How to send mouse position from client A =to=>SERVER=to=>client B ? Example code below gives me position output every 2 seconds
What is a better/faster way to do this?
NOTICE: using Winsock and cURL gives antivirus malware warning
USAGE: for remote control
Current TEST example of sending mouse position from client A to SERVER to client A:
1.write mouse position
2.store x,y in send.txt file
3.upload sent.txt to server as temp.txt file
4.remove receve.txt if exist //error 80 if not
5.download temp.txt as receve.txt
6.read receve.txt and display coordinates in console
int x,y; //positions
LPCWSTR s=L"C://Documents and Settings//Administrator//Desktop//c++//FTP//send.txt";//location of file for sending
LPCWSTR r=L"C://Documents and Settings//Administrator//Desktop//c++//FTP//receve.txt";//location of received file
POINT cursor_pos;//for cursor position
HINTERNET hInternet;
HINTERNET hFtpSession;
hInternet = InternetOpen(NULL, INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0);
if (hInternet == NULL)
{
cout << "Error: " << GetLastError();
}
else
{
hFtpSession = InternetConnect(hInternet, L"www.test.net", INTERNET_DEFAULT_FTP_PORT, L"user", L"pass", INTERNET_SERVICE_FTP, 0, 0);
if (hFtpSession == NULL)//not connect
{
cout << "Error: " << GetLastError();
}
else
{
for(;;){
//file input
fstream inp;
inp.open(s);
GetCursorPos(&cursor_pos);
inp<<cursor_pos.x<<" "<<cursor_pos.y<<endl;//write curent position
inp.close();
//UPLOADING
if (!FtpPutFile(hFtpSession, s, L"//public_html//test//temp.txt", FTP_TRANSFER_TYPE_BINARY, 0))
{
cout << "ErrorPutFile: " << GetLastError();
return 0;
}
remove("C://Documents and Settings//Administrator//Desktop//c++//FTP//receve.txt");//error 80 if file exist so remove it
//DOWNLOADING
if(!FtpGetFile(hFtpSession,L"//public_html//test//temp.txt",r,TRUE,FILE_ATTRIBUTE_NORMAL,FTP_TRANSFER_TYPE_BINARY,0))
{
cout <<"ErrorGetFile"<<GetLastError();
return 0;
}//DELETING
if(!FtpDeleteFile(hFtpSession,L"//public_html//test//temp.txt")){
cout <<"ErrorGetFile"<<GetLastError();
return 0;
}
ifstream outp(r);
while(outp>>x>>y){
cout<<"X: "<<x<<" "<<"Y:"<<y<<endl;//read coordinates
}
outp.close();
}
}
}
return 0;
Thank you for your time :)
You might consider SignalR, it's great for those things. See https://pepitosolis.wordpress.com/2013/12/08/signalr-2-0-persistent-connection-another-example-tracking-your-mouse-pointer/ for an example
Related
Here's my entire program:
#include <iostream>
#include <windows.h>
int main() {
//? create the serial port file with read and write perms
HANDLE hPort = CreateFileW(L"COM3",
GENERIC_READ | GENERIC_WRITE,
0,
0,
OPEN_EXISTING,
0,
0);
if (hPort == INVALID_HANDLE_VALUE) {
std::cout << "INVALID_HANDLE_VALUE/6\n";
if (GetLastError() == 2) {
std::cout << "serial port doesn't exist. error code: 2/ERROR_FILE_NOT_FOUND\n";
} else {
std::cout << "error occured with serial port file creation (CreateFileW). error code: " << GetLastError() << std::endl;
}
CloseHandle(hPort);
} else {
std::cout << "serial port created successfully (probably)\n";
}
DCB port_conf;
int err = GetCommState(hPort, &port_conf);
if (err == 0) {
std::cout << "GetCommState failed. error code: " << GetLastError() << "\n";
CloseHandle(hPort);
}
port_conf.BaudRate = 9600;
port_conf.Parity = NOPARITY;
port_conf.ByteSize = 8;
port_conf.StopBits = ONESTOPBIT;
port_conf.DCBlength = sizeof(port_conf);
err = SetCommState(hPort, &port_conf);
COMMTIMEOUTS timeouts_conf;
timeouts_conf.ReadIntervalTimeout = 1;
timeouts_conf.ReadTotalTimeoutConstant = 1;
timeouts_conf.ReadTotalTimeoutMultiplier = 1;
timeouts_conf.WriteTotalTimeoutConstant = 1;
timeouts_conf.WriteTotalTimeoutMultiplier = 1;
err = SetCommTimeouts(hPort, &timeouts_conf);
DWORD buffer_size_read;
char buffer_read[512]{};
int buffer_read_size;
char buffer_read_last[512]{};
