![]() Oddly pulling the power on all client devices and then starting them up simultaneously does not usually trigger the issue.ĭisabling the Windows Firewall on the server machine appears to resolve all problems. The problem is reproducible by physically disconnecting and reconnecting the Ethernet cables on all client devices - some will get through while others will go into Retransmission loops as above. After about 15 minutes the client gives up and reports the failure to the client application, which then disconnects and reconnects sometimes starting the retransmission cycle again and sometimes working perfectly. Client communication on metered internet connections. Every two minutes a TCP Retransmission is seen from the client network stack trying to re-send the original request. An exception is returned to the client when. When a connection throttle event occurs, Content Gateway continues processing all existing connections and queues new client connection requests until the connection count falls below the limit. ![]() Observing with Wireshark on the server shows that the HTTP request is received at the network layer but the server application doesn't see it. controls the maximum amount of time a connection can be throttled. A connection throttle event occurs when client or origin server connections reach 90 of half the configured limit (20,250 by default). Once they actually get a connection through they tend to continue working, since the browser re-uses existing connections for subsequent requests. they connect to one server successfully but not the other). (In some cases even a large number of clients also works perfectly I haven't been able to identify a specific trigger for this issue.)Īfter connecting about 12 such clients, some of the latter ones have trouble connecting to the server - they just sit waiting to connect without apparently loading anything (or sometimes they only load some of the resources, eg. Internet throttling, also known as data throttling and bandwidth throttling, is when your ISP limits your bandwidth or slows your connection to certain online. With a small number of clients, everything works perfectly. It's using a WebKit-based browser in Linux to do everything. The firewall has been configured with Allow rules to allow connections to the two servers (via TCP port-based rules) to the Local Subnet.Įach client makes three LongPoll connections to the server (two to HTTP.SYS and one to OWIN), in addition to whatever connections are needed to load the initial HTML/JS/image resources. Begin to VPN+Torrent on PC, wait until throttling begins Try to play back a 1080p video on your smartphone, try to choose one where you can see the quality difference (for example one with many text elements such as computer hardware benchmarks). ![]() NET HttpListener, the other using Microsoft OWIN and self-hosted ASP.NET WebAPI). I have an application running on Win8.1 (or WinServer2012, it makes no difference) that provides two HTTP server listeners in separate processes (one using HTTP.SYS via. ![]()
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