发送端（客户端）
1 #include <iostream> 2 #include <winsock2.h> 3 #include <Ws2tcpip.h> 4 #include <fstream> 5 using namespace std; 6 7 #pragma comment(lib, "ws2_32.lib") 8 9 struct FileHeader 10 { 11 12 char m_szFileName[MAX_PATH];//windows下，全文件名的字符长度是有限制的，众所周知，是MAX_PATH，260 13 int m_nFileSize; 14 15 }; 16 17 int main() 18 { 19 WORD wVersionRequested; 20 WSADATA wsaData; 21 int err; 22 23 24 wVersionRequested = MAKEWORD(2, 2); 25 26 err = WSAStartup(wVersionRequested, &wsaData); 27 if (err != 0) { 28 29 printf("WSAStartup failed with error: %d ", err); 30 return 1; 31 } 32 33 34 if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) { 35 36 printf("Could not find a usable version of Winsock.dll "); 37 WSACleanup(); 38 return 1; 39 } 40 else 41 printf("The Winsock 2.2 dll was found okay "); 42 43 SOCKET sockClient = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); 44 if(INVALID_SOCKET == sockClient) 45 { 46 WSACleanup(); 47 return 1; 48 } 49 cout<<"请输入服务器iP"<<endl; 50 char szip[100] = {0}; 51 cin>>szip; 52 sockaddr_in addr; 53 54 55 addr.sin_addr.S_un.S_addr=inet_addr("192.168.202.1"); 56 57 addr.sin_family = AF_INET; 58 //addr.sin_addr.S_un.S_addr = inet_addr("192.168.1.251"); 59 addr.sin_port = htons(1234); 60 61 if(SOCKET_ERROR == connect(sockClient,(const sockaddr*)&addr,sizeof(addr))) 62 { 63 WSACleanup(); 64 closesocket(sockClient); 65 return 1; 66 } 67 68 char szFilePath[MAX_PATH] = {0}; 69 char *ptemp = szFilePath; 70 char szResult[4] = {0};//是，否 71 char szContent[1024] = {0};//文件内容 72 //文件头 73 //文件名，文件大小 74 FileHeader fh; 75 cout<<"请输入要传输的文件"<<endl; 76 cin>>szFilePath; 77 78 //获得文件名 79 while(*ptemp++ != ' '); 80 while(*(--ptemp) != '\');//\是一个字符 81 ptemp++; 82 83 strcpy_s(fh.m_szFileName,MAX_PATH,ptemp); 84 85 fstream fs; 86 fs.open(szFilePath,fstream::in|fstream::binary);//以二进制流的方式读入，中间是'|' 87 88 89 fs.seekg(0,fstream::end);//使文件指针偏移到末尾，用法详细可以见： 90 fh.m_nFileSize = fs.tellg(); //获得文件指针所在位置的文件大小 91 fs.seekg(0,fstream::beg);//将文件指针偏移位置置回0 92 //发送，先发送文件的基本信息 93 send(sockClient,(const char*)&fh,sizeof(fh),0); 94 95 //等待对方回复 96 recv(sockClient,szResult,sizeof(szResult),0); 97 98 if(0 == strcmp(szResult,"是")) 99 { 100 //如果是肯定回复 101 102 while(1) 103 { 104 //读文件 105 fs.read(szContent,sizeof(szContent)); 106 int nRelReadNum = fs.gcount(); 107 if(nRelReadNum == 0) 108 { 109 break; 110 } 111 //发文件 112 send(sockClient,szContent,nRelReadNum,0); 113 } 114 115 } 116 //关闭文件 117 fs.close(); 118 closesocket(sockClient); 119 WSACleanup(); 120 system("pause"); 121 return 0; 122 }
接收端（服务器）
1 #include<stdio.h> 2 #include<iostream> 3 #include<fstream> 4 #include<winsock2.h> 5 #pragma comment(lib,"ws2_32.lib") 6 using namespace std; 7 struct fileFifo 8 { 9 char fileName[MAX_PATH]; 10 int fileSize; 11 }; 12 int main() 13 { 14 //初始化wsa 15 WORD wVersionRequested; 16 WSADATA wsaData; 17 int err; 18 wVersionRequested = MAKEWORD(2, 2); 19 20 err = WSAStartup(wVersionRequested, &wsaData); 21 if (err != 0) 22 { 23 24 printf("WSAStartup failed with error: %d ", err); 25 return 1; 26 } 27 28 if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) 29 { 30 31 printf("Could not find a usable version of Winsock.dll "); 32 WSACleanup(); 33 return 1; 34 } 35 else 36 printf("The Winsock 2.2 dll was found okay "); 37 38 SOCKET sever; 39 SOCKET waiter; 40 struct sockaddr_in severaddr; 41 struct sockaddr_in clientaddr; 42 char recvbuf[1024];//接受缓冲区 43 char sendbuf[1024];//发送缓冲区 44 //创建套接字 45 sever=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); 46 if(sever==INVALID_SOCKET) 47 { 48 WSACleanup(); 49 return 1; 50 } 51 /*if(sever=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP)==INVALID_SOCKET) 52 { 53 WSACleanup(); 54 return 1; 55 }*/ 56 //绑定 57 severaddr.sin_family=AF_INET; 58 severaddr.sin_port=htons(1234); 59 severaddr.sin_addr.S_un.S_addr=inet_addr("192.168.202.1"); 60 61 if(bind(sever,(const sockaddr*)&severaddr,sizeof(severaddr))==SOCKET_ERROR) 62 { 63 WSACleanup(); 64 closesocket(sever); 65 return 1; 66 } 67 if(listen(sever,4)==SOCKET_ERROR) 68 { 69 WSACleanup(); 70 return 1; 71 } 72 printf("等待连接... "); 73 int clientlen=sizeof(clientaddr); 74 waiter=accept(sever,(SOCKADDR*)&clientaddr,&clientlen); 75 if(waiter==INVALID_SOCKET)//第一个参数为监听套接字 76 { 77 printf("接受失败 "); 78 WSACleanup(); 79 closesocket(sever); 80 return 1; 81 } 82 char filePath[MAX_PATH]; 83 char result[4]={0}; 84 char context[1024]; 85 fileFifo file; 86 fstream fs; 87 recv(waiter,(char *)&file,sizeof(file),0);//发送的和接受的数据类型要一致 88 89 cout<<"文件大小为："<<file.fileSize<<endl; 90 cout<<"请输入是否接受该文件"<<endl; 91 cin>>result; 92 int tempsize=file.fileSize; 93 94 send(waiter,result,sizeof(result),0); 95 96 if(strcmp(result,"是")==0) 97 { 98 cout<<"您要存储得路径为："<<endl; 99 cin>>filePath; 100 strcat_s(filePath,MAX_PATH,file.fileName); 101 //对应路径下创建文件用于接受 102 fs.open(filePath,fstream::binary|fstream::out|fstream::trunc); 103 while(tempsize) 104 { 105 //接收文件内容 106 int numRecv=recv(waiter,context,sizeof(context),0); 107 //写文件 108 if(numRecv>0) 109 { 110 tempsize-=numRecv; 111 fs.write(context,numRecv); 112 } 113 } 114 } 115 fs.close(); 116 WSACleanup(); 117 closesocket(sever); 118 closesocket(waiter); 119 system("pause"); 120 return 0; 121 }