn = HTTPConnection("example.com")
# If you need to use set_tunnel, do so here.
conn.request("GET", "/")
# Alternatively, you can use connect(), followed by the putrequest, putheader and endheaders functions.
result = conn.getresponse()
r1 = result.read() # This retrieves the entire contents.
</lang>
 
;Python 2:
Using the [http://docs.python.org/library/urllib.html urllib] library.
<lang python>
import urllib
print urllib.urlopen("http://rosettacode.org").read()
</lang>
 
Using the [http://docs.python.org/library/urllib2.html urllib2] library.
<lang python>
import urllib2
print urllib2.urlopen("http://rosettacode.org").read()
</lang>
 
 
{{libheader|Requests}}
{{works with|Python|2.7, 3.4–3.7}}
<lang Python>
import requests
print(requests.get("http://rosettacode.org").text)
</lang>
 
=={{header|R}}==
{{libheader|RCurl}}
{{libheader|XML}}
 
First, retrieve the webpage.
 
<lang R>
library(RCurl)
webpage <- getURL("http://rosettacode.org")
 
#If you are linking to a page that no longer exists and need to follow the redirect, use followlocation=TRUE
webpage <- getURL("http://www.rosettacode.org", .opts=list(followlocation=TRUE))
 
#If you are behind a proxy server, you will need to use something like:
webpage <- getURL("http://rosettacode.org",
.opts=list(proxy="123.123.123.123", proxyusername="domain\\username", proxypassword="mypassword", proxyport=8080))
#Don't forget that backslashes in your username or password need to be escaped!
</lang>
 
Now parse the html code into a tree and print the html.
 
<lang R>
library(XML)
pagetree <- htmlTreeParse(webpage )
pagetree$children$html
</lang>
 
=={{header|Racket}}==
<lang Racket>
#lang racket
(require net/url)
(copy-port (get-pure-port (string->url "http://www.rosettacode.org")
#:redirections 100)
(current-output-port))
</lang>
 
=={{header|Raku}}==
(formerly Perl 6)
{{libheader|LWP}}
Using LWP::Simple from [https://modules.raku.org/search/?q=LWP%3A%3ASimple the Raku ecosystem].
 
<lang perl6>use v6;
 
use LWP::Simple;
 
print LWP::Simple.get("http://www.rosettacode.org");
</lang>
 
or, without LWP::Simple:
 
<lang perl6>use v6;
 
my $socket = IO::Socket::INET.new(host => "www.rosettacode.org",
port => 80,);
$socket.print("GET / HTTP/1.0\r\n\r\n");
print $socket.recv();
$socket.close;
</lang>
 
=={{header|REALbasic}}==
REALBasic provides an HTTPSocket class for handling HTTP connections. The 'Get' method of the HTTPSocket is overloaded and can download data to a file or return data as a string, in both cases a timeout argument can be passed.
<lang REALbasic>
Dim sock As New HTTPSocket
Print(sock.Get("http://www.rosettacode.org", 10)) //set the timeout period to 10 seconds.
</lang>
 
=={{header|REBOL}}==
<lang REBOL>
print read http://rosettacode.org
</lang>
 
=={{header|REXX}}==
 
This script takes an URL as an argument and displays the content on the terminal. It uses the external program `curl` to perform both the acquisition of the data and the display.
 
<lang Rexx>/* ft=rexx */
/* GET2.RX - Display contents of an URL on the terminal. */
/* Usage: rexx get.rx http://rosettacode.org */
parse arg url .
'curl' url</lang>
 
A simple change to the script will redirect the output to an internal variable for internal processing. (Our "internal processing" in this case is to display it.)
 
<lang Rexx>/* ft=rexx */
/* GET2.RX - Display contents of an URL on the terminal. */
/* Usage: rexx get2.rx http://rosettacode.org */
parse arg url .
address system 'curl' url with output stem stuff.
do i = 1 to stuff.0
say stuff.i
end</lang>
 
Another simple change redirects the output to another external program like a shell pipe.
 
