61b80d1b39
Uberproxy actively kills long standing connections after a set period of time. This change adds a 30 second keep alive period for SSE connections so connections can be reestablished after being killed by Uberproxy without DDS assuming the connection has disappeared. Change-Id: I18363da475bc5d785f85f5ffbec4102a2b7941af Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/183141 Reviewed-by: Gary Roumanis <grouma@google.com> Commit-Queue: Ben Konyi <bkonyi@google.com>