Failed to create 5th http connection in iOS4

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Failed to create 5th http connection in iOS4

Hi all,

In OS3.1.3, I can create 6 UIWebView in a single view to watch 6 MJPEG stream simultaneously.

For the same application, it can run in iOS4 without any code modification. But it can only show 4 liveview feed at the same time. And I cannot send any request afterward. Is this a limitation for iOS4 for multitasking? Or I use some deprecated functions, and I need to replace them?

Any suggestion is helpful, and thanks in advance.

Best Regards, Jamie Chen

+1 A:

My first thought is to question memory usage. I am guessing you are trying this on a 3G S, and if true, this means you have 256 MB memory. The same is true for the iPad. The iPhone 4 has 512 MB.

Have you checked to see how much memory each UIWebView/Video Stream is chewing up?

Steven Noyes 2010-08-23 03:05:43

Even though the 3GS has 256MB of memory, *much* less than that will be available to your application.

St3fan 2010-08-23 03:06:58

Thanks for the suggestion, I'll check the memory usage.

陳政毅 2010-08-25 10:03:52

Are you connecting to the same host? This could be a server or firewall issue where it only allows 4 concurrent connections from one client to one host.

St3fan 2010-08-23 03:08:06

Yes, I am connecting to the same host.In OS3.1.3, I can create 6 connections to the host.But in iOS4, I can only create 4 connections to the same host.Therefore, my first thought is the connection counts are limited by iOS4 due to multi-tasking. But I can't find relative document about it.Maybe the header of requests sent from different OS are different.And it is block from server side. I'll check it, thanks.

陳政毅 2010-08-23 07:35:03

I found the reason for the problem. The connection counts is limited by Safari. This URL can test the number of parallel connection counts. http://www.spasche.net/files/parallel_connections/ And the connection count of Safari is 4 in iPhone4. Now, I am looking for solution to increase the connection count. But I am wondering if I can find out...

陳政毅 2010-08-25 12:28:51

ansaurus

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Failed to create 5th http connection in iOS4

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