C++ :: Sending And Receiving Data?
Jul 23, 2014If I have a text file named, stuff at a specified path in the c : drive, how do I send the contents of this file to another computer using the Internet?
View 5 Replies
ADVERTISEMENT
C/C++ :: Sending And Receiving Struct Over TCP Socket In Linux
Apr 4, 2012I am trying to code a C program for sending a struct over TCP Socket in Linux! The code is as follows:
/*
** sravan_server.c - a stream socket (TCP) server Program
*/
#include <stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<errno.h>
#include<string.h>
[Code] ....
C Sharp :: Receiving Data Using Bluetooth Dongle (BLED 112)
May 30, 2013I am doing a project where i need to develop a C# windows application. I need to receive data in my laptop (windows 7) using BLED 112 Dongle from NRF 8001 which is Bluetooth Low Power. Actually NRF 8001 is connected to a sensor and it is streaming the sensor's data. I need to receive those data using Dongle and save those data.
I tried doing this by using the library provided by 32feet.net but using this i could only discover the device but wasn't able to connect my Dongle to NRF 8001. So i couldn't proceed further and i am stuck since couple of weeks already ....
I already tried searching in the internet but didn't find much info however i recently i got a API for my Dongle in this link
[URL] .....
C++ :: Sending Data From A File Via Winsock?
May 11, 2013I want to send data from a file via winsock. The problem is that the only first line in the file is send.
Client
#include <iostream>
#include <winsock2.h>
#include <fstream>
#include <string>
#pragma comment(lib,"ws2_32.lib")
#define SERVER "127.0.0.1" //ip address of udp server
[Code] ....
C/C++ :: Sending Data To USB Port In Ubuntu?
Apr 21, 2014How to send a keystroke or a mouse event to another running process in Ubuntu? I want to write a C program that reads data from the USB port sent by AVR Micro Controller board continuously.In response to that it checks the data received and sends a command to another process running on the computer? Example,when the program reads 101 from the USB port it sends left mouse button down to the VLC media player window that is currently running?
View 1 Replies View RelatedC++ :: Sending Variable Amount Of Data Over Winsock?
Oct 31, 2013Client:
Code: ....
string cmd = "dir c:filequeue > ";
string outputFilePath;
outputFilePath.append(getTempPath());
outputFilePath.append(" est.txt");
cmd.append(outputFilePath);
system(cmd.c_str()); // dir c:filequeue > %temp% est.txt
string content = get_file_contents(outputFilePath.c_str());
send(s, content.c_str(), content.length(), 0); I'm executing the "dir" command to get a listing of Folders/files of one Folder. Then I read the Output of the file and send it over winsock to the Server.
Now, the Problem is, I don't know how I can handle the recv properly, cause I have to set the buffer size without knowing, how much data is actually transfered. Sometimes maybe no files are in c:filequeue, sometimes a 100k.
So I tried to make recv as a Loop:
Server:
Code: ...
while (rc != SOCKET_ERROR) {
printf("
#");
gets(buf); //please no discussion about gets, I will Change this later ;)
if (strcmp(buf, "ls") == 0){
send(connectedSocket, "LIST", 4, 0);
[Code] .....
now it works, but as the recv blocks, it will never leave the Loop, even when the Transfer is finished.What should I do?
I believe I could make unblocking sockets, but that's a bit complicated. Isn't there an easier solution, with malloc'ing the buffer or a Signal when to leave the recv Loop?
C/C++ :: Winsock Sending Packet Header With Data
Apr 16, 2015This question is kind of a continuation of Winsock Sending X264 Nal Unit. I was finally able to solve that problem, turns out in the end I was missing a memcpy(). Now my current issue is, when I try to decode the received packets, I am shown a bunch of errors. I have attached a picture with my decoding errors. So since I am using a reliable multicast socket, which doesn't guarantee order of delivery. My initial thought is that I am getting packets out of order.
So my question is, how would I attach a packet header to my current data? Could I get away with sending the header separately? Similar to what I am doing with the nal length. If I do attach my header to the packet data, what is a good way to delimit the two?
