异步和同步http请求超时机制

最新推荐文章于 2024-12-06 13:45:55 发布

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最新推荐文章于 2024-12-06 13:45:55 发布

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本文介绍了异步和同步HTTP请求的超时设置。在异步请求中，通过设置timeout参数来控制超时时间，例如在Perl的AnyEvent::HTTP模块中。同步请求中，LWP::UserAgent模块的timeout方法用于设定超时时间，如果超过设定值，请求将失败并抛出错误。默认超时时间通常为3分钟。

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异步超时设置:

例子:
Example: do a simple HTTP GET request for http://www.nethype.de/ and print the response body.

   http_request GET => "http://www.nethype.de/", sub {
      my ($body, $hdr) = @_;
      print "$body\n";
   };
   
 The callback will be called with the response body data as first argument (or undef if an error occurred)

回调会被调用第一个参数是响应的内容,如果错误发生就是undef
 
jrhmpt01:/root/async# cat a6.pl 
use AnyEvent::HTTP;
use HTTP::Date qw(time2iso str2time time2iso time2isoz);
my $cv = AnyEvent->condvar;
   http_request GET => 'http://120.55.118.6:3000/api/env?ip=192.168.32.101', sub {
      my ($body, $hdr) = @_;
      $time2=time2iso(time());
print "\$time2 is $time2\n";
      print "$body\n";
   };
$time1=time2iso(time());
print "\$time1 is $time1\

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