کد:
#include <iostream>
#include <winsock2.h>
#include <string>
using namespace std;
//link libwsock32.a
unsigned long WinsockStart()
{
WSADATA wsa;
unsigned long ulong;
struct hostent *host;
if(WSAStartup(MAKEWORD(2,2), &wsa) < 0)
{
cout << "Error WinsockStart()" << endl;
WSACleanup();
return 1;
}
if((host=gethostbyname("www.example.com"))<0)
{
cout << "Fehler gethostbyname()" << endl;
WSACleanup();
return 2;
}
ulong = *(unsigned long*) host->h_addr;
return ulong;
}
void error_exit(string text)
{
cout << text;
WSACleanup();
exit(EXIT_FAILURE);
}
int main()
{
SOCKET sock;
struct sockaddr_in addr;
unsigned long win=0;
int con = 0, gr=0, send_r=0, rec=0;
char header[2048], puffer[2018];
string to_send="hello world";
string name="test99.txt";
win=WinsockStart();
if(win==1||win==2)
error_exit("Error WinsockStart()");
addr.sin_family=AF_INET;
addr.sin_port=htons(80);
addr.sin_addr.s_addr = win;
sock = socket(AF_INET, SOCK_STREAM, 0);
if(sock<0)
error_exit("Error socket()");
gr = (to_send.size()+name.size()+287);
sprintf(header, "POST /upload.php HTTP/1.1\r\n");
sprintf(header, "%sHost: www.example.com\r\n", header);
sprintf(header, "%sConnection: Keep-Alive\r\n", header);
sprintf(header, "%sContent-Type: multipart/form-data; boundary=---------------------------90721038027008\r\n", header);
sprintf(header, "%sContent-Length: %d\r\n", header, gr);
sprintf(header, "%s\r\n", header);
sprintf(header, "%s-----------------------------90721038027008\r\n", header);
sprintf(header, "%sContent-Disposition: form-data; name=\"upfile\"; filename=\"%s\"\r\n", header, name.c_str());
sprintf(header, "%sContent-Type: text/plain\r\n", header);
sprintf(header, "%s\r\n", header);
sprintf(header, "%s%s\r\n", header, to_send.c_str());
sprintf(header, "%s-----------------------------90721038027008\r\n", header);
sprintf(header, "%sContent-Disposition: form-data; name=\"post\"\r\n", header);
sprintf(header, "%s\r\n", header);
sprintf(header, "%supload\r\n\r\n", header);
sprintf(header, "%s-----------------------------90721038027008--\r\n\r\n\0", header);
con = connect(sock, (SOCKADDR*)&addr, sizeof(addr));
if(con < 0)
error_exit("Error connect()");
if(send_r=send(sock, header, strlen(header), 0)<0)
error_exit("Error send()");
while(rec=recv(sock, puffer, 2048, 0))
{
if(rec==0)
error_exit("Server quit");
printf("%s", puffer);
}
closesocket(sock);
WSACleanup();
return EXIT_SUCCESS;
}