AmigaOS Manual: Network resources - Revision history

Janne Peräaho at 13:19, 27 March 2019

2019-03-27T13:19:04Z

← Older revision		Revision as of 13:19, 27 March 2019
Line 75:		Line 75:
	The targeted web server is '''os4depot.net''', port is '''80''', and the requested page is '''index.php'''.		The targeted web server is '''os4depot.net''', port is '''80''', and the requested page is '''index.php'''.

	== Program 33: RequestWebPage.rexx ==		== Program 34: RequestWebPage.rexx ==
	<syntaxhighlight lang="rexx">		<syntaxhighlight lang="rexx">
	/*		/*

Janne Peräaho at 12:48, 27 March 2019

2019-03-27T12:48:37Z

← Older revision		Revision as of 12:48, 27 March 2019
Line 75:		Line 75:
	The targeted web server is '''os4depot.net''', port is '''80''', and the requested page is '''index.php'''.		The targeted web server is '''os4depot.net''', port is '''80''', and the requested page is '''index.php'''.

	== Program 23: RequestWebPage.rexx ==		== Program 33: RequestWebPage.rexx ==
	<syntaxhighlight lang="rexx">		<syntaxhighlight lang="rexx">
	/*		/*

Janne Peräaho: Added example program

2017-09-22T06:08:17Z

Added example program

← Older revision		Revision as of 06:08, 22 September 2017
Line 76:		Line 76:

	== Program 23: RequestWebPage.rexx ==		== Program 23: RequestWebPage.rexx ==
			<syntaxhighlight lang="rexx">
			/*
			** Request web page
			*/
			host = 'os4depot.net' /* Server address */
			port = '80' /* Port */
			resource = '/index.php' /* Path to file */
			userAgent = 'Mozilla/5.0 (Amiga; AmigaOS/4.1) ARexx/36.8 (ARexx script)' /* Client application */

			/* Compose HTTP request */
			request.method = 'GET' /* Retrieve information */
			request.uri = resource /* Path to file */
			request.procolVersion = 'HTTP/1.1' /* HTTP version */
			request.line = request.method \|\| ' ' \|\| request.uri \|\| ' ' \|\| request.protocolVersion

			request.header.host = 'Host: ' \|\| host \|\| ':' \|\| port
			request.header.userAgent = 'User-Agent: ' \|\| userAgent

			/--- Open connection ---/
			parameters = 'HOST=' \|\| host \|\| '/'
			parameters = parameters \|\| 'PORT=' \|\| port
			if ~open( 'network', 'TCP:' \|\| parameters, 'RW' ) then do
			say 'Failed to open connection.'
			exit 0
			end

			/--- Send request ---/
			writeln( 'network', request.line )
			writeln( 'network', request.header.host )
			writeln( 'network', request.header.userAgent )
			writeln( 'network', '' ) /* End of request */

			/--- Print host response ---/
			do until eof( 'network' )
			say readln( 'network' )
			end

			/--- Close connection ---/
			call close( 'network' )
			</syntaxhighlight>

Janne Peräaho at 22:22, 21 September 2017

2017-09-21T22:22:34Z

← Older revision		Revision as of 22:22, 21 September 2017
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	{\| class="wikitable"		{\| class="wikitable"
	\|+ Table 6-2. The most common servers/protocols		\|+ Table 11-1. The most common servers/protocols
	! Server/Protocol !! Port !! Service Name		! Server/Protocol !! Port !! Service Name
	\|-		\|-

Janne Peräaho: Corrected table number

2017-09-21T22:21:03Z

Corrected table number

← Older revision		Revision as of 22:21, 21 September 2017
Line 15:		Line 15:
	Much like with the IP addresses, a service name can be used instead of a port number. Note however, that the service names are available only for registered ports. To see a complete list of available service names, see [[AmigaOS Manual:Internet Preferences editor's Services list\|Internet Preferences editor's Services list]].		Much like with the IP addresses, a service name can be used instead of a port number. Note however, that the service names are available only for registered ports. To see a complete list of available service names, see [[AmigaOS Manual:Internet Preferences editor's Services list\|Internet Preferences editor's Services list]].

⚫	== Table 1: The most common servers/protocols ==
	{\| class="wikitable"		{\| class="wikitable"
		⚫	\|+ Table 6-2. The most common servers/protocols
	! Server/Protocol !! Port !! Service Name		! Server/Protocol !! Port !! Service Name
	\|-		\|-

Janne Peräaho at 21:58, 21 September 2017

2017-09-21T21:58:39Z

← Older revision		Revision as of 21:58, 21 September 2017
Line 1:		Line 1:
	A network interface configured in the Internet Preferences can be used for connecting to a remote computer and exchanging data with it. Depending on the selected network driver, you can use a modem or a network interface card for the connection.		A network interface configured in the [[AmigaOS Manual:Internet Preferences\|Internet Preferences]] can be used for connecting to a remote computer and exchanging data with it. Depending on the selected network driver, you can use a modem or a network interface card for the connection.

