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/* stream server example */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <osmocom/core/select.h>
#include <osmocom/core/socket.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 osmo_stream_srv_test_cat[] = {
[DSTREAMTEST] = {
.name = "DSTREAMTEST",
.description = "STREAMSERVER-mode test",
.color = "\033[1;35m",
.enabled = 1, .loglevel = LOGL_DEBUG,
},
};
const struct log_info osmo_stream_srv_test_log_info = {
.filter_fn = NULL,
.cat = osmo_stream_srv_test_cat,
.num_cat = ARRAY_SIZE(osmo_stream_srv_test_cat),
};
static struct osmo_stream_srv_link *srv;
static struct osmo_stream_srv *conn;
void sighandler(int foo)
{
LOGP(DSTREAMTEST, LOGL_NOTICE, "closing STREAMSERVER.\n");
exit(EXIT_SUCCESS);
}
int read_cb(struct osmo_stream_srv *conn)
{
int bytes;
struct msgb *msg;
LOGP(DSTREAMTEST, LOGL_NOTICE, "receiving message from stream... ");
msg = msgb_alloc(1024, "STREAMSERVER/test");
if (msg == NULL) {
LOGPC(DSTREAMTEST, LOGL_ERROR, "cannot allocate message\n");
return 0;
}
bytes = osmo_stream_srv_recv(conn, msg);
if (bytes <= 0) {
if (bytes < 0)
LOGPC(DSTREAMTEST, LOGL_ERROR, "cannot receive message: %s\n", strerror(-bytes));
else
LOGPC(DSTREAMTEST, LOGL_ERROR, "client closed connection\n");
osmo_stream_srv_destroy(conn);
} else
LOGPC(DSTREAMTEST, LOGL_NOTICE, "got %d (%d) bytes: %s\n", bytes, msg->len, msgb_hexdump(msg));
msgb_free(msg);
return 0;
}
static int close_cb(struct osmo_stream_srv *dummy)
{
conn = NULL;
return 0;
}
static int accept_cb(struct osmo_stream_srv_link *srv, int fd)
{
char buf[OSMO_SOCK_NAME_MAXLEN];
if (conn != NULL) {
LOGP(DSTREAMTEST, LOGL_ERROR, "Sorry, this example only "
"support one client simultaneously\n");
return -1;
}
conn = osmo_stream_srv_create(tall_test, srv, fd, read_cb,
close_cb, NULL);
if (conn == NULL) {
LOGP(DSTREAMTEST, LOGL_ERROR,
"error while creating connection\n");
return -1;
}
osmo_sock_get_name_buf(buf, OSMO_SOCK_NAME_MAXLEN, fd);
LOGP(DSTREAMTEST, LOGL_NOTICE, "accepted client: %s\n", buf);
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));
if (ret < 1)
return 0;
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, "osmo_stream_srv_test");
if (msg == NULL) {
LOGP(DSTREAMTEST, LOGL_ERROR, "cannot allocate message\n");
return 0;
}
ptr = msgb_put(msg, ret);
memcpy(ptr, buf, ret);
osmo_stream_srv_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, "osmo_stream_srv_test");
msgb_talloc_ctx_init(tall_test, 0);
osmo_init_logging2(tall_test, &osmo_stream_srv_test_log_info);
log_set_log_level(osmo_stderr_target, 1);
log_set_category_filter(osmo_stderr_target, DLINP, 0, LOGL_INFO);
/*
* initialize stream srv.
*/
srv = osmo_stream_srv_link_create(tall_test);
if (srv == NULL) {
fprintf(stderr, "cannot create server link\n");
exit(EXIT_FAILURE);
}
osmo_stream_srv_link_set_addr(srv, "127.0.0.1");
osmo_stream_srv_link_set_port(srv, 10000);
osmo_stream_srv_link_set_accept_cb(srv, accept_cb);
if (osmo_stream_srv_link_open(srv) < 0) {
fprintf(stderr, "cannot open server link\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 = OSMO_FD_READ;
kbd_ofd->data = srv;
kbd_ofd->cb = kbd_cb;
osmo_fd_register(kbd_ofd);
LOGP(DSTREAMTEST, LOGL_NOTICE, "Entering main loop on %s\n", osmo_stream_srv_link_get_sockname(srv));
while(1) {
osmo_select_main(0);
}
}
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