Server:
#include <WinSock2.h>
#include <WS2tcpip.h>
#include "wsrm.h"
#include <Windows.h>
#include <stdio.h>
#include <stdint.h>
#include <iostream>
#include "x264Encoder.h"
[Code] ....
My client is just reading packets into a vector, because decoding it right away was too slow. So I thought that might have been an issue, so I decided to read in 200 packets just for testing purposes.
Attached image(s)
C Sharp :: Server Sending Data Then Client Receive And Store In Database Table In Windows Service
Dec 22, 2014When server send data then client receive that data, in C# windows services where data receive continuously (Using IP Address and port number) . This below code writing in console application . i want implement same logic in windows service side. but i want data receive continuously.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
[Code]....
Above code write in console application, same logic implementing in windows service, but i want data receiving continuously
C/C++ :: Receiving Information From A File?
Nov 13, 2014I want to receive an information from a file. For instance, you created a file name "sample.txt" via fstream and stored a bunch of people's name, address, phone number in that "sample.txt".
Now, I want to see what's stored in this file. Suppose, I wanted some particular guys address, phone number by just typing is his/her name.
How to relate the name with address and phone number of particular people? I just started the file creating so I wanted to know about it.
#include<iostream>
#include<conio.h>
#include<fstream>
#include<string>
using namespace std;
int main() {
ofstream outputData;
[code].....
C :: Client Not Receiving Time From Server
Sep 2, 2013I'm building a client server which is communicating.I am trying to use the function recvfrom, but have several bugs, so I might have the recvfrom function in the wrong part of my code.
Code:
int talk_with_server(int fd) {
printf("Test.
");
char buf[LEN];
int n = read(fd, buf, LEN);
[Code]....
C++ :: UDP Client Stop Receiving Packets
Jul 22, 2012I have a simple UDP client that should be able to send and receive packets. It does its job, however if there are no packets received for a while it stops listening for any new packets and I'm not sure what's causing it.
This is my code:
#define WIN32_LEAN_AND_MEAN
#include "Client.h"
#include <winsock2.h>
#include <ws2tcpip.h>
#include <vector>
#include <sstream>
#pragma comment(lib, "Ws2_32.lib")
[Code] ....
C :: Program Works Primarily By Receiving User Input
Jun 24, 2013My program works primarily by receiving user input however; using 'char' and 'fgets' i have to stipulate how many characters i want assigned, and this isn't practical for what I am after. Example below.
Code:
char example[50];
printf("What colour is the sky?
");
fgets(example, 50, stdin); Is it possible that the assigned number (in this case '50') is determined strictly by the user input?
for example, user input is Blue then 50 is then 5?
C :: How To Calculate Total Sum Of Delay Of Receiving Side Packet
Dec 17, 2014I want to calculate the total some of delay pf receiving Side Packet . Code is as Follow ..
What is weird that even if i invoke a sleep of 2 sec ,than its show delay always zero. Delay will be in microsec ..Is there any problem with logic or anything else..
Code:
do
{#pragma omp parallel private(nthreads, tid) {
/* Obtain thread number */
tid = omp_get_thread_num();
if (tid == 0) {
nthreads = omp_get_num_threads();
[Code]...
C++ :: Build Array Of A Size After Receiving User Input
Sep 25, 2013I'm trying to build an array of a certain size, after receiving user input. The method I'm trying is
int var = 3;
int* ar = new int[var];
When doing tests I did this (and it worked) and red flags popped off in my head.
int var = 3;
int* ar = new int[var];
ar[0] = 0;
ar[1] = 1;
ar[2] = 2;
ar[3] = 3;
ar[4] = 4;
cout << ar[0] << ar[1] << ar[2] << ar[3] << ar[4] << endl;
This method is considered safe, and possibly tell me why I'm not getting stack errors when trying to overload the array?
Visual C++ :: Receiving Windows Message In Console Application?
Oct 11, 2013I'm trying to write a program that passes Windows messages back and forth from another program that controls a laboratory instrument. I was able to write a program that successfully passes instructions, as evidenced by the instrument doing what I tell it. However, I am having trouble getting a return status from the instrument. The manual instructs the following:
// demo code, etc.