	A computer network forms when two or more computers are connected to each other so that they can exchange data. A networked computer, a node, can act as a server or a client, or both.		A computer network forms when two or more computers are connected to each other so that they can exchange data. A networked computer, a node, can act as a server or a client, or both.
Line 7:		Line 7:
	A node is said to be a client when it is running one or more applications which request services from server nodes. The typical client applications are web browsers and file transfer programs.		A node is said to be a client when it is running one or more applications which request services from server nodes. The typical client applications are web browsers and file transfer programs.

	Every node has a unique numeric identifier, an IP address. The IP addresses make it possible for clients to send requests to servers and for servers to send responses to clients. For human convenience a name can be assigned to an IP address. See Internet Preferences editor's Hosts list for assigning names for LAN (Local Area Network) nodes.		Every node has a unique numeric identifier, an IP address. The IP addresses make it possible for clients to send requests to servers and for servers to send responses to clients. For human convenience a name can be assigned to an IP address. See [[AmigaOS Manual:Internet Preferences editor's Hosts list\|Internet Preferences editor's Hosts list]] for assigning names for LAN (Local Area Network) nodes.

	Note ~~that the~~ Internet has its own name assignments for IP addresses. When you are connected to the Internet, your ISP (Internet Service Provider) provides a transparent name-to-IP-address translation for you.		{{Note\|The Internet has its own name assignments for IP addresses. When you are connected to the Internet, your ISP (Internet Service Provider) provides a transparent name-to-IP-address translation for you.}}

	Every server has a dedicated communication channel for receiving requests and sending responses. These channels are called ports. Ports are needed for the client-server communication with the IP addresses since there can be several concurrent servers on one computer and several client applications on the client computer. Without the ports requests would not reach the intended servers and the client applications would not receive the responses.		Every server has a dedicated communication channel for receiving requests and sending responses. These channels are called ports. Ports are needed for the client-server communication with the IP addresses since there can be several concurrent servers on one computer and several client applications on the client computer. Without the ports requests would not reach the intended servers and the client applications would not receive the responses.

	Much like with the IP addresses, a service name can be used instead of a port number. Note however, that the service names are available only for registered ports. To see a complete list of available service names, see Internet Preferences editor's Services list.		Much like with the IP addresses, a service name can be used instead of a port number. Note however, that the service names are available only for registered ports. To see a complete list of available service names, see [[AmigaOS Manual:Internet Preferences editor's Services list\|Internet Preferences editor's Services list]].

	== Table 1: The most common servers/protocols ==		== Table 1: The most common servers/protocols ==

Janne Peräaho at 21:51, 21 September 2017

2017-09-21T21:51:15Z

← Older revision		Revision as of 21:51, 21 September 2017
Line 47:		Line 47:

	= Sending a request to a server =		= Sending a request to a server =
	The TCP: device allows sending requests to the servers and receiving their responses. The procedure of the client to server communication using the TCP: device is:		The '''TCP:''' device allows sending requests to the servers and receiving their responses. The procedure of the client to server communication using the '''TCP:''' device is:

	# Open the TCP: device for reading and writing.		# Open the '''TCP:''' device for reading and writing.
	# Compose a request and write it to the device.		# Compose a request and write it to the device.
	# Read server's response from the device.		# Read server's response from the device.
	# Close the device.		# Close the device.

	When opening the TCP: device for sending a request to a server, the following parameters are available:		When opening the '''TCP:''' device for sending a request to a server, the following parameters are available:

	{\| class="wikitable"		{\| class="wikitable"
Line 65:		Line 65:
	\| SERVICE or S \|\| S=SERVICE/K \|\| Name of the service on the server to which the request will be sent. This parameter is mutually exclusive with the PORT parameter.		\| SERVICE or S \|\| S=SERVICE/K \|\| Name of the service on the server to which the request will be sent. This parameter is mutually exclusive with the PORT parameter.
	\|}		\|}
	Parameters must be separated with slash (/). For example:		Parameters must be separated with slash ('''/'''). For example:

	<syntaxhighlight lang="rexx">		<syntaxhighlight lang="rexx">
Line 73:		Line 73:
	Every server has its own format for requests and responses; they have their own communication protocols. In the following example a web page request is sent to a web server and the response is printed to Shell.		Every server has its own format for requests and responses; they have their own communication protocols. In the following example a web page request is sent to a web server and the response is printed to Shell.

	The targeted web server is os4depot.net, port is 80, and the requested page is index.php.		The targeted web server is '''os4depot.net''', port is '''80''', and the requested page is '''index.php'''.

