162 lines
4.1 KiB
C
162 lines
4.1 KiB
C
#include <rtthread.h>
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#include <sys/socket.h> /* 使用BSD socket，需要包含sockets.h头文件 */
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#include "netdb.h"
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#define DEBUG_UDP_CLIENT
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#define DBG_TAG "UDP"
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#ifdef DEBUG_UDP_CLIENT
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#define DBG_LVL DBG_LOG
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#else
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#define DBG_LVL DBG_INFO /* DBG_ERROR */
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#endif
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#include <rtdbg.h>
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static int started = 0;
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static int is_running = 0;
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static char url[256];
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static int port = 8080;
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static int count = 10;
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const char send_data[] = "This is UDP Client from RT-Thread.\n"; /* 发送用到的数据 */
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static void udpclient(void *arg)
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{
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int sock;
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struct hostent *host;
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struct sockaddr_in server_addr;
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/* 通过函数入口参数url获得host地址（如果是域名，会做域名解析） */
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host = (struct hostent *) gethostbyname(url);
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if (host == RT_NULL)
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{
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LOG_E("Get host by name failed!");
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return;
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}
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/* 创建一个socket，类型是SOCK_DGRAM，UDP类型 */
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if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
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{
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LOG_E("Create socket error");
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return;
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}
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/* 初始化预连接的服务端地址 */
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server_addr.sin_family = AF_INET;
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server_addr.sin_port = htons(port);
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server_addr.sin_addr = *((struct in_addr *)host->h_addr);
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rt_memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero));
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started = 1;
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is_running = 1;
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/* 总计发送count次数据 */
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while (count && is_running)
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{
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/* 发送数据到服务远端 */
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sendto(sock, send_data, rt_strlen(send_data), 0,
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(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
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/* 线程休眠一段时间 */
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rt_thread_mdelay(1000);
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/* 计数值减一 */
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count --;
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}
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if (count == 0)
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{
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LOG_I("UDP client send data finished!");
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}
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/* 关闭这个socket */
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if (sock >= 0)
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{
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closesocket(sock);
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sock = -1;
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}
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started = 0;
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is_running = 0;
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}
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static void usage(void)
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{
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rt_kprintf("Usage: udpclient -h <host> -p <port> [--cnt] [count]\n");
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rt_kprintf(" udpclient --stop\n");
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rt_kprintf(" udpclient --help\n");
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rt_kprintf("\n");
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rt_kprintf("Miscellaneous:\n");
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rt_kprintf(" -h Specify host address\n");
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rt_kprintf(" -p Specify the host port number\n");
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rt_kprintf(" --cnt Specify the send data count\n");
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rt_kprintf(" --stop Stop udpclient program\n");
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rt_kprintf(" --help Print help information\n");
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}
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static void udpclient_test(int argc, char** argv)
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{
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rt_thread_t tid;
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if (argc == 1 || argc > 7)
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{
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LOG_I("Please check the command you entered!\n");
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goto __usage;
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}
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else
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{
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if (rt_strcmp(argv[1], "--help") == 0)
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{
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goto __usage;
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}
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else if (rt_strcmp(argv[1], "--stop") == 0)
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{
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is_running = 0;
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return;
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}
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else if (rt_strcmp(argv[1], "-h") == 0 && rt_strcmp(argv[3], "-p") == 0)
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{
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if (started)
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{
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LOG_I("The udpclient has started!");
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LOG_I("Please stop udpclient firstly, by: udpclient --stop");
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return;
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}
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if (argc == 7 && rt_strcmp(argv[6], "--cnt") == 0)
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{
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count = atoi(argv[7]);
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}
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if (rt_strlen(argv[2]) > sizeof(url))
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{
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LOG_E("The input url is too long, max %d bytes!", sizeof(url));
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return;
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}
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rt_memset(url, 0x0, sizeof(url));
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rt_strncpy(url, argv[2], rt_strlen(argv[2]));
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port = atoi(argv[4]);
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}
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else
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{
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goto __usage;
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}
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}
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tid = rt_thread_create("udp_client",
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udpclient, RT_NULL,
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2048, RT_THREAD_PRIORITY_MAX/3, 20);
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if (tid != RT_NULL)
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{
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rt_thread_startup(tid);
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}
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return;
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__usage:
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usage();
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}
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#ifdef RT_USING_FINSH
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MSH_CMD_EXPORT_ALIAS(udpclient_test, udpclient,
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Start a udp client. Help: udpclient --help);
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#endif
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