Improve support for haiku

Author: kallisti5

src/lib.rs

@@ -425,7 +425,10 @@ impl<'a> DerefMut for MaybeUninitSlice<'a> {
 /// See [`Socket::set_tcp_keepalive`].
 #[derive(Debug, Clone)]
 pub struct TcpKeepalive {
-    #[cfg_attr(any(target_os = "openbsd", target_os = "vita"), allow(dead_code))]
+    #[cfg_attr(
+        any(target_os = "openbsd", target_os = "haiku", target_os = "vita"),
+        allow(dead_code)
+    )]
     time: Option<Duration>,
     #[cfg(not(any(
         target_os = "openbsd",
@@ -434,6 +437,7 @@ pub struct TcpKeepalive {
         target_os = "nto",
         target_os = "espidf",
         target_os = "vita",
+        target_os = "haiku",
     )))]
     interval: Option<Duration>,
     #[cfg(not(any(
@@ -444,6 +448,7 @@ pub struct TcpKeepalive {
         target_os = "nto",
         target_os = "espidf",
         target_os = "vita",
+        target_os = "haiku",
     )))]
     retries: Option<u32>,
 }
@@ -460,6 +465,7 @@ impl TcpKeepalive {
                 target_os = "nto",
                 target_os = "espidf",
                 target_os = "vita",
+                target_os = "haiku",
             )))]
             interval: None,
             #[cfg(not(any(
@@ -470,6 +476,7 @@ impl TcpKeepalive {
                 target_os = "nto",
                 target_os = "espidf",
                 target_os = "vita",
+                target_os = "haiku",
             )))]
             retries: None,
         }

tests/socket.rs

@@ -1391,6 +1391,7 @@ test!(IPv4 ttl, set_ttl(40));
     target_os = "redox",
     target_os = "solaris",
     target_os = "illumos",
+    target_os = "haiku",
 )))]
 test!(IPv4 tos, set_tos(96));
 
@@ -1405,6 +1406,7 @@ test!(IPv4 tos, set_tos(96));
     target_os = "solaris",
     target_os = "windows",
     target_os = "vita",
+    target_os = "haiku",
 )))]
 test!(IPv4 recv_tos, set_recv_tos(true));
 
@@ -1452,6 +1454,7 @@ test!(IPv6 tclass_v6, set_tclass_v6(96));
     target_os = "solaris",
     target_os = "windows",
     target_os = "vita",
+    target_os = "haiku",
 )))]
 test!(IPv6 recv_tclass_v6, set_recv_tclass_v6(true));