player/Project/Src/rt-thread/examples/network/udpclient.c

#include <rtthread.h>

#include <sys/socket.h> /* ʹ<><CAB9>BSD socket<65><74><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>sockets.hͷ<68>ļ<EFBFBD> */
#include "netdb.h"

#define DEBUG_UDP_CLIENT

#define DBG_ENABLE
#define DBG_SECTION_NAME               "UDP"
#ifdef DEBUG_UDP_CLIENT
#define DBG_LEVEL                      DBG_LOG
#else
#define DBG_LEVEL                      DBG_INFO /* DBG_ERROR */
#endif
#define DBG_COLOR
#include <rtdbg.h>

static int started = 0;
static int is_running = 0;
static char url[256];
static int port = 8080;
static int count = 10;
const char send_data[] = "This is UDP Client from RT-Thread.\n"; /* <20><><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><C3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */

static void udpclient(void *arg)
{
    int sock;
    struct hostent *host;
    struct sockaddr_in server_addr;

    /* ͨ<><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD>url<72><6C><EFBFBD><EFBFBD>host<73><74>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
    host = (struct hostent *) gethostbyname(url);
    if (host == RT_NULL)
    {
        LOG_E("Get host by name failed!");
        return;
    }

    /* <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>socket<65><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>SOCK_DGRAM<41><4D>UDP<44><50><EFBFBD><EFBFBD> */
    if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
    {
        LOG_E("Create socket error");
        return;
    }

    /* <20><>ʼ<EFBFBD><CABC>Ԥ<EFBFBD><D4A4><EFBFBD>ӵķ<D3B5><C4B7><EFBFBD><EFBFBD>˵<EFBFBD>ַ */
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(port);
    server_addr.sin_addr = *((struct in_addr *)host->h_addr);
    rt_memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero));

    started = 1;
    is_running = 1;

    /* <20>ܼƷ<DCBC><C6B7><EFBFBD>count<6E><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
    while (count && is_running)
    {
        /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD><DDB5><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><D4B6> */
        sendto(sock, send_data, rt_strlen(send_data), 0,
               (struct sockaddr *)&server_addr, sizeof(struct sockaddr));

        /* <20>߳<EFBFBD><DFB3><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ʱ<EFBFBD><CAB1> */
        rt_thread_mdelay(1000);

        /* <20><><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5>һ */
        count --;
    }

    if (count == 0)
    {
        LOG_I("UDP client send data finished!");
    }

    /* <20>ر<EFBFBD><D8B1><EFBFBD><EFBFBD><EFBFBD>socket */
    if (sock >= 0)
    {
        closesocket(sock);
        sock = -1;
    }
    started = 0;
    is_running = 0;
}

static void usage(void)
{
    rt_kprintf("Usage: udpclient -h <host> -p <port> [--cnt] [count]\n");
    rt_kprintf("       udpclient --stop\n");
    rt_kprintf("       udpclient --help\n");
    rt_kprintf("\n");
    rt_kprintf("Miscellaneous:\n");
    rt_kprintf("  -h           Specify host address\n");
    rt_kprintf("  -p           Specify the host port number\n");
    rt_kprintf("  --cnt        Specify the send data count\n");
    rt_kprintf("  --stop       Stop tcpclient program\n");
    rt_kprintf("  --help       Print help information\n");
}

static void udpclient_test(int argc, char** argv)
{
    rt_thread_t tid;

    if (argc == 1 || argc > 7)
    {
        LOG_I("Please check the command you entered!\n");
        goto __usage;
    }
    else
    {
        if (rt_strcmp(argv[1], "--help") == 0)
        {
            goto __usage;
        }
        else if (rt_strcmp(argv[1], "--stop") == 0)
        {
            is_running = 0;
            return;
        }
        else if (rt_strcmp(argv[1], "-h") == 0 && rt_strcmp(argv[3], "-p") == 0)
        {
            if (started)
            {
                LOG_I("The tcpclient has started!");
                LOG_I("Please stop tcpclient firstly, by: tcpclient --stop");
                return;
            }

            if (argc == 7 && rt_strcmp(argv[6], "--cnt") == 0)
            {
                count = atoi(argv[7]);
            }

            if (rt_strlen(argv[2]) > sizeof(url))
            {
                LOG_E("The input url is too long, max %d bytes!", sizeof(url));
                return;
            }
            rt_memset(url, 0x0, sizeof(url));
            rt_strncpy(url, argv[2], rt_strlen(argv[2]));
            port = atoi(argv[4]);
        }
        else
        {
            goto __usage;
        }
    }

    tid = rt_thread_create("udp_client",
        udpclient, RT_NULL,
        2048, RT_THREAD_PRIORITY_MAX/3, 20);
    if (tid != RT_NULL)
    {
        rt_thread_startup(tid);
    }
    return;

__usage:
    usage();
}

#ifdef RT_USING_FINSH
MSH_CMD_EXPORT_ALIAS(udpclient_test, udpclient,
    Start a udp client. Help: udpclient --help);
#endif