	== Program 23: RequestWebPage.rexx ==		== Program 23: RequestWebPage.rexx ==

Janne Peräaho: /* Sending a request to a server */

2017-09-21T19:12:22Z

Sending a request to a server

← Older revision		Revision as of 19:12, 21 September 2017
Line 61:		Line 61:
	\| HOST or H \|\| H=HOST \|\| Server's IP address or server's name.		\| HOST or H \|\| H=HOST \|\| Server's IP address or server's name.
	\|-		\|-
	\| PORT or P \|\| P=PORT \|\| Server's port number to which the request will be send. This parameter is mutually exclusive with the SERVICE parameter.		\| PORT or P \|\| P=PORT/K \|\| Server's port number to which the request will be send. This parameter is mutually exclusive with the SERVICE parameter.
	\|-		\|-
	\| SERVICE or S \|\| S=SERVICE \|\| Name of the service on the server to which the request will be sent. This parameter is mutually exclusive with the PORT parameter.		\| SERVICE or S \|\| S=SERVICE/K \|\| Name of the service on the server to which the request will be sent. This parameter is mutually exclusive with the PORT parameter.
	\|}		\|}
	Parameters must be separated with slash (/). For example:		Parameters must be separated with slash (/). For example:

Janne Peräaho: Created page with "A network interface configured in the Internet Preferences can be used for connecting to a remote computer and exchanging data with it. Depending on the selected network drive..."

2017-09-21T18:54:54Z

Created page with "A network interface configured in the Internet Preferences can be used for connecting to a remote computer and exchanging data with it. Depending on the selected network drive..."

New page

A network interface configured in the Internet Preferences can be used for connecting to a remote computer and exchanging data with it. Depending on the selected network driver, you can use a modem or a network interface card for the connection.

A computer network forms when two or more computers are connected to each other so that they can exchange data. A networked computer, a node, can act as a server or a client, or both.

Server's role in the network is to provide functions or services to the client nodes. The typical servers are web and file servers: a web server returns web pages to the clients and a file server returns files. One server node can host several servers at the same time.

A node is said to be a client when it is running one or more applications which request services from server nodes. The typical client applications are web browsers and file transfer programs.

Every node has a unique numeric identifier, an IP address. The IP addresses make it possible for clients to send requests to servers and for servers to send responses to clients. For human convenience a name can be assigned to an IP address. See Internet Preferences editor's Hosts list for assigning names for LAN (Local Area Network) nodes.

Note that the Internet has its own name assignments for IP addresses. When you are connected to the Internet, your ISP (Internet Service Provider) provides a transparent name-to-IP-address translation for you.

Every server has a dedicated communication channel for receiving requests and sending responses. These channels are called ports. Ports are needed for the client-server communication with the IP addresses since there can be several concurrent servers on one computer and several client applications on the client computer. Without the ports requests would not reach the intended servers and the client applications would not receive the responses.

Much like with the IP addresses, a service name can be used instead of a port number. Note however, that the service names are available only for registered ports. To see a complete list of available service names, see Internet Preferences editor's Services list.

== Table 1: The most common servers/protocols ==
{| class="wikitable"
! Server/Protocol !! Port !! Service Name
|-
| File Transfer Protocol (FTP) || 21 || ftp
|-
| Secure Shell (SSH) || 22 || ssh
|-
| Telnet remote login service || 23 || telnet
|-
| Simple Mail Transfer Protocol (SMTP) || 25 || smtp
|-
| Domain Name System (DNS) service || 53 || domain
|-
| Hypertext Transfer Protocol (HTTP) || 80 || www
|-
| Post Office Protocol (POP3) || 110 || pop3
|-
| Network News Transfer Protocol (NNTP) || 119 || nntp
|-
| Network Time Protocol (NTP) || 123 || ntp
|-
| Internet Message Access Protocol (IMAP) || 143 || imap
|-
| Simple Network Management Protocol (SNMP) || 161 || snmp
|-
| Internet Relay Chat (IRC) || 194 || irc
|-
| Secure Hypertext Transfer Protocol (HTTPS) || 443 || https
|}

= Sending a request to a server =
The TCP: device allows sending requests to the servers and receiving their responses. The procedure of the client to server communication using the TCP: device is:

# Open the TCP: device for reading and writing.
# Compose a request and write it to the device.
# Read server's response from the device.
# Close the device.

When opening the TCP: device for sending a request to a server, the following parameters are available:

{| class="wikitable"
! Keyword !! Template !! Description
|-
| HOST or H || H=HOST || Server's IP address or server's name.
|-
| PORT or P || P=PORT || Server's port number to which the request will be send. This parameter is mutually exclusive with the SERVICE parameter.
|-
| SERVICE or S || S=SERVICE || Name of the service on the server to which the request will be sent. This parameter is mutually exclusive with the PORT parameter.
|}
Parameters must be separated with slash (/). For example:

<syntaxhighlight lang="rexx">
OPEN( 'network', 'TCP:HOST=os4depot.net/PORT=80', 'RW' )
</syntaxhighlight>

Every server has its own format for requests and responses; they have their own communication protocols. In the following example a web page request is sent to a web server and the response is printed to Shell.

The targeted web server is os4depot.net, port is 80, and the requested page is index.php.

== Program 23: RequestWebPage.rexx ==