while (1){
ReadFile(hPort,
buffer_read,
512,
&buffer_size_read,
0);
std::cout << buffer_read;
// if (buffer_read_last != buffer_read) {
// std::cout << buffer_read;
// }
// buffer_read_size = strlen(buffer_read);
// for (int i = 0; i <= buffer_read_size; i++) {
// buffer_read_last[i] = buffer_read[i];
// }
if (GetKeyState(VK_SPACE) != 0) {
break;
}
}
CloseHandle(hPort);
}
The problem with it is that everything is spit out too fast into cout. I made a miserable attempt at limiting this (it is commented out), but the program just doesn't do anything then. Another attempt was using the timeouts_conf.ReadIntervalTimeout, which Microsoft describes this way:
The maximum time allowed to elapse before the arrival of the next byte on the communications line, in milliseconds. If the interval between the arrival of any two bytes exceeds this amount, the ReadFile operation is completed and any buffered data is returned. A value of zero indicates that interval time-outs are not used.
but it didn't change anything. The serial port is continuously receiving data from a microcontroller in which I will not do the limiting for a pretty specific reason.
I need some sort of reliable way of not spitting everything out to cout at the speed of light. Thanks in advance
I created 2 functions to read and write across a serial port, I am coding in c++ with visual studios 2012, windows 7, 64 bit operating system, and using RS-232 serial cord. The board I'm connecting to is supposed to send 5 characters, TRG 1, upon pressing a button, the code works, however the output isn't always the correct values.
char serialRead()
{
char input[5];
DCB dcBus;
HANDLE hSerial;
DWORD bytesRead, eventMask;
COMMTIMEOUTS timeouts;
hSerial = CreateFile (L"\\\\.\\COM13", GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
if (hSerial == INVALID_HANDLE_VALUE)
{
cout << "error opening handle\n";
}
else
{
cout << "port opened\n";
}
dcBus.DCBlength = sizeof(dcBus);
if ((GetCommState(hSerial, &dcBus) == 0))
{
cout << "error getting comm state\n";
}
dcBus.BaudRate = CBR_9600;
dcBus.ByteSize = DATABITS_8;
dcBus.Parity = NOPARITY;
dcBus.StopBits = ONESTOPBIT;
if ((GetCommState(hSerial, &dcBus) == 0))
{
cout << "error setting comm state\n";
}
if ((GetCommTimeouts(hSerial, &timeouts) == 0))
{
cout << "error getting timeouts\n";
}
timeouts.ReadIntervalTimeout = 10;
timeouts.ReadTotalTimeoutMultiplier = 1;
timeouts.ReadTotalTimeoutConstant = 500;
timeouts.WriteTotalTimeoutMultiplier = 1;
timeouts.WriteTotalTimeoutConstant = 500;
if (SetCommTimeouts(hSerial, &timeouts) == 0)
{
cout << "error setting timeouts\n";
}
if (SetCommMask(hSerial, EV_RXCHAR) == 0)
{
cout << "error setting comm mask\n";
}
if (WaitCommEvent(hSerial, &eventMask, NULL))
{
if (ReadFile(hSerial, &input, 5, &bytesRead, NULL) !=0)
{
for (int i = 0; i < sizeof(input); i++)
{
cout << input[i];
}
cout << endl;
}
else
{
cout << "error reading file\n";
}
}
else
{
cout << "error waiting for comm event\n";
}
switch (input[4])
{
case '1' :
CloseHandle(hSerial);
return '1';
break;
case '2' :
CloseHandle(hSerial);
return '2';
break;
case '3' :
CloseHandle(hSerial);
return '3';
break;
case '4' :
CloseHandle(hSerial);
return '4';
break;
case '5':
CloseHandle(hSerial);
return '5';
break;
default :
CloseHandle(hSerial);
return '9';
break;
}
}
The code runs successfully in the sense that the port is configured correctly and data is being transmitted. The output varies, most of the time the output will print the whole "TRG 1", but randomly (it seems), the output will be "TRG|}|}" or "T|}|}|}|}", i.e. it will be part of the string and every character missing will be replaced with a "|}" instead of the correct characters. This is a problem because I want to be able to send it different values for trigger and run the switch of that variable.
