/* telnet server thread entry */
void telnet_thread(void* parameter)
{
rt_err_t result,err;
rt_uint32_t event;
struct netbuf *buf;
struct netconn *conn, *newconn;
/* Create a new connection identifier. */
conn = netconn_new(NETCONN_TCP);
/* Bind connection to well known port number 7. */
netconn_bind(conn, NULL, TELNET_PORT);
/* Tell connection to go into listening mode. */
netconn_listen(conn);
/* register telnet device */
telnet->device.type = RT_Device_Class_Char;
telnet->device.init = telnet_init;
telnet->device.open = telnet_open;
telnet->device.close = telnet_close;
telnet->device.read = telnet_read;
telnet->device.write = telnet_write;
telnet->device.control = telnet_control;
/* no private */
telnet->device.user_data = RT_NULL;
/* register telnet device */
rt_device_register(&telnet->device, "telnet",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STREAM);
while (1)
{
rt_kprintf("telnet server waiting for connection\n");
/* Grab new connection. */
err = netconn_accept(conn, &newconn);
//if (err == RT_EOK) continue;
/* set network rx call back */
newconn->callback = rx_callback;
rt_kprintf("new telnet connection, switch console to telnet...\n");
/* Process the new connection. */
/* set console */
rt_console_set_device("telnet");
/* set finsh device */
finsh_set_device("telnet");
/* set init state */
telnet->state = STATE_NORMAL;
telnet->echo_mode = finsh_get_echo();
/* disable echo mode */
finsh_set_echo(0);
while (1)
{
/* try to send all data in tx ringbuffer */
telnet_process_tx(telnet, newconn);
/* receive network event */
result = rt_event_recv(telnet->nw_event,
NW_MASK, RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
RT_TICK_PER_SECOND, &event);
if (result == RT_EOK)
{
/* get event successfully */
if (event & NW_RX)
{
/* do a rx procedure */
err= netconn_recv(newconn, &buf);
if (buf != RT_NULL)
{
rt_uint8_t *data;
rt_uint16_t length;
/* get data */
netbuf_data(buf, (void**)&data, &length);
telnet_process_rx(telnet, data, length);
/* release buffer */
netbuf_delete(buf);
}
else
{
if (newconn->last_err == ERR_CLSD)
{
/* close connection */
telnet_process_close(telnet, newconn);
break;
}
}
}
if (event & NW_TX)
telnet_process_tx(telnet, newconn);
if (event & NW_CLOSED)
{
/* process close */
telnet_process_close(telnet, newconn);
break;
}
}
else if (result == -RT_ETIMEOUT)
{
if (newconn->state == NETCONN_CLOSE)
{
telnet_process_close(telnet, newconn);
break;
}
}
}
}
}
/* telnet server thread entry */
static void telnet_thread(void* parameter)
{
#define RECV_BUF_LEN 64
struct sockaddr_in addr;
socklen_t addr_size;
rt_uint8_t recv_buf[RECV_BUF_LEN];
rt_int32_t recv_len = 0;
if ((telnet->server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
rt_kprintf("telnet: create socket failed\n");
return;
}
addr.sin_family = AF_INET;
addr.sin_port = htons(TELNET_PORT);
addr.sin_addr.s_addr = INADDR_ANY;
rt_memset(&(addr.sin_zero), 0, sizeof(addr.sin_zero));
if (bind(telnet->server_fd, (struct sockaddr *)&addr, sizeof(struct sockaddr)) == -1)
{
rt_kprintf("telnet: bind socket failed\n");
return;
}
if (listen(telnet->server_fd, TELNET_BACKLOG) == -1)
{
rt_kprintf("telnet: listen socket failed\n");
return;
}
/* register telnet device */
telnet->device.type = RT_Device_Class_Char;
telnet->device.init = telnet_init;
telnet->device.open = telnet_open;
telnet->device.close = telnet_close;
telnet->device.read = telnet_read;
telnet->device.write = telnet_write;
telnet->device.control = telnet_control;
/* no private */
telnet->device.user_data = RT_NULL;
/* register telnet device */
rt_device_register(&telnet->device, "telnet",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STREAM);
while (1)
{
rt_kprintf("telnet server waiting for connection\n");
/* grab new connection */
if ((telnet->client_fd = accept(telnet->server_fd, (struct sockaddr * )&addr, &addr_size)) == -1)
{
continue;
}
rt_kprintf("new telnet client(%s:%d) connection, switch console to telnet...\n", inet_ntoa(addr.sin_addr), addr.sin_port);
/* process the new connection */
/* set console */
rt_console_set_device("telnet");
/* set finsh device */
finsh_set_device("telnet");
/* set init state */
telnet->state = STATE_NORMAL;
telnet->echo_mode = finsh_get_echo();
/* disable echo mode */
finsh_set_echo(0);
while (1)
{
/* try to send all data in tx ringbuffer */
send_to_client(telnet);
/* do a rx procedure */
if ((recv_len = recv(telnet->client_fd, recv_buf, RECV_BUF_LEN, 0)) > 0)
{
process_rx(telnet, recv_buf, recv_len);
}
else
{
/* close connection */
client_close(telnet);
break;
}
}
}
}
