@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2008-2021 Jonathan Schleifer <js@nil.im>
+ * Copyright (c) 2008-2022 Jonathan Schleifer <js@nil.im>
  *
  * All rights reserved.
  *
  * This file is part of ObjFW. It may be distributed under the terms of the
  * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
@@ -116,11 +116,11 @@
 		@throw [OFSetOptionFailedException exceptionWithObject: self
 								 errNo: errno];
 
 	_canBlock = canBlock;
 #elif defined(OF_WINDOWS)
-	u_long v = canBlock;
+	u_long v = !canBlock;
 
 	if (ioctlsocket(_socket, FIONBIO, &v) == SOCKET_ERROR)
 		@throw [OFSetOptionFailedException
 		    exceptionWithObject: self
 				  errNo: OFSocketErrNo()];
@@ -175,35 +175,40 @@
 
 	sender->length = (socklen_t)sizeof(sender->sockaddr);
 
 #ifndef OF_WINDOWS
 	if ((ret = recvfrom(_socket, buffer, length, 0,
-	    &sender->sockaddr.sockaddr, &sender->length)) < 0)
+	    (struct sockaddr *)&sender->sockaddr, &sender->length)) < 0)
 		@throw [OFReadFailedException
 		    exceptionWithObject: self
 			requestedLength: length
 				  errNo: OFSocketErrNo()];
 #else
 	if (length > INT_MAX)
 		@throw [OFOutOfRangeException exception];
 
 	if ((ret = recvfrom(_socket, buffer, (int)length, 0,
-	    &sender->sockaddr.sockaddr, &sender->length)) < 0)
+	    (struct sockaddr *)&sender->sockaddr, &sender->length)) < 0)
 		@throw [OFReadFailedException
 		    exceptionWithObject: self
 			requestedLength: length
 				  errNo: OFSocketErrNo()];
 #endif
 
-	switch (sender->sockaddr.sockaddr.sa_family) {
+	switch (((struct sockaddr *)&sender->sockaddr)->sa_family) {
 	case AF_INET:
 		sender->family = OFSocketAddressFamilyIPv4;
 		break;
 #ifdef OF_HAVE_IPV6
 	case AF_INET6:
 		sender->family = OFSocketAddressFamilyIPv6;
 		break;
+#endif
+#ifdef OF_HAVE_UNIX_SOCKETS
+	case AF_UNIX:
+		sender->family = OFSocketAddressFamilyUNIX;
+		break;
 #endif
 #ifdef OF_HAVE_IPX
 	case AF_IPX:
 		sender->family = OFSocketAddressFamilyIPX;
 		break;
@@ -274,12 +279,11 @@
 
 	if (length > SSIZE_MAX)
 		@throw [OFOutOfRangeException exception];
 
 	if ((bytesWritten = sendto(_socket, (void *)buffer, length, 0,
-	    (struct sockaddr *)&receiver->sockaddr.sockaddr,
-	    receiver->length)) < 0)
+	    (struct sockaddr *)&receiver->sockaddr, receiver->length)) < 0)
 		@throw [OFWriteFailedException
 		    exceptionWithObject: self
 			requestedLength: length
 			   bytesWritten: 0
 				  errNo: OFSocketErrNo()];
@@ -288,11 +292,11 @@
 
 	if (length > INT_MAX)
 		@throw [OFOutOfRangeException exception];
 
 	if ((bytesWritten = sendto(_socket, buffer, (int)length, 0,
-	    &receiver->sockaddr.sockaddr, receiver->length)) < 0)
+	    (struct sockaddr *)&receiver->sockaddr, receiver->length)) < 0)
 		@throw [OFWriteFailedException
 		    exceptionWithObject: self
 			requestedLength: length
 			   bytesWritten: 0
 				  errNo: OFSocketErrNo()];