I'm relatively new to serial communication and not an expert programmer so I'm wondering what's going on?
Serial communication is not packet-based. The information doesn't come to you in packages where the entire message can necessarily be read in one go; instead, it's a stream, so you could read half a message, a whole message, more than one message, etc.
As zdan said in the comments, you need to check the number bytes read from ReadFile and use that to compose 5-character packages which are your messages.
Specifically, only the first couple of characters up to the returned number of bytes read are valid; the rest are garbage.
I'm writing program on C++ to make calls (POST requests) to Java Servlets using WinHTTP. When I request POST via HTTP everything is OK, problem occurs when I request via HTTPS. It sends empty requests to the server but cuts off request body (but it has content)
int sendPostRequest(char *pszPostData, LPCTSTR servletUrl, char* resultBuffer, ofstream &outputFile) {
outputFile << "====================================== SENDING REEQUEST ======================================" << endl;
HINTERNET hSession = WinHttpOpen(
userAgent,
WINHTTP_ACCESS_TYPE_NO_PROXY,
WINHTTP_NO_PROXY_NAME,
WINHTTP_NO_PROXY_BYPASS,
0);
if (!hSession)
{
_tprintf(_TEXT("Failed to open WinHTTP session: %ld\n"), GetLastError());
outputFile << "Failed to open WinHTTP session: %ld\n" << GetLastError() << endl;
return NULL;
}
else {
_tprintf(_TEXT("Oppening WinHTTP session successful: %ld\n"), GetLastError());
outputFile << "Oppening WinHTTP session successful: %ld\n" << GetLastError() << endl;
}
HINTERNET hConnect = WinHttpConnect(
hSession,
serverIP,
serverPort,
0);
if (!hConnect)
{
_tprintf(_TEXT("Failed to connect to server: %ld\n"), GetLastError());
outputFile << "Failed to connect to server: %ld\n" << GetLastError() << endl;
WinHttpCloseHandle(hSession);
return NULL;
}
else {
_tprintf(_TEXT("Connection to server successful: %ld\n"), GetLastError());
outputFile << "Connection to server successful: %ld\n" << GetLastError() << endl;
}
_tprintf(_TEXT("Post data : %ld\n"), pszPostData);
outputFile << "Post data : %ld\n" << pszPostData << endl;
DWORD dwDataLen = strlen(pszPostData);
HINTERNET hRequest = WinHttpOpenRequest(
hConnect,
_TEXT("POST"),
servletUrl,
NULL,
WINHTTP_NO_REFERER,
WINHTTP_DEFAULT_ACCEPT_TYPES,
WINHTTP_FLAG_REFRESH);
if (!hRequest)
{
_tprintf(_TEXT("Failed to open request: %ld\n"), GetLastError());
outputFile << "Failed to open request: %ld\n" << GetLastError() << endl;
WinHttpCloseHandle(hConnect);
WinHttpCloseHandle(hSession);
return -1;
}
else {
_tprintf(_TEXT("Opening request successful: %ld\n"), GetLastError());
