https://github.com/sinatra/sinatra/issues/606 https://github.com/sinatra/sinatra/pull/603 On Jan 9, 2013, at 6:22 AM, Ivan Aleksandrovich wrote: > Hi there. I want to notice that after updating rack version from 1.4.1 to 1.4.3 the simple implementation of SSE stoped working for me(see application example in the attachment). > Gem list when that example works: > > bundler (1.2.2) > daemons (1.1.8) > eventmachine (0.12.10) > haml (3.1.7) > rack (1.4.1) > rack-protection (1.2.0) > rake (10.0.2) > rubygems-bundler (1.1.0) > rvm (1.11.3.5) > sinatra (1.3.3) > thin (1.5.0) > tilt (1.3.3) > > Gem list when that example doesn't work: > bundler (1.2.2) > daemons (1.1.8) > eventmachine (0.12.10) > haml (3.1.7) > rack (1.4.3) > rack-protection (1.2.0) > rake (10.0.2) > rubygems-bundler (1.1.0) > rvm (1.11.3.5) > sinatra (1.3.3) > thin (1.5.0) > tilt (1.3.3) > > My environment: > - Ruby version is ruby 1.9.3p327 (2012-11-10 revision 37606) [x86_64-linux] > - Ubuntu 12.04 (precise) 64-bit, Linux 3.2.0-35-generic, GNOME 3.4.2 > - Firefox 18.0 > What do I mean by SSE doesn't work? - It tries to reconnect forever(with delay of a few seconds which is default for EventSource implementation - see http://www.w3.org/TR/eventsource/#the-eventsource-interface for me info, reconnection time option). You may see these reconnection retries in server logs or by opening "Network" tab in firebug