TCPsocket丢包，请求大佬支援

a2129981 2019-05-22 08:29:50

小弟萌新，在WIN10上根据大佬的博客，用TCP做了一个简单的传输正弦波函数的程序，然后接收端只能接受大约2.5万个数据，之后就停止了，而且中间会有一部分丢包，大约一两百个数据，求大佬们指导一下，感谢感谢

这个是sever程序：

#include<iostream>
#include<WinSock2.h>
#include <Ws2tcpip.h>
#include<math.h>
#define M_PI 3.14159265358979323846
#define CONNECT_NUM_MAX 10

#pragma comment(lib, "ws2_32.lib")

using namespace std;

int main()
{
double x = 0;
double y;
//加载套接字库
WSADATA wsaData;
int iRet = 0;
iRet = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (iRet != 0)
{
cout << "WSAStartup(MAKEWORD(2, 2), &wsaData) execute failed!" << endl;;
return -1;
}
if (2 != LOBYTE(wsaData.wVersion) || 2 != HIBYTE(wsaData.wVersion))
{
WSACleanup();
cout << "WSADATA version is not correct!" << endl;
return -1;
}

//创建套接字
SOCKET serverSocket = socket(AF_INET, SOCK_STREAM, 0);
if (serverSocket == INVALID_SOCKET)
{
cout << "serverSocket = socket(AF_INET, SOCK_STREAM, 0) execute failed!" << endl;
return -1;
}

//初始化服务器地址族变量
SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY);
addrSrv.sin_family = AF_INET;
addrSrv.sin_port = htons(6000);

//绑定
iRet = bind(serverSocket, (SOCKADDR*)&addrSrv, sizeof(SOCKADDR));
if (iRet == SOCKET_ERROR)
{
cout << "bind(serverSocket, (SOCKADDR*)&addrSrv, sizeof(SOCKADDR)) execute failed!" << endl;
return -1;
}

//监听
iRet = listen(serverSocket, CONNECT_NUM_MAX);
if (iRet == SOCKET_ERROR)
{
cout << "listen(serverSocket, 10) execute failed!" << endl;
return -1;
}
else
{
cout << "Server is listening on " << addrSrv.sin_addr.S_un.S_addr << ":" << addrSrv.sin_port << "." << endl;
}

//等待连接_接收_发送
SOCKADDR_IN clientAddr;
int len = sizeof(SOCKADDR);
while (1)
{
SOCKET connSocket = accept(serverSocket, (SOCKADDR*)&clientAddr, &len);
if (connSocket == INVALID_SOCKET)
{
cout << "accept(serverSocket, (SOCKADDR*)&clientAddr, &len) execute failed!" << endl;
return -1;
}
else
{
cout << "Connection established! Waiting for messages." << endl;
}

int z = 0;
while (true)
{
//接收消息
char recvBuf[100];
int sig = recv(connSocket, recvBuf, 100, 0);
//没有连接时断开
if (sig <= 0)
{
printf("Error: Lost connection!\n");
break;
}
printf("%s\n", recvBuf);

//发送消息
char sendBuf[100];
//sprintf_s(sendBuf, "Welcome %s", inet_ntoa(clientAddr.sin_addr));
char str[INET_ADDRSTRLEN];
for (int k=1;k<2;k--)
{
y = sin(x);
x = x + M_PI/1000;
sprintf_s(sendBuf,"%f %d\n",y,z);
printf(sendBuf);
send(connSocket, sendBuf, strlen(sendBuf)+1,0);
z++;
}

break;
}

//关闭连接
closesocket(connSocket);
}

system("pause");
return 0;
}

这个是client程序：
#include<iostream>
#include <winsock2.h>
#include <Ws2tcpip.h>

using namespace std;

#pragma comment(lib, "ws2_32.lib")

int main()
{
//加载套接字库
WSADATA wsaData;
int iRet = 0;
iRet = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (iRet != 0)
{
cout << "WSAStartup(MAKEWORD(2, 2), &wsaData) execute failed!" << endl;
return -1;
}
if (2 != LOBYTE(wsaData.wVersion) || 2 != HIBYTE(wsaData.wVersion))
{
WSACleanup();
cout << "WSADATA version is not correct!" << endl;
return -1;
}

//创建套接字
SOCKET clientSocket = socket(AF_INET, SOCK_STREAM, 0);
if (clientSocket == INVALID_SOCKET)
{
cout << "clientSocket = socket(AF_INET, SOCK_STREAM, 0) execute failed!" << endl;
return -1;
}

//初始化服务器端地址族变量
SOCKADDR_IN srvAddr;
//srvAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
inet_pton(AF_INET, "127.0.0.1", &srvAddr.sin_addr);
srvAddr.sin_family = AF_INET;
srvAddr.sin_port = htons(6000);

//连接服务器
iRet = connect(clientSocket, (SOCKADDR*)&srvAddr, sizeof(SOCKADDR));
if (0 != iRet)
{
cout << "connect(clientSocket, (SOCKADDR*)&srvAddr, sizeof(SOCKADDR)) execute failed!" << endl;
return -1;
}

int x = 0;

while (true)
{

//发送消息
char sendBuf[100];
sprintf_s(sendBuf, "Hello, this is client bunny！");
send(clientSocket, sendBuf, strlen(sendBuf) + 1, 0);

//接收消息
char recvBuf[100];
int sig = recv(clientSocket, recvBuf, 100, 0);
//没有连接时断开
if (sig <= 0)
{
printf("Error: Lost connection!\n");
break;
}
printf("%s", recvBuf);

//跳出

}

//清理
closesocket(clientSocket);
WSACleanup();

system("pause");
return 0;
}

...全文