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authorJordan Augé <jordan.auge+fdio@cisco.com>2021-04-26 15:51:22 +0200
committerJordan Augé <jordan.auge+fdio@cisco.com>2021-04-26 15:51:22 +0200
commit40d22455f1295d0bff005209bbf73e7e80799de7 (patch)
tree87791a7c398dcc866328e8faf8440cfd95eaa1fa /ctrl/facemgr/examples/mobility/mobility.c
parenta1a165c48c5422d9b302a6abec51e706f7cda934 (diff)
[HICN-701] facemgr: add priority controller mobility example
Change-Id: Id2c41164a59329e206e430e82f107cf5d4db8ae1 Signed-off-by: Jordan Augé <jordan.auge+fdio@cisco.com>
Diffstat (limited to 'ctrl/facemgr/examples/mobility/mobility.c')
-rw-r--r--ctrl/facemgr/examples/mobility/mobility.c88
1 files changed, 88 insertions, 0 deletions
diff --git a/ctrl/facemgr/examples/mobility/mobility.c b/ctrl/facemgr/examples/mobility/mobility.c
new file mode 100644
index 000000000..528951446
--- /dev/null
+++ b/ctrl/facemgr/examples/mobility/mobility.c
@@ -0,0 +1,88 @@
+/*
+ * Dummy server sending alternating bytes to all clients.
+ *
+ * This program can be used to trigger mobility events in the hICN forwarder, to
+ * switch from WiFi to LTE and back, at regular intervals.
+ *
+ * Test server using nc: nc -4kvul localhost 9533
+ */
+
+#include <arpa/inet.h> // inet_ntop
+#include <errno.h> // EINTR,. ..
+#include <netinet/in.h> // INET_ADDRSTRLEN, INET6_ADDRSTRLEN
+#include <stdio.h>
+#include <inttypes.h>
+
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <sys/timerfd.h>
+#include <sys/un.h> // sockaddr_un
+#include <unistd.h> // fcntl
+#include <fcntl.h> // fcntl
+
+#define MS2US(x) (x * 1000)
+
+/**
+ * \brief Main function
+ */
+int main(int argc, char **argv)
+{
+ int rc;
+
+ if (argc != 4) {
+ fprintf(stderr, "Usage: %s IP PORT INTERVAL\n", argv[0]);
+ fprintf(stderr, "\n");
+ fprintf(stderr, " IP Target hostname\n");
+ fprintf(stderr, " PORT Target port\n");
+ fprintf(stderr, " INTERVAL Interval between mobility events (in ms)\n");
+ fprintf(stderr, "\n");
+ exit(EXIT_FAILURE);
+ }
+
+ int interval = atoi(argv[3]);
+
+ int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+ if (fd < 0) {
+ perror("socket");
+ goto ERR_SOCKET;
+ }
+
+ struct sockaddr_in addr;
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ addr.sin_addr.s_addr = inet_addr(argv[1]);
+ addr.sin_port = htons(atoi(argv[2]));
+
+ if (connect(fd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
+ perror("connect");
+ goto ERR_CONNECT;
+ }
+
+ unsigned state = 0;
+ char buf[1];
+ for(;;) {
+ usleep(MS2US(interval));
+
+ buf[0] = state;
+ rc = send(fd, buf, 1, 0);
+ if (rc < 0) {
+ if (errno == ECONNREFUSED) {
+ continue;
+ }
+ perror("send");
+ goto ERR_SEND;
+ }
+
+ state = 1 - state;
+ }
+
+ close(fd);
+
+ exit(EXIT_SUCCESS);
+
+ERR_SEND:
+ERR_CONNECT:
+ close(fd);
+ERR_SOCKET:
+ exit(EXIT_FAILURE);
+}