<lang Rexx>/* ft=rexx */
/* GET3.RX - Display contents of an URL on the terminal. */
/* Usage: rexx get3.rx http://rosettacode.org */
parse arg url .
address system 'curl' url with output fifo ''
address system 'more' with input fifo ''</lang>
 
=={{header|Ring}}==
<lang ring>
See download("http://rosettacode.org")
</lang>
 
=={{header|RLaB}}==
RLaB supports HTTP/FTP through its Read/Write facilities, which are organized around the concept
of Universal Resource Locator (URL),
:''protocol://address''
 
RLaB accepts the following values for ''protocol'':
:1. ''file'' or omitted, for generic text files or files in native binary format (partially compatible with ''matlab'' binary format);
 
:2. ''h5'' or ''hdf5'' for files that use Hierarhical Data Format 5 (HDF5) version 1.8.0, and later. Here ''protocol'' can be omitted while ''address'' has to end with ''.h5'' (file extension);
 
:3. ''http'', ''https'', or ''ftp'' for accessing the data and files on web- and ftp-servers;
 
:4. ''tcp'', for accessing sockets over tcp/ip protocol;
 
:5. ''serial'', for accessing serial port on Un*x type systems.
 
For these URLs RLaB provides an internal book-keeping: It keeps track of
the open ones and, say, upon quitting, closes them and releases the internal
resources it allocated for managing them.
 
For accessing URLs on world wide web RLaB implements the library cURL (libcurl) [http://curl.haxx.se] and its "easy" interface.
 
This said, this is how one would download financial data for Pfeizer from
Yahoo [http://ichart.finance.yahoo.com/table.csv?s=PFE&a=00&b=4&c=1982&d=00&e=10&f=2010&g=d&ignore=.csv].
 
<lang RLaB>
// get cvs data from Yahoo for Pfeizer (PFE)
url="http://ichart.finance.yahoo.com/table.csv?s=PFE&a=00&b=4&c=1982&d=00&e=10&f=2010&g=d&ignore=.csv";
 
opt = <<>>;
// opt.CURLOPT_PROXY = "your.proxy.here";
// opt.CURLOPT_PROXYPORT = YOURPROXYPORT;
// opt.CURLOPT_PROXYTYPE = "http";
open(url, opt);
x = readm(url);
close (url);
</lang>
 
=={{header|Ruby}}==
The simple way loads the entire content into memory, then prints it.
 
<lang ruby>
require 'open-uri'
 
print open("http://rosettacode.org") {|f| f.read}
</lang>
 
If the content might be large, the better way uses FileUtils.copy_stream.
 
<lang ruby>
require 'fileutils'
require 'open-uri'
 
open("http://rosettacode.org/") {|f| FileUtils.copy_stream(f, $stdout)}
</lang>
 
=={{header|Run BASIC}}==
<lang runbasic>print httpget$("http://rosettacode.org/wiki/Main_Page")</lang>
 
=={{header|Rust}}==
Cargo.toml
<lang toml>
[dependencies]
hyper = "0.6"
</lang>
src/main.rs
<lang rust>
//cargo-deps: hyper="0.6"
// The above line can be used with cargo-script which makes cargo's dependency handling more convenient for small programs
extern crate hyper;
 
use std::io::Read;
use hyper::client::Client;
 
fn main() {
let client = Client::new();
let mut resp = client.get("http://rosettacode.org").send().unwrap();
let mut body = String::new();
resp.read_to_string(&mut body).unwrap();
println!("{}", body);
}
</lang>
 
=={{header|Scala}}==
{{libheader|Scala}}
<lang scala>import scala.io.Source
 
object HttpTest extends App {
System.setProperty("http.agent", "*")
 
Source.fromURL("http://www.rosettacode.org").getLines.foreach(println)
}</lang>
 
=={{header|Scheme}}==
{{works with|Guile}}
 
<lang scheme>
; Use the regular expression module to parse the url (included with Guile)
(use-modules (ice-9 regex))
 
