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　晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 . Prv8 Shell

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Directory : /usr/share/doc/perl-Net-SSLeay/examples/

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Current File : //usr/share/doc/perl-Net-SSLeay/examples/bio.pl

#!/usr/bin/perl -w
# bio.pl mikem@open.com.au
#
# Test and demonstrate BIO interface

use Net::SSLeay qw(die_now);

$data = '0123456789' x 100;
$len = length($data);

$b = &Net::SSLeay::BIO_new(&Net::SSLeay::BIO_s_mem())
    or die_now("Could not create memory BIO $!");

&Net::SSLeay::BIO_write($b, $data)
    or die_now("Could not write memory BIO $!");

# Should now have 1000 bytes in BIO
$pending =  &Net::SSLeay::BIO_pending($b);
die("Incorrect result from BIO_pending: $pending. Should be $len")
    unless $pending == $len;

# Partial read of 9 bytes
$len = 9;
$part = &Net::SSLeay::BIO_read($b, $len);
$nlen = length($part);
die("Incorrect result from BIO_read: $len. Should be 9")
    unless $nlen == $len;

die("Incorrect data from BIO_read: $len. Should be 012345678")
    unless $part eq '012345678';

# Should be 991 bytes left
$len = 991;
$pending =  &Net::SSLeay::BIO_pending($b);
die("Incorrect result from BIO_pending: $pending. Should be $len")
    unless $pending == $len;

# Read the rest
$part = &Net::SSLeay::BIO_read($b);
$nlen = length($part);
die("Incorrect result from BIO_read: $len. Should be 991")
    unless $len == $nlen;

&Net::SSLeay::BIO_free($b);

print "OK\n";
exit;

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