UDP Client—Linux

#include <stdio.h>
#include <netinet/ip.h>

int main(int argc,char *argv[])
{
#define PERCENT        100
#define THOUSAND    1000
    int a = 0;
    int iSock = 0, tmpSock = 0;
    int opt = 0;
    int iRet = 0;
    int iRes = 0;
    int iFileDesc = 0;
    int iFileRet = 0;
    unsigned short usPeerPort = 11000;
    char *pPeerIP = "192.168.1.100";
    unsigned char pRecvBuff[20480];
    unsigned char pSendBuff[20480] = "I'm Zynq ^_^";
    time_t now;
    struct tm *p;
    unsigned int uiCnt = 0;
    unsigned int uiPeriod = 0;
    unsigned int uiSpeed = 0;
    unsigned int uiTmp = 0;
    char filePre[20] = {0};
    char fileName[100] = {0};
    char cmd[100] = {0};
    struct sockaddr_in addrLocal, addrPeer;
    static unsigned int s_uiLen = 0;

    memset(pRecvBuff, 0x00, 1024);

    iSock = socket(AF_INET, SOCK_DGRAM, 0);
    if (iSock < 0)
    {
        printf("Create socket error![%d]\n", iSock);
        return 0;
    }

    //iRes = 1;
    //ioctlsocket(iSock, FIONBIO, (u_long FAR*)&iRes);

    /* 设置本地的IP地址 */
    addrLocal.sin_family = AF_INET;
    addrLocal.sin_port = htons(1698);
    addrLocal.sin_addr.s_addr = htonl(INADDR_ANY);
    //addrLocal.sin_addr.S_un.S_addr = inet_addr("10.10.22.100");

    /* 设置远端的IP地址 --by cqs */
    addrPeer.sin_family = AF_INET;
    addrPeer.sin_port = htons(usPeerPort);
    addrPeer.sin_addr.s_addr = inet_addr(pPeerIP);

    iRet = bind(iSock, (struct sockaddr *)&addrLocal, sizeof(struct sockaddr));
    if (iRet < 0)
    {
        printf("bind error\n");
        return 0;
    }

    
    iRet = sendto(iSock, (char *)pSendBuff, 50, 0, (struct sockaddr*)&addrPeer, sizeof(struct sockaddr));
    if (iRet > 0)
    {
        printf("Udp send: %s\n", pSendBuff);
    }
    else
    {
        printf("Udp send error![%d]\n", iRet);
    }

    return 0;
}