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libosmo-netif
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examples: add stream server/client example 

This patch adds a couple of examples that allow chatting between
the client and the server. For simplicity, the example only support
one client.
This commit is contained in:
Pablo Neira Ayuso 2011-10-05 13:07:01 +02:00
parent 7c20d4ef1e
commit 602df1ec4c
3 changed files with 282 additions and 1 deletions
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12
examples/Makefile.am
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@ -3,7 +3,9 @@ AM_CFLAGS=-Wall -g $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) $(LIBOSMOABIS_CFLA
AM_LDFLAGS = $(COVERAGE_LDFLAGS)
noinst_PROGRAMS = lapd-over-datagram-user \
lapd-over-datagram-network
lapd-over-datagram-network \
stream-client \
stream-server
lapd_over_datagram_user_SOURCES = lapd-over-datagram-user.c
lapd_over_datagram_user_LDADD = $(top_builddir)/src/libosmonetif.la \
@ -14,3 +16,11 @@ lapd_over_datagram_network_SOURCES = lapd-over-datagram-network.c
lapd_over_datagram_network_LDADD = $(top_builddir)/src/libosmonetif.la \
$(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) \
$(LIBOSMOABIS_LIBS)
stream_client_SOURCES = stream-client.c
stream_client_LDADD = $(top_builddir)/src/libosmonetif.la \
$(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS)
stream_server_SOURCES = stream-server.c
stream_server_LDADD = $(top_builddir)/src/libosmonetif.la \
$(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS)

124
examples/stream-client.c Normal file
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@ -0,0 +1,124 @@
/* stream client example. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <osmocom/core/select.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/application.h>
#include <osmocom/netif/stream.h>
#define DSTREAMTEST 0
struct log_info_cat stream_client_test_cat[] = {
[DSTREAMTEST] = {
.name = "DSTREAMTEST",
.description = "STREAMCLIENT-mode test",
.color = "\033[1;35m",
.enabled = 1, .loglevel = LOGL_DEBUG,
},
};
const struct log_info stream_client_test_log_info = {
.filter_fn = NULL,
.cat = stream_client_test_cat,
.num_cat = ARRAY_SIZE(stream_client_test_cat),
};
static struct stream_client_conn *conn;
void sighandler(int foo)
{
LOGP(DSTREAMTEST, LOGL_NOTICE, "closing stream.\n");
exit(EXIT_SUCCESS);
}
static int connect_cb(struct stream_client_conn *conn)
{
LOGP(DSTREAMTEST, LOGL_NOTICE, "connected\n");
return 0;
}
static int read_cb(struct stream_client_conn *conn, struct msgb *msg)
{
LOGP(DSTREAMTEST, LOGL_NOTICE, "received message from stream\n");
return 0;
}
static void *tall_test;
static int kbd_cb(struct osmo_fd *fd, unsigned int what)
{
char buf[1024];
struct msgb *msg;
uint8_t *ptr;
int ret;
ret = read(STDIN_FILENO, buf, sizeof(buf));
LOGP(DSTREAMTEST, LOGL_NOTICE, "read %d byte from keyboard\n", ret);
msg = msgb_alloc(1024, "STREAMCLIENT/test");
if (msg == NULL) {
LOGP(DSTREAMTEST, LOGL_ERROR, "stream_client: cannot allocate message\n");
return 0;
}
ptr = msgb_put(msg, strlen(buf));
memcpy(ptr, buf, ret);
stream_client_conn_send(conn, msg);
LOGP(DSTREAMTEST, LOGL_NOTICE, "message of %d bytes sent\n", msg->len);
return 0;
}
int main(void)
{
struct osmo_fd *kbd_ofd;
tall_test = talloc_named_const(NULL, 1, "stream_client_test");
osmo_init_logging(&stream_client_test_log_info);
log_set_log_level(osmo_stderr_target, 1);
/*
* initialize stream client.
*/
conn = stream_client_conn_create(tall_test);
if (conn == NULL) {
fprintf(stderr, "cannot create client\n");
exit(EXIT_FAILURE);
}
stream_client_conn_set_addr(conn, "127.0.0.1");
stream_client_conn_set_port(conn, 10000);
stream_client_conn_set_connect_cb(conn, connect_cb);
stream_client_conn_set_read_cb(conn, read_cb);
if (stream_client_conn_open(conn) < 0) {
fprintf(stderr, "cannot open client\n");
exit(EXIT_FAILURE);
}
kbd_ofd = talloc_zero(tall_test, struct osmo_fd);
if (!kbd_ofd) {
LOGP(DSTREAMTEST, LOGL_ERROR, "OOM\n");
exit(EXIT_FAILURE);
}
kbd_ofd->fd = STDIN_FILENO;
kbd_ofd->when = BSC_FD_READ;
kbd_ofd->data = conn;
kbd_ofd->cb = kbd_cb;
osmo_fd_register(kbd_ofd);
LOGP(DSTREAMTEST, LOGL_NOTICE, "Entering main loop\n");
while(1) {
osmo_select_main(0);
}
}

