Use transmitfile (Send File)

Bool transmitfile (socket hsocket, handle hfile, DWORD nnumberofbytestowrite, DWORD merge, lpoverlapped, lptransmit_file_buffers lptransmitbuffers, DWORD dwflags); parameter: hsocket connection-oriented socket handle. The number of bytes to be transferred by the hfile opened file handle nnumberofbytestowrite. The value 0 indicates that the entire file is transmitted. The size of the data block that nnumberofbytespersend sends each time. The value 0 indicates the default value of socket layer. The lpoverlapped pointer to the overlapped structure. The null value indicates that overlapped I/O mode is not enabled. Lptransmitbuffers points to the transmit_file_buffers structure pointer. Null indicates that only files are transmitted. Dwflags has three optional values: tf_disconnect tf_reuse_socket token to provide the receiver code: Socket socketlisten = socket (af_inet, sock_stream, ipproto_tcp); BIND (socketlisten, null, 0); Listen (socketlisten, somaxconn); socket socketread = accept (socketlisten, null, 0); char SZ [1000000]; while (true) {If (Recv (socketread, SZ, strlen (sz )) = socket_error) break; // Write File} sending code connect... transmitfile (hsocket, hfile, 0, 0, null, tf_disco Nnect); // example // sender // handle hfile = createfile (lpszfilepath, generic_read, file_share_read, 0, open_existing, file_attribute_normal, 0); transmitfile (m_socket, hfile, 0, trans_file_length, null, null, tf_disconnect); closehandle (hfile); // receiver ulong lreadsize = 0; char szinfo [trans_file_length] = {0 }; handle hfile = createfile (lpszfilepha, generic_write, file_pai_write, 0, create_always, file_attribute_normal, 0); While (hfile! = Invalid_handle_value) {int isize = Recv (m_socket, szinfo, trans_file_length, 0); If (isize = socket_error | isize = 0) {closehandle (hfile); break ;} else if (isize <trans_file_length) {writefile (hfile, szinfo, isize, & lreadsize, null); closehandle (hfile); break ;}// write the writefile (hfile, szinfo, isize, & lreadsize, null );}