These procedures directly call bsdsocket.library, the TCP library created by
your Internet Dialer (Miami, AmiTCP, TermiteTCP). They are much faster and more
friendly than the TCP: device equivalents, as they allow transfers to be
Non-Blocking. Normally, with TCP:, if there was no data to get, TCP: would lock
until it got some. Now, the program will simply ignore lack of data and move
on.
You need a lot of memory to run a Stack and Amos at the same time. I would say
three or four meg would do it, depending on what else you have running.
Commands (port 80 is http):
BSD_OPEN
Open the bsdsocket.library
BSD_CLOSE
Close the bsdsocket.library and all sockets attached
SOCK_OPENCONNECTION[HOST$,SPORT]
Open a connection to a computer in the fashion tcp://HOST$:SPORT/
Returns Socket ID
Example: SOCK_OPENCONNECTION["www.yahoo.com",80]
SOCK_OPENSERVER[SPORT]
Create a server port on your computer
Returns Socket ID
Example: SOCK_OPENSERVER[80]
SOCK_CHECKHOSTPORT[SOCKET]
Check Host Socket for a connection
Returns Connected Socket ID (use this for transfers) or -1
Example: SOCK_CHECKHOSTPORT[MYPORT]
SOCK_GETYOURHOST
Returns your host computer's name
Example: SOCK_GETYOURHOST : Print Param$
"as1s23-wmn.erols.com"
SOCK_SENDSTRING[SOCKET,A$]
SOCK_READSTRING[SOCKET,MXSIZE]
Writes and reads strings over a socket
SENDSTRING returns characters sent
READSTRING returns string received
SOCK_SEND[SOCKET,ADR,LEN]
SOCK_READ[SOCKET,ADR,LEN]
Send and receive large chunks of data over a socket
Both return numbers of characters sent/received
SOCK_CLOSE[SOCKET]
Close a socket and save some memory
SOCK_ERR[VARADDR]
Set a certain 4-byte memory address to receive TCP errors
SOCK_NEW
Create a new socket
Returns socket ID of new socket
SOCK_SETIO[SOCKET]
Set Non-Blocking, Asynchronous IO on a Socket
There are also a collection of commands especially for working with FTP, as it
uses a crazy system of ports and data links. I decided to save youall the
trouble of figuring out FTP. Grab the RFC for FTP. With these commands, you'll
have it all figured out.
FTP_OPENCONNECTION[HOST$,SPORT]
Open an FTP connection (ftp://HOST$:SPORT/)
FTP_HOSTSOCK
Returns Socket ID of Host machine (where to send FTP commands)
FTP_YOURSOCK
Returns your Socket ID for transfers (where to check for files)
FTP_YOURPORT$
Returns the PORT string to use
FTP_CLOSECONNECTION
Close FTP connections
'A Sample TCP/FTP Session
'All the major commands are used in here
(FTP port is 23)
FTP_OPENCONNECTION["ftp.wustl.edu",23]
Proc FTP_HOSTSOCK : HOSTSOCK=Param
Proc FTP_YOURSOCK : YOURSOCK=Param
Proc FTP_YOURPORT$ : YOURPORT$=Param$
E$=Chr$(13)+Chr$(10)
SOCK_SENDSTRING[HOSTSOCK,"USER anonymous"+E$]
SOCK_SENDSTRING[HOSTSOCK,"PASS uv334victoria.tc.ca"+E$]
Repeat
SOCK_READSTRING[HOSTSOCK,256]
Print Param$
Until Param$=""
SOCK_SENDSTRING[HOSTSOCK,"CD /pub/aminet/game/rpg/"+E$]
SOCK_SENDSTRING[HOSTSOCK,YOURPORT$]
Repeat
SOCK_READSTRING[HOSTSOCK,256]
Print Param$
Until Param$=""
SOCK_SENDSTRING[HOSTSOCK,"GET FinalExistence.lha"] : Rem Shameless, aren't I?
CONN=-1
Repeat
SOCK_CHECKHOSTPORT[YOURSOCK]
If Param>-1
CONN=Param
Reserve As Work 23,2048
Open Out 1,"FinalExistence.lha"
Repeat
SOCK_READ[CONN,Start(23),2048] : BYTES=Param
If BYTES>-1
Ssave 1,Start(23) to Start(23)+BYTES-1
End If
Until BYTES=-1
End If
Until CONN>-1
SOCK_CLOSE[CONN]
FTP_CLOSECONNECTION
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