面向接口编程

#include<iostream>
#include<stdlib.h>
#include<stdio.h>
#include<string.h>
using namespace std;

////初始化
typedef void(*init_CSocketProtocol)(void** handle);
//发送接口
typedef void(*send_CSocketProtocol)(void* handle,  char* sendData, int sendLen);
//接收接口
typedef void(*recv_CSocketProtocol)(void* handle,  char* recvData, int* recvLen);
//关闭
typedef void(*close_CSocketProtocol)(void* handle);
struct Info {
	char data[1024];
	int len;
};
//初始化
void init_CSockImpl(void** handle) {
	struct Info* info = (struct Info*)malloc(sizeof(struct Info));
	memset(info, 0, sizeof(Info));
	*handle = info;
}
//发送接口
void send_CSockImpl(void* handle, char* sendData, int sendLen) {
	if (NULL == handle)return;
	if (NULL == sendData)return;
	struct Info* info = (struct Info*)handle;
	strncpy_s(info->data, sendData, sendLen);
	info->len = sendLen;
	cout << "发送数据：" << sendData << endl;
}
//接收接口
void recv_CSockImpl(void* handle, char* recvData, int* recvLen) {
	if (NULL == handle)return;
	if (NULL == recvData)return;
	if (NULL == recvLen)return;

	struct Info* info = (struct Info*)handle;
	char s[1024];
	strncpy_s(recvData,1024, info->data,sizeof(info->data));
	//strncpy_s(s, info->data, info->len);
	//recvData = s;
	*recvLen = info->len;

	cout << "接收数据：" << recvData << endl;
}
//关闭
void close_CSockImpl(void* handle) {
	if (NULL == handle)return;
	free(handle);
	handle = NULL;
}


//业务
void FramWork(init_CSocketProtocol init,
	send_CSocketProtocol send,
	recv_CSocketProtocol recv,
	close_CSocketProtocol close) {
	//初始化链接
	void *handle = nullptr;
	init(&handle);
	//发送数据
	char buf[1024] = "hello world";
	int len = strlen(buf);
	send(handle, buf, len);

	//接受数据
	char recvBuf[1024] = { 0 };
	int recvlen = 0;
	recv(handle, recvBuf, &recvlen);
	//关闭链接
	close(handle);
}

void test() {

	FramWork(init_CSockImpl, send_CSockImpl, recv_CSockImpl, close_CSockImpl);
}
int main() {
	test();
	system("pause");
}