socket
Hola,
qualcuno sa dirmi perch�:
#!/usr/bin/perl
use IO::Socket;
#use diagnostics;
my $host=$ARGV[0];
if(!$host){
die"...host???\n";
}
$|=1;
$socket=IO::Socket::INET->new(PeerAddr =>$host, PeerPort=>80,
Proto=>"TCP") || die"$!\n";
print $socket "GET / HTTP/1.0\r\n\r\n";
while(<$socket>){
print"$_\n";
}
close($socket);
FUNZIONA (scrivi e leggo dal socket),mentre al contrario:
#!/usr/bin/perl
use Socket;
#use diagnostics;
my $host=$ARGV[0];
if(!$host){
die"...host???\n";
}
$|=1;
socket(SO,PF_INET,SOCK_STREAM,getprotobyname('tcp')) || die"$!\n";
my $dest=sockaddr_in(80,inet_aton($host));
connect(SO,$dest) || die"$!\n";
print SO "GET / HTTP/1.0\r\n\r\n";
while(<SO>){
print"$_\n";
}
NON FUNZIONA...
ovvero per qualche oscuro motivo la lettura dal socket (<SO>), blocca la
scrittura sul socket (print SO).
Se invece non cerco di leggere dal socket (cio� non c'� <SO>) la
scrittura va a buon fine.
(Il tutto controverificato con uno sniffer).
Qualcuna sa dirmi perch�???
Grazie
Walter
|
0 |
|
waltervalenti
1/30/2002 4:11:14 PM
perl.beginners
29388 articles. 
4 followers.
3 Replies
693 Views
> -----Original Message-----
> From: walter valenti [mailto:waltervalenti@yahoo.it]
> Sent: Wednesday, January 30, 2002 11:11 AM
> To: beginners@perl.org
> Subject: socket=20
>=20
>=20
> Hola,
>=20
> qualcuno sa dirmi perch=E8:
(Using translator.dictionary.com, I see that the question is why the =
first=20
example "work" but the second blocks on the read, because the GET isn't
being=20
transmitted to the server.)
>=20
> #!/usr/bin/perl
>=20
> use IO::Socket;
> #use diagnostics;
> my $host=3D$ARGV[0];
> if(!$host){
> die"...host???\n";
> }
> $|=3D1;
>=20
> $socket=3DIO::Socket::INET->new(PeerAddr =3D>$host, PeerPort=3D>80,=20
> Proto=3D>"TCP") || die"$!\n";
> print $socket "GET / HTTP/1.0\r\n\r\n";
> while(<$socket>){
> print"$_\n";
> }
> close($socket);
>=20
>=20
> FUNZIONA (scrivi e leggo dal socket),mentre al contrario:
>=20
> #!/usr/bin/perl
>=20
> use Socket;
> #use diagnostics;
> my $host=3D$ARGV[0];
> if(!$host){
> die"...host???\n";
> }
> $|=3D1;
This line sets only current filehandle (STDOUT) to autoflush. It =
doesn't
affect your socket. The example with IO::Socket::INET works because
IO::Socket::new() calls autoflush(1) on the socket.
perldoc -f select
perldoc -m IO::Socket (look at sub new)
>=20
> socket(SO,PF_INET,SOCK_STREAM,getprotobyname('tcp')) || die"$!\n";
>=20
> my $dest=3Dsockaddr_in(80,inet_aton($host));
> connect(SO,$dest) || die"$!\n";
You need something like:
use IO::Handle;
SO->autoflush(1);
> print SO "GET / HTTP/1.0\r\n\r\n";
> while(<SO>){
> print"$_\n";
> }
>=20
> NON FUNZIONA...
> ovvero per qualche oscuro motivo la lettura dal socket=20
> (<SO>), blocca la=20
> scrittura sul socket (print SO).
> Se invece non cerco di leggere dal socket (cio=E8 non c'=E8 <SO>) la=20
> scrittura va a buon fine.
> (Il tutto controverificato con uno sniffer).
|
|
0 |
|
Bob_Showalter
1/30/2002 4:43:20 PM
--------------040503050709020409080803
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 8bit
Sorry, for the Italian, but for an error i send here mail mail insted of
perl-it !!!!!