; Set the url and parse the hostname, port, and path into variables
(define url "http://www.rosettacode.org/wiki/HTTP")
(define r (make-regexp "^(http://)?([^:/]+)(:)?(([0-9])+)?(/.*)?" regexp/icase))
(define host (match:substring (regexp-exec r url) 2))
(define port (match:substring (regexp-exec r url) 4))
(define path (match:substring (regexp-exec r url) 6))
 
; Set port to 80 if it wasn't set above and convert from a string to a number
(if (eq? port #f) (define port "80"))
(define port (string->number port))
 
; Connect to remote host on specified port
(let ((s (socket PF_INET SOCK_STREAM 0)))
(connect s AF_INET (car (hostent:addr-list (gethostbyname host))) port)
 
; Send a HTTP request for the specified path
(display "GET " s)
(display path s)
(display " HTTP/1.0\r\n\r\n" s)
 
; Display the received HTML
(do ((c (read-char s) (read-char s))) ((eof-object? c))
(display c)))
</lang>
{{works with|Chicken Scheme}}
Using the [http://api.call-cc.org/doc/http-client http-client] library, this is trivial.
<lang scheme>
(use http-client)
(print
(with-input-from-request "http://google.com/"
#f read-string))
</lang>
 
=={{header|Seed7}}==
The [http://seed7.sourceforge.net/libraries/gethttp.htm gethttp.s7i] library
contains the function [http://seed7.sourceforge.net/libraries/gethttp.htm#getHttp%28in_string%29 getHttp],
which gets data specified by an URL using the HTTP protocol.
 
<lang seed7>
$ include "seed7_05.s7i";
include "gethttp.s7i";
 
const proc: main is func
begin
writeln(getHttp("www.rosettacode.org"));
end func;</lang>
 
=={{header|SenseTalk}}==
<lang sensetalk>put url "http://www.rosettacode.org"</lang>
 
=={{header|Sidef}}==
Sidef can load and use Perl modules:
<lang ruby>func get(url) {
var lwp = (
try { require('LWP::UserAgent') }
catch { warn "'LWP::UserAgent' is not installed!"; return nil }
)
var ua = lwp.new(agent => 'Mozilla/5.0')
if (var resp = ua.get(url); resp.is_success) {
return resp.decoded_content
}
return nil
}
 
print get("http://rosettacode.org")</lang>
 
=={{header|Smalltalk}}==
{{works with|Pharo}}
<lang smalltalk>
Transcript show: 'http://rosettacode.org' asUrl retrieveContents contentStream.
</lang>
 
=={{header|SNOBOL4}}==
{{works with|Macro SNOBOL4 in C}}
<lang snobol>-include "tcp.sno"
tcp.open(.conn,'www.rosettacode.org','http') :s(cont1)
terminal = "cannot open" :(end)
cont1 conn = "GET http://rosettacode.org/wiki/Main_Page HTTP/1.0" char(10) char(10)
while output = conn :s(while)
tcp.close(.conn)
end
</lang>
 
=={{header|Swift}}==
<lang Swift>import Foundation
 
let request = NSURLRequest(URL: NSURL(string: "http://rosettacode.org/")!)
 
// Using trailing closure
NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue()) {res, data, err in
// data is binary
if (data != nil) {
let string = NSString(data: data!, encoding: NSUTF8StringEncoding)
println(string)
}
}
 
CFRunLoopRun() // dispatch</lang>
 
=={{header|Tcl}}==
Note that the <code>http</code> package is distributed as part of Tcl.
 
