fail to find EAGAIN by experiment

eagain.zig

@@ -0,0 +1,12 @@
+const std = @import("std");
+
+const path = "eagain.sock";
+const spam: [0xffff]u8 = undefined;
+
+pub fn main() !void {
+    const stream = try std.net.connectUnixSocket(path);
+    _ = try std.posix.fcntl(stream.handle, std.c.F.SETFL, std.c.SOCK.NONBLOCK);
+    for (0..99999) |_| {
+        _ = try stream.write(&spam);
+    }
+}