Bugfix/patch db subscriber (#2652)

* fix socket sending empty patches

* do not timeout tcp connections, just poll them more

* switch from poll to tcp keepalive

core/startos/Cargo.toml

@@ -97,6 +97,7 @@ hex = "0.4.3"
 hmac = "0.12.1"
 http = "1.0.0"
 http-body-util = "0.1"
+hyper-util = { version = "0.1.5", features = ["tokio", "service"] }
 id-pool = { version = "0.2.2", default-features = false, features = [
   "serde",
   "u16",
@@ -159,6 +160,7 @@ serde_yaml = { package = "serde_yml", version = "0.0.10" }
 sha2 = "0.10.2"
 shell-words = "1"
 simple-logging = "2.0.2"
+socket2 = "0.5.7"
 sqlx = { version = "0.7.2", features = [
   "chrono",
   "runtime-tokio-rustls",