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

#include <rtthread.h>
#include <string.h>

#if !defined(SAL_USING_POSIX)
#error "Please enable SAL_USING_POSIX!"
#else
#include <sys/time.h>
#include <sys/select.h>
#endif
#include <sys/socket.h> /* ʹ<><CAB9>BSD socket<65><74><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>socket.hͷ<68>ļ<EFBFBD> */
#include "netdb.h"

#define DEBUG_TCP_CLIENT

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

#define BUFSZ   1024

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

static void tcpclient(void *arg)
{
    int ret;
    char *recv_data;
    int bytes_received;
    int sock = -1;
    struct hostent *host = RT_NULL;
    struct sockaddr_in server_addr;

    struct timeval timeout;
    fd_set readset;

    /* ͨ<><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 = gethostbyname(url);
    if (host == RT_NULL)
    {
        LOG_E("Get host by name failed!");
        return;
    }

    /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4>Ž<EFBFBD><C5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵĻ<DDB5><C4BB><EFBFBD> */
    recv_data = rt_malloc(BUFSZ);
    if (recv_data == RT_NULL)
    {
        LOG_E("No memory");
        return;
    }

    /* <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>socket<65><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>SOCKET_STREAM<41><4D>TCP<43><50><EFBFBD><EFBFBD> */
    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
    {
        /* <20><><EFBFBD><EFBFBD>socketʧ<74><CAA7> */
        LOG_E("Create socket error");
        goto __exit;
    }

    /* <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));

    /* <20><><EFBFBD>ӵ<EFBFBD><D3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
    if (connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1)
    {
        /* <20><><EFBFBD><EFBFBD>ʧ<EFBFBD><CAA7> */
        LOG_E("Connect fail!");
        goto __exit;
    }

    started = 1;
    is_running = 1;

    timeout.tv_sec = 3;
    timeout.tv_usec = 0;

    while (is_running)
    {
        FD_ZERO(&readset);
        FD_SET(sock, &readset);

        /* Wait for read */
        if (select(sock + 1, &readset, RT_NULL, RT_NULL, &timeout) == 0)
            continue;

        /* <20><>sock<63><6B><EFBFBD><EFBFBD><EFBFBD>н<EFBFBD><D0BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>BUFSZ - 1<>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD><EFBFBD> */
        bytes_received = recv(sock, recv_data, BUFSZ - 1, 0);
        if (bytes_received < 0)
        {
            /* <20><><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><DCA3>ر<EFBFBD><D8B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
            LOG_E("Received error, close the socket.");
            goto __exit;
        }
        else if (bytes_received == 0)
        {
            /* <20><>ӡrecv<63><76><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵΪ0<CEAA>ľ<EFBFBD><C4BE><EFBFBD><EFBFBD><EFBFBD>Ϣ */
            LOG_W("Received warning, recv function return 0.");
            continue;
        }
        else
        {
            /* <20>н<EFBFBD><D0BD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD>ĩ<EFBFBD><C4A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
            recv_data[bytes_received] = '\0';

            if (rt_strcmp(recv_data, "q") == 0 || rt_strcmp(recv_data, "Q") == 0)
            {
                /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĸ<EFBFBD><C4B8>q<EFBFBD><71>Q<EFBFBD><51><EFBFBD>ر<EFBFBD><D8B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
                LOG_I("Got a 'q' or 'Q', close the socket.");
                goto __exit;
            }
            else
            {
                /* <20>ڿ<EFBFBD><DABF><EFBFBD><EFBFBD>ն<EFBFBD><D5B6><EFBFBD>ʾ<EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
                LOG_D("Received data = %s", recv_data);
            }
        }

        /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>sock<63><6B><EFBFBD><EFBFBD> */
        ret = send(sock, send_data, rt_strlen(send_data), 0);
        if (ret < 0)
        {
            /* <20><><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><DCA3>ر<EFBFBD><D8B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
            LOG_I("send error, close the socket.");
            goto __exit;
        }
        else if (ret == 0)
        {
            /* <20><>ӡsend<6E><64><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵΪ0<CEAA>ľ<EFBFBD><C4BE><EFBFBD><EFBFBD><EFBFBD>Ϣ */
            LOG_W("Send warning, send function return 0.");
        }
    }

__exit:
    if (recv_data)
    {
        rt_free(recv_data);
        recv_data = RT_NULL;
    }
    if (sock >= 0)
    {
        closesocket(sock);
        sock = -1;
    }
    started = 0;
    is_running = 0;
    return;
}

static void usage(void)
{
    rt_kprintf("Usage: tcpclient -h <host> -p <port>\n");
    rt_kprintf("       tcpclient --stop\n");
    rt_kprintf("       tcpclient --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("  --stop       Stop tcpclient program\n");
    rt_kprintf("  --help       Print help information\n");
}

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

    if (argc == 1 || argc > 5)
    {
        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 (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("tcp_client",
        tcpclient, 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(tcpclient_test, tcpclient,
    Start a tcp client. Help: tcpclient --help);
#endif