对recv进行封装，接受完整数据文件

int MySocketRecv0(int sock, char* buf, int dateSize)
{
	//循环接收
	int numsRecvSoFar = 0;
	int numsRemainingToRecv = dateSize;
	printf("enter MySocketRecv0\n");
	while (1)
	{
		int bytesRead = recv(sock, &buf[numsRecvSoFar], numsRemainingToRecv, 0);
		printf("###bytesRead = %d,numsRecvSoFar = %d, numsRemainingToRecv = %d\n",
			bytesRead, numsRecvSoFar, numsRemainingToRecv);
		if (bytesRead == numsRemainingToRecv)
		{
			return 0;
		}
		else if (bytesRead > 0)
		{
			numsRecvSoFar += bytesRead;
			numsRemainingToRecv -= bytesRead;
			continue;
		}
		else if ((bytesRead < 0) && (errno == EAGAIN))
		{
			continue;
		}
		else
		{
			return -1;
		}
	}
}

对send进行封装，发送完整数据文件

int MySocketSend0(int socketNum, unsigned char* data, unsigned dataSize)
{
	unsigned numBytesSentSoFar = 0;
	unsigned numBytesRemainingToSend = dataSize;

	while(1)
	{
		int bytesSend = send(socketNum, (char const*)(&data[numBytesSentSoFar]), numBytesRemainingToSend, 0/*flags*/);
		if(bytesSend == numBytesRemainingToSend)
		{
			return 0;
		}
		else if(bytesSend > 0)
		{
			numBytesSentSoFar += bytesSend;
			numBytesRemainingToSend -= bytesSend;
			continue;
		}
		else if((bytesSend < 0)&&(errno == 11))
		{
			continue;
		}
		else
		{
			return -1;
		}
	}
}