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authorMauro Sardara <msardara@cisco.com>2021-05-17 09:42:53 +0000
committerGerrit Code Review <gerrit@fd.io>2021-05-17 09:42:53 +0000
commit31eea8b286ded60b37fcc87de4beb025eb59924e (patch)
tree40b1f93a269ad5422d517bfa141957d0b7559a50 /ctrl/facemgr/examples/mobility
parent0982497d26806bad1a069766ac46a4f238d850ab (diff)
parent40d22455f1295d0bff005209bbf73e7e80799de7 (diff)
Merge "[HICN-701] facemgr: add priority controller mobility example"
Diffstat (limited to 'ctrl/facemgr/examples/mobility')
-rw-r--r--ctrl/facemgr/examples/mobility/Makefile23
-rw-r--r--ctrl/facemgr/examples/mobility/mobility.c88
2 files changed, 111 insertions, 0 deletions
diff --git a/ctrl/facemgr/examples/mobility/Makefile b/ctrl/facemgr/examples/mobility/Makefile
new file mode 100644
index 000000000..3b92d9d5f
--- /dev/null
+++ b/ctrl/facemgr/examples/mobility/Makefile
@@ -0,0 +1,23 @@
+EXEC = $(shell basename $$(pwd))
+CC = gcc
+
+CFLAGS = -std=gnu11 -O3 -Wall -Wextra -Wpedantic -Wstrict-aliasing
+
+SRC = $(wildcard *.c)
+OBJ = $(SRC:.c=.o)
+
+all: $(EXEC)
+
+${EXEC}: $(OBJ)
+ $(CC) -o $@ $^ $(LDFLAGS)
+
+%.o: %.c
+ $(CC) -o $@ -c $< $(CFLAGS)
+
+.PHONY: clean mrproper
+
+clean:
+ @rm -rf *.o
+
+mrproper: clean
+ @rm -rf $(EXEC)
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);
+}