outputFile << "Opening request successful: %ld\n" << GetLastError() << endl;
}
DWORD dwReqOpts = 0;
DWORD dwSize = sizeof(DWORD);
WinHttpSetOption(
hRequest,
WINHTTP_OPTION_SECURITY_FLAGS,
&dwReqOpts,
sizeof(DWORD));
BOOL done = false;
BOOL rc = WinHttpSendRequest(
hRequest,
contentTypeHeader,
-1,
(LPVOID)pszPostData,
dwDataLen,
dwDataLen,
NULL);
if (rc) {
rc = WinHttpReceiveResponse(hRequest, NULL);
_tprintf(_TEXT("Sending request successful: %ld\n"), GetLastError());
outputFile << "Sending request successful: %ld\n" << GetLastError() << endl;
}
else
{
_tprintf(_TEXT("Send request failed: %ld\n"), GetLastError());
outputFile << "Send request failed: %ld\n" << GetLastError() << endl;
WinHttpCloseHandle(hRequest);
WinHttpCloseHandle(hConnect);
WinHttpCloseHandle(hSession);
return -1;
}
// Get the status from the server
DWORD dwCode = 0;
if (rc)
{
rc = WinHttpQueryHeaders(
hRequest,
WINHTTP_QUERY_STATUS_CODE | WINHTTP_QUERY_FLAG_NUMBER,
NULL,
&dwCode,
&dwSize,
NULL);
}
if (dwCode != HTTP_STATUS_OK)
{
_tprintf(_TEXT("HTTP Request failed: %ld\n"), dwCode);
outputFile << "HTTP Request failed: %ld\n" << dwCode << endl;
WinHttpCloseHandle(hRequest);
WinHttpCloseHandle(hConnect);
WinHttpCloseHandle(hSession);
}
else
{
_tprintf(_TEXT("HTTP Request is ok: %ld\n"), dwCode);
outputFile << "HTTP Request is ok : %ld\n" << dwCode << endl;
// Keep reading from the remote server until there's nothing left to read
DWORD dwBytesToBeRead = 0, dwBytesRead = 0;
//char szBuffer[8192] = { 0 };
//strcpy(resultBuffer, "");
do
{
if (!WinHttpQueryDataAvailable(hRequest, &dwBytesToBeRead))
{
_tprintf(_TEXT("No data available from server? %ld"), GetLastError());
outputFile << "No data available from server? %ld" << GetLastError() << endl;
WinHttpCloseHandle(hRequest);
WinHttpCloseHandle(hConnect);
WinHttpCloseHandle(hSession);
return -1;
}
if (!WinHttpReadData(
hRequest,
//szBuffer,
resultBuffer,
//sizeof(szBuffer),
RESULT_BUFFER_SIZE,
&dwBytesRead))
{
_tprintf(_TEXT("Failed to read data from server: %ld"), GetLastError());
outputFile << "Failed to read data from server: %ld" << GetLastError() << endl;
WinHttpCloseHandle(hRequest);
WinHttpCloseHandle(hConnect);
WinHttpCloseHandle(hSession);
return -1;
}
if (dwBytesRead > 0)
{
//szBuffer[dwBytesRead] = 0;
resultBuffer[dwBytesRead] = 0; // NULL-terminated returned buffer
}
} while (dwBytesRead > 0);
WinHttpCloseHandle(hRequest);
WinHttpCloseHandle(hConnect);
WinHttpCloseHandle(hSession);
return 0;
}
return -1;
}
Where pszPostData - content of request body, servletUrl - url to Servlet (endpoint), resultBuffer - call result will be written to this buffer, outputFile - file for logs.
