1 files changed, 70 insertions, 0 deletions
diff --git a/v_windows/v/vlib/net/errors.v b/v_windows/v/vlib/net/errors.v
new file mode 100644
index 0000000..f6ada74
--- /dev/null
+++ b/v_windows/v/vlib/net/errors.v
@@ -0,0 +1,70 @@
+module net
+
+const (
+	errors_base = 0
+)
+
+// Well defined errors that are returned from socket functions
+pub const (
+	err_new_socket_failed   = error_with_code('net: new_socket failed to create socket',
+		errors_base + 1)
+	err_option_not_settable = error_with_code('net: set_option_xxx option not settable',
+		errors_base + 2)
+	err_option_wrong_type   = error_with_code('net: set_option_xxx option wrong type',
+		errors_base + 3)
+	err_port_out_of_range   = error_with_code('', errors_base + 5)
+	err_no_udp_remote       = error_with_code('', errors_base + 6)
+	err_connect_failed      = error_with_code('net: connect failed', errors_base + 7)
+	err_connect_timed_out   = error_with_code('net: connect timed out', errors_base + 8)
+	err_timed_out           = error_with_code('net: op timed out', errors_base + 9)
+	err_timed_out_code      = errors_base + 9
+)
+
+pub fn socket_error(potential_code int) ?int {
+	$if windows {
+		if potential_code < 0 {
+			last_error_int := C.WSAGetLastError()
+			last_error := wsa_error(last_error_int)
+			return error_with_code('net: socket error: ($last_error_int) $last_error',
+				int(last_error))
+		}
+	} $else {
+		if potential_code < 0 {
+			last_error := error_code()
+			return error_with_code('net: socket error: $last_error', last_error)
+		}
+	}
+
+	return potential_code
+}
+
+pub fn wrap_error(error_code int) ? {
+	$if windows {
+		enum_error := wsa_error(error_code)
+		return error_with_code('net: socket error: $enum_error', error_code)
+	} $else {
+		if error_code == 0 {
+			return
+		}
+		return error_with_code('net: socket error: $error_code', error_code)
+	}
+}
+
+// wrap_read_result takes a read result and sees if it is 0 for graceful
+// connection termination and returns none
+// e.g. res := wrap_read_result(C.recv(c.sock.handle, voidptr(buf_ptr), len, 0))?
+[inline]
+fn wrap_read_result(result int) ?int {
+	if result == 0 {
+		return none
+	}
+	return result
+}
+
+[inline]
+fn wrap_write_result(result int) ?int {
+	if result == 0 {
+		return none
+	}
+	return result
+}