/*************************************************************************
	> File Name : CUdpClient.cpp
	> Author : FengChao
	> EMail : smile.fengchao@gmail.com 
	> Created Time : Tue 21 Jul 2020 02:02:08 PM CST
 ************************************************************************/

#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include <pthread.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <fcntl.h>
#include "CUdpClient.h"
#include "CLog.h"

CUdpClient::CUdpClient()
{
    m_iClientSock = -1;
    m_uiPort = 0;
    memset(m_ucHost, 0x00, sizeof(m_ucHost));
    memset(&m_stServerInfo, 0x00, sizeof(m_stServerInfo));
    CUdpSocket();
}
    
CUdpClient::CUdpClient(const char *pcHost, unsigned int uiPort)
{
    m_iClientSock = -1;
    m_uiPort = uiPort;
    memset(m_ucHost, 0x00, sizeof(m_ucHost));
    strcpy((char*)m_ucHost, pcHost);
    memset(&m_stServerInfo, 0x00, sizeof(m_stServerInfo));
    CUdpSocket();
}

CUdpClient::~CUdpClient()
{
    if(0 < m_iClientSock) close(m_iClientSock);
}

int CUdpClient::CUdpGetSockaddr(const char * pcHost, unsigned int uiPort, SOCKADDR_IN_T *pstSockaddr)
{
    SOCKADDR_IN_T stSockaddr;
    
    if((NULL == pcHost) || (0 == uiPort) || (NULL == pstSockaddr))
    {
        SysLog(SLOG_ERR, "Para is error!");
        return -1;
    }

    memset(&stSockaddr, 0x00, sizeof(stSockaddr));
    stSockaddr.sin_family = AF_INET;
    stSockaddr.sin_port = htons(uiPort);
    stSockaddr.sin_addr.s_addr = inet_addr(pcHost);
    if(stSockaddr.sin_addr.s_addr == INADDR_NONE)
    {
        SysLog(SLOG_ERR, "Incorrect ip address!");
        return -1;
    }

    memcpy(pstSockaddr, &stSockaddr, sizeof(SOCKADDR_IN_T));

    return 0;
}


int CUdpClient::CUdpSocket()
{
    m_iClientSock = socket(AF_INET, SOCK_DGRAM, 0);
    if(0 > m_iClientSock)
    {
        SysLog(SLOG_ERR, "Udp client socket failed!");
        return 0;
    }

    CUdpSetRecvTimeout(3);
    CUdpSetSendTimeout(0);

    return 0;
}

int CUdpClient::CUdpSetSendTimeout(unsigned int uiSeconds)
{
    TIMEVAL_T stTimeout;
    
    stTimeout.tv_sec = uiSeconds;
    stTimeout.tv_usec = 0;
    
    return setsockopt(m_iClientSock, SOL_SOCKET, SO_SNDTIMEO, &stTimeout, sizeof(stTimeout));
}

int CUdpClient::CUdpSetRecvTimeout(unsigned int uiSeconds)
{
    TIMEVAL_T stTimeout;
    
    stTimeout.tv_sec = uiSeconds;
    stTimeout.tv_usec = 0;
    
    return setsockopt(m_iClientSock, SOL_SOCKET, SO_RCVTIMEO, &stTimeout, sizeof(stTimeout));
}

int CUdpClient::CUdpSetBroadcastOpt()
{
    int iOptval = 1;
    return setsockopt(m_iClientSock, SOL_SOCKET, SO_BROADCAST | SO_REUSEADDR, &iOptval, sizeof(int));
}

int CUdpClient::CUdpRecvData(void *pcBuff, unsigned int uiBuffLen)
{
    return  CUdpRecvData(pcBuff, uiBuffLen, (const char *)m_ucHost, m_uiPort);
}

int CUdpClient::CUdpRecvData(void *pcBuff, unsigned int uiBuffLen, const char *pcHost, unsigned int uiPort)
{
    SOCKLEN_T stSockLen = 0;
    SOCKADDR_IN_T stSockaddr;
    
    if((NULL == pcBuff) || (NULL == pcHost) || (0 == uiPort))
    {
        SysLog(SLOG_ERR, "Para is error!");
        return -1;
    }

    memset(&stSockaddr, 0x00, sizeof(stSockaddr));
    if(0 != CUdpGetSockaddr(pcHost, uiPort, &stSockaddr))
    {
        SysLog(SLOG_ERR, "Get sockaddr failed!");
        return -1;
    }

    stSockLen = sizeof(SOCKADDR_IN_T);
    return recvfrom(m_iClientSock, pcBuff, uiBuffLen, 0, (SOCKADDR_T *)&stSockaddr, (SOCKLEN_T *)&stSockLen);
}

int CUdpClient::CUdpSendData(const void *pcData, unsigned int uiDataLen) 
{ 
    return CUdpSendData(pcData, uiDataLen, (const char*)m_ucHost, m_uiPort); 
}

int CUdpClient::CUdpSendData(const void *pcData, unsigned int uiDataLen, const char *pcHost, unsigned int uiPort)
{
    SOCKADDR_IN_T stSockaddr;
    
    if((NULL == pcData) || (NULL == pcHost) || (0 == uiPort))
    {
        SysLog(SLOG_ERR, "Para is error!");
        return -1;
    }

    memset(&stSockaddr, 0x00, sizeof(stSockaddr));
    if(0 != CUdpGetSockaddr(pcHost, uiPort, &stSockaddr))
    {
        SysLog(SLOG_ERR, "Get sockaddr failed!");
        return -1;
    }

    return sendto(m_iClientSock, pcData, uiDataLen, 0, (SOCKADDR_T *)&stSockaddr, (SOCKLEN_T)sizeof(stSockaddr));
}