I'm tryied to use send(SO,"GET / HTTP/1.0\r\n\r\n",0) and it work.
Thanks
Walter
Bob Showalter wrote:
>>-----Original Message-----
>>From: walter valenti [mailto:waltervalenti@yahoo.it]
>>Sent: Wednesday, January 30, 2002 11:11 AM
>>To: beginners@perl.org
>>Subject: socket
>>
>>
>>Hola,
>>
>>qualcuno sa dirmi perch�:
>>
>
>(Using translator.dictionary.com, I see that the question is why the first
>example "work" but the second blocks on the read, because the GET isn't
>being
>transmitted to the server.)
>
>>#!/usr/bin/perl
>>
>>use IO::Socket;
>>#use diagnostics;
>>my $host=$ARGV[0];
>>if(!$host){
>> die"...host???\n";
>>}
>>$|=1;
>>
>>$socket=IO::Socket::INET->new(PeerAddr =>$host, PeerPort=>80,
>>Proto=>"TCP") || die"$!\n";
>>print $socket "GET / HTTP/1.0\r\n\r\n";
>>while(<$socket>){
>> print"$_\n";
>>}
>>close($socket);
>>
>>
>>FUNZIONA (scrivi e leggo dal socket),mentre al contrario:
>>
>>#!/usr/bin/perl
>>
>>use Socket;
>>#use diagnostics;
>>my $host=$ARGV[0];
>>if(!$host){
>> die"...host???\n";
>>}
>>$|=1;
>>
>
>This line sets only current filehandle (STDOUT) to autoflush. It doesn't
>affect your socket. The example with IO::Socket::INET works because
>IO::Socket::new() calls autoflush(1) on the socket.
>
> perldoc -f select
> perldoc -m IO::Socket (look at sub new)
>
>>socket(SO,PF_INET,SOCK_STREAM,getprotobyname('tcp')) || die"$!\n";
>>
>>my $dest=sockaddr_in(80,inet_aton($host));
>>connect(SO,$dest) || die"$!\n";
>>
>
>You need something like:
>
> use IO::Handle;
> SO->autoflush(1);
>
>>print SO "GET / HTTP/1.0\r\n\r\n";
>>while(<SO>){
>> print"$_\n";
>>}
>>
>>NON FUNZIONA...
>>ovvero per qualche oscuro motivo la lettura dal socket
>>(<SO>), blocca la
>>scrittura sul socket (print SO).
>>Se invece non cerco di leggere dal socket (cio� non c'� <SO>) la
>>scrittura va a buon fine.
>>(Il tutto controverificato con uno sniffer).
>>
>
--------------040503050709020409080803--
|
|
0 |
|
waltervalenti
1/30/2002 5:13:18 PM
Why not just use FTP (File Transfert Protocol) ? See Net::FTP module Jos=E9. -----Original Message----- From: awards [mailto:awards@wanadoo.fr]=20 Sent: Thursday, August 14, 2003 6:09 PM To: beginners@perl.org Subject: Socket Hi, I would like to know if it is possible to transfer files from one computer = to another using socket and Perl(obviously). And which module should I look= at. Also is there any good site to teach socket?? Thank You. Anthony --=20 To unsubscribe, e-mail: beginners-unsubscribe@perl.org For additional commands, e-mail: beginners-help@perl.org **** DISCLAIMER **** "This e-mail and any attachment thereto may contain information which is co= nfidential and/or protected by intellectual property rights and are intende= d for the sole use of the recipient(s) named above.=20 Any use of the information contained herein (including, but not limited to,= total or partial reproduction, communication or distribution in any form) = by other persons than the designated recipient(s) is prohibited.=20 If you have received this e-mail in error, please notify the sender either = by telephone or by e-mail and delete the material from any computer". Thank you for your cooperation. For further information about Proximus mobile phone services please see our= website at http://www.proximus.be or refer to any Proximus agent.
|
|
0 |
|
Jose
8/14/2003 4:25:27 PM
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