From 0ba64e9ce3afcc400b55f7349c838e2d00e3c00d Mon Sep 17 00:00:00 2001
From: Ekin Dursun <ekindursun@gmail.com>
Date: Fri, 7 Jun 2024 14:20:04 +0300
Subject: [PATCH] Add ECONNREFUSED to sendto

---
 lib/std/posix.zig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/std/posix.zig b/lib/std/posix.zig
index 196a268d7f..56dbcfa1c6 100644
--- a/lib/std/posix.zig
+++ b/lib/std/posix.zig
@@ -5933,6 +5933,8 @@ pub fn sendmsg(
 pub const SendToError = SendMsgError || error{
     /// The destination address is not reachable by the bound address.
     UnreachableAddress,
+    /// The destination address is not listening.
+    ConnectionRefused,
 };
 
 /// Transmit a message to another socket.
@@ -6005,6 +6007,7 @@ pub fn sendto(
             .AGAIN => return error.WouldBlock,
             .ALREADY => return error.FastOpenAlreadyInProgress,
             .BADF => unreachable, // always a race condition
+            .CONNREFUSED => return error.ConnectionRefused,
             .CONNRESET => return error.ConnectionResetByPeer,
             .DESTADDRREQ => unreachable, // The socket is not connection-mode, and no peer address is set.
             .FAULT => unreachable, // An invalid user space address was specified for an argument.
@@ -6066,6 +6069,7 @@ pub fn send(
         error.AddressNotAvailable => unreachable,
         error.SocketNotConnected => unreachable,
         error.UnreachableAddress => unreachable,
+        error.ConnectionRefused => unreachable,
         else => |e| return e,
     };
 }