Windows UDP support.

This implements the basic UDP functionality for Windows (required
for ZeroTier for example).  We have also introduced a UDP test suite
to validate that this actually works.  While here a few Windows
compilation warnings / nits were fixed.

1 files changed, 67 insertions, 0 deletions

diff --git a/src/platform/windows/win_sockaddr.c b/src/platform/windows/win_sockaddr.c
new file mode 100644
index 00000000..0fa6dd51
--- /dev/null
+++ b/src/platform/windows/win_sockaddr.c
@@ -0,0 +1,67 @@
+//
+// Copyright 2017 Garrett D'Amore <garrett@damore.org>
+// Copyright 2017 Capitar IT Group BV <info@capitar.com>
+//
+// This software is supplied under the terms of the MIT License, a
+// copy of which should be located in the distribution where this
+// file was obtained (LICENSE.txt).  A copy of the license may also be
+// found online at https://opensource.org/licenses/MIT.
+//
+
+#include "core/nng_impl.h"
+
+#ifdef NNG_PLATFORM_WINDOWS
+
+#include <string.h>
+
+int
+nni_win_nn2sockaddr(SOCKADDR_STORAGE *ss, const nni_sockaddr *sa)
+{
+	SOCKADDR_IN * sin;
+	SOCKADDR_IN6 *sin6;
+
+	switch (sa->s_un.s_family) {
+	case NNG_AF_INET:
+		sin = (void *) ss;
+		memset(sin, 0, sizeof(*sin));
+		sin->sin_family      = PF_INET;
+		sin->sin_port        = sa->s_un.s_in.sa_port;
+		sin->sin_addr.s_addr = sa->s_un.s_in.sa_addr;
+		return (sizeof(*sin));
+
+	case NNG_AF_INET6:
+		sin6 = (void *) ss;
+		memset(sin6, 0, sizeof(*sin6));
+		sin6->sin6_family = PF_INET6;
+		sin6->sin6_port   = sa->s_un.s_in6.sa_port;
+		memcpy(sin6->sin6_addr.s6_addr, sa->s_un.s_in6.sa_addr, 16);
+		return (sizeof(*sin6));
+	}
+	return (-1);
+}
+
+int
+nni_win_sockaddr2nn(nni_sockaddr *sa, const SOCKADDR_STORAGE *ss)
+{
+	SOCKADDR_IN * sin;
+	SOCKADDR_IN6 *sin6;
+
+	switch (ss->ss_family) {
+	case PF_INET:
+		sin                     = (void *) ss;
+		sa->s_un.s_in.sa_family = NNG_AF_INET;
+		sa->s_un.s_in.sa_port   = sin->sin_port;
+		sa->s_un.s_in.sa_addr   = sin->sin_addr.s_addr;
+		return (0);
+
+	case PF_INET6:
+		sin6                     = (void *) ss;
+		sa->s_un.s_in6.sa_family = NNG_AF_INET6;
+		sa->s_un.s_in6.sa_port   = sin6->sin6_port;
+		memcpy(sa->s_un.s_in6.sa_addr, sin6->sin6_addr.s6_addr, 16);
+		return (0);
+	}
+	return (-1);
+}
+
+#endif // NNG_PLATFORM_WINDOWS
\ No newline at end of file