socket區域網傳輸檔案

server用於接收來自client傳送的檔案。server和client位於同乙個區域網內就可以進行通訊。

檔案讀寫必須用二進位制方式。

#include 

#include 
#include 
#include 
#include 
#include 
using
namespace
std;
using
std::ofstream;
using
std::string;
using
std::thread;
#pragma comment(lib, "ws2_32.lib")
const
int bufsize = 1024; //緩衝大小 1024位元組
int myrecv(socket sockconn) // 收到客戶端訊息後儲存檔案
;    // filename
int ret = recv(sockconn, buffer, bufsize, 0);
if (ret == -1) 
#define _cpp
#ifdef _cpp
string filename(buffer);
cout
<< ", \""
<< filename << "\"";
// recvive file size
recv(sockconn, buffer, bufsize, 0); 
double count = atof(buffer); 
cout
<< ", size = "
<< count/1024
<< "kb ";
// recvive file content
ofstream of(filename, ofstream::binary);
memset(buffer, 0, bufsize);
int sum = 0;
while ((ret = recv(sockconn, buffer, bufsize, 0)) > 0)  // 反覆接收二進位制資料塊
of.close();
#else
file * fd = fopen(buffer, "wb");
memset(buffer, 0, bufsize);
while ((ret = recv(sockconn, buffer, bufsize, 0)) > 0) 
fclose(fd);
#endif
cout
<< " received done!"
<< endl;
return0;}
int main(int argc, char * argv) 
wsadata wsadata;
int err;
err = wsastartup(makeword(2, 2), &wsadata);
if (err != 0) 
if (lobyte(wsadata.wversion) != 2 || hibyte(wsadata.wversion) != 2) 
socket socksrv = socket(af_inet, sock_stream, 0);
if (socksrv == invalid_socket)
cerr
<< "error: socket unsuccessful"
<< endl;
sockaddr_in addrsrv;
addrsrv.sin_addr.s_un.s_addr = htonl(inaddr_any);
addrsrv.sin_family = af_inet;
addrsrv.sin_port = htons(port);
///!!!!!!! 操蛋， 這裡加::全域性空間。。。否則客戶端死活連線不上。。。
err = ::bind(socksrv, (sockaddr *)&addrsrv, sizeof(addrsrv));  
if (err != 0) 
err = listen(socksrv, 5); // 監聽
if (err != 0) 
//std::cout << "socket ptr: " << socksrv << endl;
sockaddr_in addrclient;
int len = sizeof(sockaddr);
cout
<< "wait for conneting..."
<< endl;
while (true) 
return
0;}

#include 

#include 
#include 
//#include 
#include 
#include 
using
namespace
std;
#pragma comment(lib, "ws2_32.lib")
const
int bufsize = 1024; //緩衝大小 1024位元組
int myclient(int port, char * filename1, char * ip) 
cout
<< "file name: "
<< tmp << endl;
char filename_buf[255] = ;   // 檔名 用於傳送
strcpy(filename_buf, tmp.c_str());
wsadata wsadata;
int err;
err = wsastartup(makeword(2, 2), &wsadata);
if (err != 0)
return -1;
if (lobyte(wsadata.wversion) != 2 || hibyte(wsadata.wversion) != 2) 
socket sockclient = socket(af_inet, sock_stream, 0);
if (sockclient == invalid_socket)   
sockaddr_in addrsrv;
addrsrv.sin_addr.s_un.s_addr = inet_addr(ip);
addrsrv.sin_family = af_inet;
addrsrv.sin_port = htons(port);
//std::cout << "socket ptr: " << sockclient << endl;
int ret = connect(sockclient, (sockaddr*)&addrsrv, sizeof(addrsrv)); // 建立連線
if(ret != 0 )
// send filename
ret = send(sockclient, filename_buf, strlen(filename_buf) + 1, 0);
if (ret == -1) 
// send content
#define _cpp
#ifdef _cpp
string filename(filename1);
ifstream fd(filename, ifstream::binary);
fd.seekg(0, ifstream::end);
// file size
sleep(100);
char buf[bufsize] = ;
double filesize = fd.tellg();
sprintf(buf, "%lf", filesize);
send(sockclient, buf, strlen(buf), 0);  // send file size
fd.seekg(0);
memset(buf, 0, bufsize);
sleep(500);
while (fd.good()) 
memset(buf, 0, bufsize);
}fd.close();
#else
file * fd = fopen(filename_buf, "rb");
sleep(500);
char buf[bufsize] = ;
while (true) 
memset(buf, 0, bufsize);
}fclose(fd);
#endif
cout
<< "send "
<< filename1 << " done."
<< endl;
return0;}
int main(int argc, char * argv)
//argv[1] = r"(c:\users\wanggao\desktop\新建文字文件.txt)";
//argv[2] = "192.168.3.113";
int port = 6000;    // 與server相同
char * filename;    // 檔案
char * server_ip;   // server位址
filename = argv[1];
server_ip = argv[2];
return myclient(port, filename, server_ip);
}

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