Simple IPv6 socket to show case the receiving side of our 6LoWPAN
implementation.
Signed-off-by: Stefan Schmidt <stefan@xxxxxxxxxxxxxxx>
---
examples/Makefile.am | 3 +-
examples/af_inet6_rx.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 82 insertions(+), 1 deletion(-)
create mode 100644 examples/af_inet6_rx.c
diff --git a/examples/Makefile.am b/examples/Makefile.am
index 2d188a7..7cd67d9 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -1,5 +1,6 @@
bin_PROGRAMS = af_ieee802154_tx \
af_ieee802154_rx \
- af_packet_rx
+ af_packet_rx \
+ af_inet6_rx
EXTRA_DIST = README.examples
diff --git a/examples/af_inet6_rx.c b/examples/af_inet6_rx.c
new file mode 100644
index 0000000..d512471
--- /dev/null
+++ b/examples/af_inet6_rx.c
@@ -0,0 +1,80 @@
+/*
+ * IEEE 802.15.4 socket example
+ *
+ * Copyright (C) 2016 Samsung Electronics Co., Ltd.
+ *
+ * Author: Stefan Schmidt <stefan@xxxxxxxxxxxxxxx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* gcc af_inet6_rx.c -o af_inet6_rx */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#define MAX_PACKET_LEN 2048
+
+int main(int argc, char *argv[]) {
+ int ret, sd;
+ ssize_t len;
+ struct sockaddr_in6 src, dst;
+ unsigned char buf[MAX_PACKET_LEN + 1];
+ socklen_t addrlen;
+ char ipv6[INET6_ADDRSTRLEN];
+
+ /* Create IPv6 address family socket for the SOCK_DGRAM type */
+ sd = socket(PF_INET6, SOCK_DGRAM, 0);
+ if (sd < 0) {
+ perror("socket");
+ return 1;
+ }
+
+ /* Prepare source and destination socket address structs */
+ memset(&dst, 0, sizeof(dst));
+ memset(&src, 0, sizeof(src));
+ src.sin6_family = AF_INET6;
+ src.sin6_addr = in6addr_any;
+ /* Port within the compressed port range for potential NHC UDP compression */
+ src.sin6_port = htons(61617);
+
+ /* Bind socket on this side */
+ ret = bind(sd, (struct sockaddr *)&src, sizeof(src));
+ if (ret) {
+ perror("bind");
+ close(sd);
+ return 1;
+ }
+
+ addrlen = sizeof(dst);
+
+ /* Infinite loop receiving IPv6 packets and print out */
+ while (1) {
+ len = recvfrom(sd, buf, MAX_PACKET_LEN, 0, (struct sockaddr *)&dst, &addrlen);
+ if (len < 0) {
+ perror("recvfrom");
+ continue;
+ }
+ buf[len] = '\0';
+ inet_ntop(AF_INET6, &(dst.sin6_addr), ipv6, INET6_ADDRSTRLEN);
+ printf("Received (from %s): %s\n", ipv6, buf);
+ }
+
+ shutdown(sd, SHUT_RDWR);
+ close(sd);
+ return 0;
+}
--
2.5.5
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