<lang tcl>
package require http
set request [http::geturl "http://www.rosettacode.org"]
puts [http::data $request]
http::cleanup $request</lang>
 
=={{header|TSE SAL}}==
<lang TSE SAL>
 
DLL "<urlmon.dll>"
INTEGER PROC FNUrlGetSourceApiI(
INTEGER lpunknown,
STRING urlS : CSTRVAL,
STRING filenameS : CSTRVAL,
INTEGER dword,
INTEGER tlpbindstatuscallback
) : "URLDownloadToFileA"
END
 
// library: url: get: source <description></description> <version control></version control> <version>1.0.0.0.3</version> (filenamemacro=geturgso.s) [kn, ri, su, 13-04-2008 05:12:53]
PROC PROCUrlGetSource( STRING urlS, STRING filenameS )
FNUrlGetSourceApiI( 0, urlS, filenameS, 0, 0 )
END
 
PROC Main()
STRING s1[255] = "http://www.google.com/index.html"
STRING s2[255] = "c:\temp\ddd.txt"
IF ( NOT ( Ask( "url: get: source: urlS = ", s1, _EDIT_HISTORY_ ) ) AND ( Length( s1 ) > 0 ) ) RETURN() ENDIF
IF ( NOT ( AskFilename( "url: get: source: filenameS = ", s2, _DEFAULT_, _EDIT_HISTORY_ ) ) AND ( Length( s2 ) > 0 ) ) RETURN() ENDIF
PROCUrlGetSource( s1, s2 )
EditFile( s2 )
END
 
</lang>
 
=={{header|TUSCRIPT}}==
<lang tuscript>
$$ MODE TUSCRIPT
SET DATEN = REQUEST ("http://www.rosettacode.org")
*{daten}
</lang>
 
=={{header|UNIX Shell}}==
<lang bash>curl -s -L http://rosettacode.org/</lang>
 
<lang bash>lynx -source http://rosettacode.org/</lang>
 
<lang bash>wget -O - -q http://rosettacode.org/</lang>
 
<lang bash>lftp -c "cat http://rosettacode.org/"</lang>
 
{{works with|BSD}}
<lang bash>ftp -o - http://rosettacode.org 2>/dev/null</lang>
 
=={{header|VBScript}}==
{{Libheader|Microsoft.XmlHTTP}}
 
Based on code at [http://itknowledgeexchange.techtarget.com/vbscript-systems-administrator/how-to-retrieve-html-web-pages-with-vbscript-via-the-microsoftxmlhttp-object/ How to retrieve HTML web pages with VBScript via the Microsoft.XmlHttp object]
<lang vb>
Option Explicit
 
Const sURL="http://rosettacode.org/"
 
Dim oHTTP
Set oHTTP = CreateObject("Microsoft.XmlHTTP")
 
On Error Resume Next
oHTTP.Open "GET", sURL, False
oHTTP.Send ""
If Err.Number = 0 Then
WScript.Echo oHTTP.responseText
Else
Wscript.Echo "error " & Err.Number & ": " & Err.Description
End If
 
Set oHTTP = Nothing
</lang>
 
=={{header|Visual Basic}}==
{{Libheader|Microsoft.WinHttp}}
{{works with|Visual Basic|5}}
{{works with|Visual Basic|6}}
{{works with|VBA|Access 97}}
{{works with|VBA|6.5}}
{{works with|VBA|7.1}}
<lang vb>Sub Main()
Dim HttpReq As WinHttp.WinHttpRequest
' in the "references" dialog of the IDE, check
' "Microsoft WinHTTP Services, version 5.1" (winhttp.dll)
Const HTTPREQUEST_PROXYSETTING_PROXY As Long = 2
#Const USE_PROXY = 1
Set HttpReq = New WinHttp.WinHttpRequest
HttpReq.Open "GET", "http://rosettacode.org/robots.txt"
#If USE_PROXY Then
HttpReq.SetProxy HTTPREQUEST_PROXYSETTING_PROXY, "my_proxy:80"
#End If
HttpReq.SetTimeouts 1000, 1000, 1000, 1000
HttpReq.Send
Debug.Print HttpReq.ResponseText
End Sub</lang>
 