So how to make HTTPS calls without cutting of request body?
Regarding WinHttpSendRequest method, at the 2nd paramaet insert: L"content-type:application/x-www-form-urlencoded" and on the 3rd paramer -1 which is according to w3.
It should work with this correction.
Also, check the encoding of your .php file, gave me a trouble once.
I came across this today as I was facing a very similar issue. In WinHttpConnect() I was sending pswzServerName as 'example.com'. Problem is, in Apache, I was forcing a redirect on domain.com to www.domain.com and also http to https. This redirect was causing no POST data to be sent, wrong content-length header, and wrong content-type header because I had specified example.com in WinHttpConnect().
Two solutions worked with the last being the best choice :
Removing my htaccess non-www to www and http to https redirect
OR
just changing `pswzServerName` to 'www.example.com' (including the www.) in WinHttpConnect()
Spent a long time trying to figure out why winhttp wasn't working as this was easily overlooked so hopefully it helps someone else that might be in the same boat.
Even if it is an old question, this might be helpful:
Add WINHTTP_FLAG_SECURE to the WinHttpOpenRequest, and it should work.
...
HINTERNET hRequest = WinHttpOpenRequest(
hConnect,
_TEXT("POST"),
servletUrl,
NULL,
WINHTTP_NO_REFERER,
WINHTTP_DEFAULT_ACCEPT_TYPES,
WINHTTP_FLAG_REFRESH+WINHTTP_FLAG_SECURE); /// Here
...
UPDATE:
Looking through the protocol here, I can't figure out what goes into the Unsized Envelope Record. I can't find any examples online.
ORIGINAL:
I have the following WCF service
static void Main(string[] args)
{
var inst = new PlusFiver();
using (ServiceHost host = new ServiceHost(inst,
new Uri[] { new Uri("net.pipe://localhost") }))
{
host.AddServiceEndpoint(typeof(IPlusFive), new NetNamedPipeBinding(NetNamedPipeSecurityMode.None), "PipePlusFive");
host.Open();
Console.WriteLine("Service is Available. Press enter to exit.");
Console.ReadLine();
host.Close();
}
}
[ServiceContract]
public interface IPlusFive
{
[OperationContract]
int PlusFive(int value);
}
[ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)]
public class PlusFiver : IPlusFive
{
public int PlusFive(int value)
{
Console.WriteLine("Adding 5 to " + value);
return value + 5;
}
}
I output the adding 5 line so I know if the server processed the
request or not.
I have a .NET client that I used to test this and everything works as
expected.
Now I want to make an unmanaged C++ client for this.
I figured out how to get the name of the pipe, and write to it.
I've downloaded the protocol from here
I can write to the pipe but I can't read to it. Whenever I try to read from it I get a ERROR_BROKEN_PIPE 109 (0x6D) The pipe has been ended. error. If I replace the read with a write, the write is successful, so I don't think that the pipe is closed, at least not until I try to do a read.
Here is how I'm connecting to the pipe.
HANDLE OpenPipe(OLECHAR* bstrGuid)
{
wstring pipeName = L"\\\\.\\pipe\\";
wstring strGuid = bstrGuid;
pipeName.append(strGuid.substr(1,36));
wcout << "Pipe Name " << endl;
wcout << pipeName.c_str() << endl;
HANDLE hPipe = CreateFile(pipeName.c_str(), GENERIC_WRITE | GENERIC_READ, FILE_SHARE_WRITE | FILE_SHARE_READ, NULL, OPEN_EXISTING, NULL, NULL);
if(hPipe == INVALID_HANDLE_VALUE)
{
wcout << "failed to create pipe" << endl;
system("pause");
return NULL;
}
return hPipe;
}
this is how i'm creating the first message that I'm sending
std::list<wchar_t> GetFirstMessage()
{
std::list<wchar_t> message;
message.push_back(0x00);// version record
message.push_back(0x01);// major version
message.push_back(0x00);// minor version
message.push_back(0x01);// mode record
message.push_back(0x01);// singleton-unsized mode
message.push_back(0x02);// via record
wstring url = L"net.pipe://localhost/PipePlusFive";
message.push_back(url.length());// via length
for(int x= 0;x<url.length();x++)
{
message.push_back(url[x]); // via
}
message.push_back(0x03);
message.push_back(0x08);
return message;
}
This is how I'm writing it to the file.