147
examples/stream-server.c Normal file
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@ -0,0 +1,147 @@
/* stream server example */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <osmocom/core/select.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/application.h>
#include <osmocom/netif/stream.h>
static void *tall_test;
#define DSTREAMTEST 0
struct log_info_cat stream_server_test_cat[] = {
[DSTREAMTEST] = {
.name = "DSTREAMTEST",
.description = "STREAMSERVER-mode test",
.color = "\033[1;35m",
.enabled = 1, .loglevel = LOGL_DEBUG,
},
};
const struct log_info stream_server_test_log_info = {
.filter_fn = NULL,
.cat = stream_server_test_cat,
.num_cat = ARRAY_SIZE(stream_server_test_cat),
};
static struct stream_server_link *server;
static struct stream_server_conn *conn;
void sighandler(int foo)
{
LOGP(DSTREAMTEST, LOGL_NOTICE, "closing STREAMSERVER.\n");
exit(EXIT_SUCCESS);
}
int read_cb(struct stream_server_conn *conn, struct msgb *msg)
{
LOGP(DSTREAMTEST, LOGL_NOTICE, "received message from stream\n");
return 0;
}
static int close_cb(struct stream_server_conn *dummy)
{
conn = NULL;
return 0;
}
static int accept_cb(struct stream_server_link *server, int fd)
{
if (conn != NULL) {
LOGP(DSTREAMTEST, LOGL_ERROR, "Sorry, this example only "
"support one client simultaneously\n");
return -1;
}
conn = stream_server_conn_create(tall_test, server, fd, read_cb,
close_cb, NULL);
if (conn == NULL) {
LOGP(DSTREAMTEST, LOGL_ERROR, "error in stream_server_receive\n");
return -1;
}
return 0;
}
static int kbd_cb(struct osmo_fd *fd, unsigned int what)
{
char buf[1024];
struct msgb *msg;
uint8_t *ptr;
int ret;
ret = read(STDIN_FILENO, buf, sizeof(buf));
LOGP(DSTREAMTEST, LOGL_NOTICE, "read %d byte from keyboard\n", ret);
if (conn == NULL) {
LOGP(DSTREAMTEST, LOGL_ERROR, "no client, skipping\n");
return 0;
}
msg = msgb_alloc(1024, "stream_server_test");
if (msg == NULL) {
LOGP(DSTREAMTEST, LOGL_ERROR, "stream_server: cannot allocate message\n");
return 0;
}
ptr = msgb_put(msg, strlen(buf));
memcpy(ptr, buf, strlen(buf));
stream_server_conn_send(conn, msg);
LOGP(DSTREAMTEST, LOGL_NOTICE, "message of %d bytes sent\n", msg->len);
return 0;
}
int main(void)
{
struct osmo_fd *kbd_ofd;
tall_test = talloc_named_const(NULL, 1, "stream_server_test");
osmo_init_logging(&stream_server_test_log_info);
log_set_log_level(osmo_stderr_target, 1);
/*
* initialize stream server.
*/
server = stream_server_link_create(tall_test);
if (server == NULL) {
fprintf(stderr, "cannot create client\n");
exit(EXIT_FAILURE);
}
stream_server_link_set_addr(server, "127.0.0.1");
stream_server_link_set_port(server, 10000);
stream_server_link_set_accept_cb(server, accept_cb);
if (stream_server_link_open(server) < 0) {
fprintf(stderr, "cannot open client\n");
exit(EXIT_FAILURE);
}
kbd_ofd = talloc_zero(tall_test, struct osmo_fd);
if (!kbd_ofd) {
LOGP(DSTREAMTEST, LOGL_ERROR, "OOM\n");
exit(EXIT_FAILURE);
}
kbd_ofd->fd = STDIN_FILENO;
kbd_ofd->when = BSC_FD_READ;
kbd_ofd->data = server;
kbd_ofd->cb = kbd_cb;
osmo_fd_register(kbd_ofd);
LOGP(DSTREAMTEST, LOGL_NOTICE, "Entering main loop\n");
while(1) {
osmo_select_main(0);
}
}