=={{header|Visual Basic .NET}}==
<lang vbnet>
Imports System.Net
 
Dim client As WebClient = New WebClient()
Dim content As String = client.DownloadString("http://www.google.com")
Console.WriteLine(content)
</lang>
 
=={{header|zkl}}==
File htmlGet.zkl. This uses HTTP/1.0 Protocol to avoid chunked data. Or use cURL (see https example).
<lang zkl>url := ask(0,"URL: ");
 
host := url;
dir := "/";
port := 80;
if (n := url.find("/")) { dir = url[n,*]; host = url[0,n]; }
if (n := host.find(":")) { port = host[n+1,*]; host = host[0,n]; }
 
get := "GET %s HTTP/1.0\r\nHost: %s:%s\r\n\r\n".fmt(dir,host,port.toInt());
println("-->",get);
server := Network.TCPClientSocket.connectTo(host,port);
server.write(get);
data := server.read(True);
println(data.text);</lang>
zkl htmlGet.zkl rosettacode.org/wiki/HTTP
{{out}}
<pre>
-->GET /wiki/HTTP HTTP/1.0
Host: rosettacode.org:80
 
 
HTTP/1.1 200 OK
Server: cloudflare-nginx
Date: Tue, 11 Mar 2014 08:31:43 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
Set-Cookie:XXX
23:50:00 GMT; path=/; domain=.rosettacode.org; HttpOnly
X-Powered-By: PHP/5.3.3-7+squeeze18
X-Content-Type-Options: nosniff
Content-Language: en
ETag: W/"rosettacode:pcache:idhash:3055-0!1!0!!en!2--20140227082903"
Vary: Accept-Encoding,Cookie
Cache-Control: s-maxage=86400, must-revalidate, max-age=0
Last-Modified: Thu, 27 Feb 2014 08:29:03 GMT
Age: 86011
X-Cache: HIT from prgmr2.rosettacode.org
X-Cache-Lookup: HIT from prgmr2.rosettacode.org:80
Via: 1.0 prgmr2.rosettacode.org (squid/3.1.6)
CF-RAY: 109665b7e92a012c-SJC
 
<!DOCTYPE html>
<html lang="en" dir="ltr" class="client-nojs">
<head>
<title>HTTP - Rosetta Code</title>
...
</pre>
 
=={{header|Zoea}}==
<lang Zoea>
program: http
input: 'https://zoea.co.uk/examples/test.txt'
output: 'hello from zoea'
</lang>
 
=={{header|Zsh}}==
<lang zsh>
zmodload zsh/net/tcp
ztcp example.com 80
fd=$REPLY
print -l -u $fd -- 'GET / HTTP/1.1' 'Host: example.com' ''
while read -u $fd -r -e -t 1; do; :; done
ztcp -c $fd
</lang>
 
{{omit from|Applesoft BASIC|No TCP/IP network support on Apple II}}
{{omit from|Brainf***}}
{{omit from|Commodore BASIC|Does not have network access}}
{{omit from|Inform 7|Does not have network access.}}
{{omit from|Integer BASIC|No TCP/IP network support on Apple II}}
{{omit from|Locomotive Basic|Does not have network access.}}
{{omit from|Lotus 123 Macro Scripting}}
{{omit from|M4}}
{{omit from|Maxima}}
{{omit from|ML/I}}
{{omit from|Openscad}}
{{omit from|PARI/GP}}
{{omit from|PostScript}}
{{omit from|Retro|Does not have network access.}}
{{omit from|SQL PL|Does not have network access}}
{{omit from|TI-83 BASIC|Does not have network access.}}
{{omit from|TI-89 BASIC|Does not have network access.}}
{{omit from|Unlambda|Does not have network access.}}
{{omit from|Yorick|Does not have network access.}}
{{omit from|ZX Spectrum Basic|Does not have network access.}}
Retrieved from "https://rosettacode.org/wiki/Special:MobileDiff/83902"