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From "许明" <hsum...@qq.com>
Subject 回复: 回复: 回复: why only 2 requests for async request can raise from a end-point?
Date Wed, 01 Jul 2015 06:14:28 GMT
sorry, it's a .net problem


.net - How can I programmatically remove the 2 connection limit in WebClient - Stack Overflow
http://stackoverflow.com/questions/866350/how-can-i-programmatically-remove-the-2-connection-limit-in-webclient



There is a limit in the number of simultaneous outgoing HTTP connections. I think you can
control this by using the System.Net.ServicePointManager.DefaultConnectionLimit static property
before creating the HttpWebRequest objects.




------------------ 原始邮件 ------------------
发件人: "许明";<hsuming@qq.com>;
发送时间: 2015年7月1日(星期三) 中午11:42
收件人: "users"<users@tomcat.apache.org>; 

主题: 回复: 回复: 回复: why only 2 requests for async request can raise from
a end-point?



Hi Christopher,


after your advise, i recheck all arround, and it's really raise from the c# test program.
 :(


there is a bug in WebRequest, i dont know what happend in this class, since requesting to
localhost is ok. and if pure Socket, or WebClient.DownloadStringAsync wont meet this bug.
if not your firm advice, i will never doubt about this.




Best Regards


------------------ 原始邮件 ------------------
发件人: "Christopher Schultz";<chris@christopherschultz.net>;
发送时间: 2015年7月1日(星期三) 凌晨2:00
收件人: "Tomcat Users List"<users@tomcat.apache.org>; 

主题: Re: 回复: 回复: why only 2 requests for async request can raise from a end-point?



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许明,

On 6/30/15 1:22 PM, 许明 wrote:
> yes, i connect tomcat directly, port is 8080.
> 
> I wrote the test tool in pure non-block mode, so just one thread
> in c#, and i used webbrowser, wget, telnet to perform this test
> too.

So you have a single thread managing multiple WS connections to
Tomcat? What I'm trying to determine is how many connections you are
actually opening. How many connections is the CLR willing to open to a
single WS endpoint?

> It's very strange that it wont happen when the tomcat run in 
> localhost, this problem exist only between different machines. and
> I had write a simple echo server for compare, the echo server can 
> accept many connection as expected.
> 
> now i run tomcat in embed mode, hope i can find out what
> happened...

I wonder if this is something the CLR is doing to you. Can you
instrument the client as well as the server?

- -chris
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