int WriteMessage(HANDLE hPipe, LPVOID message, int size)
{
DWORD bytesWritten;
BOOL bWrite = WriteFile(hPipe, &message, size, &bytesWritten, NULL);
wcout << "Bytes Written: " << bytesWritten << endl;
if(bWrite == false)
{
wcout << "fail"<<endl;
CloseHandle(hPipe);
system("pause");
return 1;
}
return 0;
}
list<wchar_t> full_message = GetFirstMessage();
int result = WriteMessage(hPipe, &full_message, full_message.size());
if (result == 1)
{ return 1;}
Here is how I'm writing the end message
wchar_t message = 12;
result = WriteMessage(hPipe, &message, 1);
if (result == 1)
{ return 1;}
here is how I'm trying to read the response
char buffer[10];
DWORD bytesRead;
BOOL bRead = ReadFile(hPipe, buffer, 1, &bytesRead, NULL);
if(bRead == false)
{
wcout << "fail read"<<endl;
wcout << "error: " << GetLastError() << endl;
CloseHandle(hPipe);
system("pause");
return 1;
}
I'm new to c++, so I don't know if I'm not following the protocol correctly or making a stupid mistake in the way I'm trying to do this?
UPDATE:
The problem was that I was writing the pointer address to the named pipe instead of the contents of the list. I've fixed that And I'm now able to read the Preamble Ack Record. Now I have to figure out what needs to be sent for the next part of the protocol.
Check if this works for you
Try to open a named pipe. (CreateFile)
Set the read mode and the blocking mode of the specified named pipe. (SetNamedPipeHandleState)
Send a message to the pipe server and receive its response. (WriteFile, ReadFile)
Close the pipe. (CloseHandle)
How can I upload a directory using the FtpPutFile function or all the directory this is my code:
void FileSubmit(path ToUpload)
{
HINTERNET hInternet;
HINTERNET hFtpSession;
hInternet = InternetOpen(NULL,INTERNET_OPEN_TYPE_DIRECT,NULL,NULL,0);
if (hInternet == NULL) cout << ("No Internet Connection..\n");
else cout << ("Internet Connection Established\n");
hFtpSession = InternetConnect(hInternet,"host",INTERNET_DEFAULT_FTP_PORT, "user","pass", INTERNET_SERVICE_FTP, INTERNET_FLAG_PASSIVE,0 );
if (!hFtpSession) cout << ("Error in the FTP connection..\n");
else
{
cout <<("FTP Connection Established!\n");
FtpPutFile(hFtpSession, "D://test//*.doc", ToUpload.string().c_str(), FTP_TRANSFER_TYPE_ASCII, INTERNET_FLAG_PASSIVE);
if (!FtpPutFile(hFtpSession, "D://test//*.doc", ToUpload.string().c_str(), FTP_TRANSFER_TYPE_ASCII, INTERNET_FLAG_PASSIVE))
cout <<("File Transfer Failed..\n");
else cout << ("The file was sent..\n");
InternetCloseHandle(hFtpSession);
InternetCloseHandle(hInternet);
}
}
int main()
{
FileSubmit(destination);
return 0;
}
You can't 'upload' directories directly; you would need to create the directory with FtpCreateDirectory() then iterate over all the files in your local directory and call FtpPutFile() on each of them.
If you need a way of getting a list of files in a directory you can use Boost.Filesystem. Look for the directory_iterator and recursive_directory_iterator classes.