socket client

SocketClient[2hbr]

#define _CRT_SECURE_NO_WARNINGS
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "itcastlog.h"

typedef struct _SCK_HANDLE
{
char version[64];
char ip[128];
int port;
unsigned char *p;
int plen;
}SCK_HANDLE; //动态库 内部的数据类型 ，不想让测试程序（上层应用知道）
//数据类型的封装

__declspec(dllexport)
int cltSocketInit(void **handle /*out*/)
{
int ret = 0;
SCK_HANDLE *hdl = NULL;
ITCAST_LOG(__FILE__, __LINE__, LogLevel[2], ret, "func cltSocketInit() Begin 22222:%d", ret);

hdl = (SCK_HANDLE *)malloc(sizeof(SCK_HANDLE));
if (hdl == NULL)
{
ret = -1;
ITCAST_LOG(__FILE__, __LINE__, LogLevel[4], ret, "func cltSocketInit() err:%d", ret);
return ret;
}
memset(hdl, 0, sizeof(SCK_HANDLE)); //把指针所指向的内存空间 赋值成 0；

strcpy(hdl->ip, "192.168.6.254");
hdl->port = 8081;
*handle = hdl;

ITCAST_LOG(__FILE__, __LINE__, LogLevel[2], ret, "func cltSocketInit() End:%d \n", ret);

return ret;
}

//客户端发报文
__declspec(dllexport)
int cltSocketSend(void *handle /*in*/, unsigned char *buf /*in*/, int buflen /*in*/)
{
int ret = 0;
SCK_HANDLE *hdl = NULL;

if (handle==NULL || buf==NULL )
{
ret = -1;
ITCAST_LOG(__FILE__, __LINE__, LogLevel[4], ret, "func cltSocketSend() err:%d\n (handle==NULL || buf==NULL ) ", ret);
return ret;
}

hdl = (SCK_HANDLE *)handle;

hdl->p = (unsigned char *)malloc(buflen *sizeof(unsigned char));
if (hdl->p == NULL)
{
ret = -2;
ITCAST_LOG(__FILE__, __LINE__, LogLevel[4], ret, "func cltSocketSend() err: buflen:%d ", buflen);
ITCAST_LOG(__FILE__, __LINE__, LogLevel[4], ret, "func cltSocketSend() err:%d\n (unsigned char *)malloc(buflen *sizeof(unsigned char) ", ret);
return ret;
}
memcpy(hdl->p, buf, buflen);
hdl->plen = buflen;

return 0;
}

//客户端收报文
__declspec(dllexport)
int cltSocketRev(void *handle /*in*/, unsigned char *buf /*in*/, int *buflen /*in out*/)
{
int ret = 0;
SCK_HANDLE *hdl = NULL;

if (handle==NULL || buf==NULL ||buflen==NULL)
{
ret = -1;
ITCAST_LOG(__FILE__, __LINE__, LogLevel[4], ret, "func cltSocketRev() err:%d\n (handle==NULL || buf==NULL ) ", ret);
return ret;
}
hdl = (SCK_HANDLE *)handle;

memcpy(buf, hdl->p, hdl->plen);
*buflen = hdl->plen;

return ret;
}

//客户端释放资源
__declspec(dllexport)
int cltSocketDestory(void *handle/*in*/)
{
int ret = 0;
SCK_HANDLE *hdl = NULL;

if (handle==NULL )
{
ret = -1;
ITCAST_LOG(__FILE__, __LINE__, LogLevel[4], ret, "func cltSocketDestory() err:%d\n (handle==NULL || buf==NULL ) ", ret);
return ret;
}
hdl = (SCK_HANDLE *)handle;

if (hdl->p)
{
free(hdl->p);
}
free(hdl);

return ret;
}

//-----------------------第二套api函数--------------------------------*/
__declspec(dllexport)
int cltSocketInit2(void **handle)
{
return cltSocketInit(handle);
}

//客户端发报文
__declspec(dllexport)
int cltSocketSend2(void *handle, unsigned char *buf, int buflen)
{
return cltSocketSend(handle, buf, buflen);
}

//客户端收报文
__declspec(dllexport)
int cltSocketRev2(void *handle, unsigned char **buf, int *buflen)
{
int ret = 0;
SCK_HANDLE *hdl = NULL;
unsigned char *tmp = NULL;

if (handle==NULL || buf==NULL ||buflen==NULL)
{
ret = -1;
ITCAST_LOG(__FILE__, __LINE__, LogLevel[4], ret, "func cltSocketRev2() err:%d\n (handle==NULL || buf==NULL ) ", ret);
return ret;
}
hdl = (SCK_HANDLE *)handle;

tmp = (unsigned char *)malloc(hdl->plen);
if (tmp == NULL)
{
ret = -2;
ITCAST_LOG(__FILE__, __LINE__, LogLevel[4], ret, "func cltSocketRev2() err:%d\n (malloc err ) ", ret);
return ret;
}

memcpy(tmp, hdl->p, hdl->plen);
*buflen = hdl->plen;

*buf = tmp; //间接赋值
return ret;
}

__declspec(dllexport)
int cltSocketRev2_Free(unsigned char **buf)
{
if (buf == NULL)
{
return -1;
}
if (*buf != NULL)
{
free(*buf);
}
*buf = NULL; //*实参的地址 去间接的修改实参的值 重新初始化NULL
return 0;
}

//客户端释放资源
__declspec(dllexport)
int cltSocketDestory2(void **handle)
{
SCK_HANDLE *tmp = NULL;
if (handle==NULL)
{
return -1;
}
tmp = *handle;
if (tmp != NULL)
{
if (tmp->p)
{
free(tmp->p);
tmp->p = NULL;
}
free(tmp);
}
*handle = NULL; //*实参的地址 去间接的修改实参的值 重新初始化NULL

return 0;
}