// send message to the instrument operating software here...
SendMessage(hwnd, WM_COPYDATA, tag, (LPARAM) &cd)
Either a completion message or return data is returned. Remote commands ReturnStatus, ReturnTiming, and ReturnData return data. In either case, data is received through an asynchronous windows message inside Win32 COPYDATASTRUCT type data packet.For example, a typical OnCopyData window callback is shown below, where the string data retrieved is finally stored into a Microsoft CString object. Note the use of variable replyTag, discussed above, which is used to isolate the correct windows message returned.
BOOL CUserDlg::OnCopyData(CWnd* pWnd, COPYDATASTRUCT* cd) {
….
if (cd->dwData == replyTag) {
/* String pointing to status */
CString retStatus = (char*) cd->lpData;
}
….
}
I can't tell if my problem is in generating the replyTag, getting the HWND to my own console window, or the actual receiving part of the code.
When setting the replyTag, the manual instructs: UINT replyTag = RegisterWindowMessage(“SOFTMaxProReplyMsg”);. However, I have to put an "L" in front of the string or I get a data type error (can't convert const char* to LPCWSTR).
When setting a HWND for myself, the manual instructs: HWND MyWnd = GetSafeHwnd().
That produces an error because GetSafeHwnd is a function of the Cwnd class, and I don't have a Cwnd. I have replaced it with HWND MyWnd = GetConsoleWindow();
When listening for the reply message, the manual instructs what I quoted above. However, I again don't have a Cwnd. I therefore simply used
if (cd.dwData == replyTag) {
CString retStatus = (char*) cd.lpData;
}
The above if statement always evaluates false, and the cd.lpdata contains the message that I had sent out instead of a reply message. How to get a reply using my console application. Here is the full code of my function:
Code:
#include "stdafx.h"
#include<iostream>
#include<vector>
#include<string>
#include<afxwin.h>
using namespace std;
void SendCommand(string command) {
// Get tags to identify the receiving and sending messages
[code]....
Visual C++ :: MFC- Receiving Button Click Message Failed
Oct 2, 2014I've created a new dialog in my MFC dialog based application. the new dialog contains 5 control buttons. The following happens and I don't understand why?
1. click on buttonX. (result ok, OnBnClicked message is sent)
2. click on on any place of the application, but not on the dialog.(removing focus from dialog)
3. click again on buttonX (FAILED, OnBnClicked message is NOT sent). but if instead I click on any other button in the dialog (result ok, OnBnClicked message is sent).
And when I do:
1. ...
2. ...
3. click on the dialog area just to set focus on the dialog again
4. click again on buttonX. (result ok, OnBnClicked message is sent)
**I need to do step 3 only if I want to click again on the buttonX! why?? I think it related to SetFocus() but I m not sure how.
I've tried different style like, tool windows, overlapped, popup. it happens in all the cases.
Code:
class CToolsDlg : public CBDialog {
DECLARE_DYNAMIC(CToolsDlg)
public:
CToolsDlg(CWnd* pParent = NULL); // standard constructor
virtual ~CToolsDlg();
CToolTipCtrl m_ToolsTips;
[Code] .....
C# :: Sending File Over TCP
Sep 16, 2014why this code works only for file of smaller data. When I try to send for istance a image, the image arrive corrupted.
Client:
//read all file
byte[] vett = File.ReadAllBytes(s);
//read filename
[Code]....
C++ :: Sending Constants As Parameters
Nov 21, 2013What's the problem with the following:
Code:
#define K 3;
int max(int a, int b) {
return a>b? a : b;
} int main() {
cout<<max(K, K+3);
return 0;
}
Why is it not allowed, and how is it different from:
Code:
int max(int a, int b) {
return a>b? a : b;
} int main() {
cout<<max(3, 3+3);
return 0;
}
C :: Sending A Packet Over Sockets
Oct 30, 2013I have a socket connection already set up, my thing is what would be the best way to send a packet through sockets? My teacher wants us to convert the packet to bits first before we send it. I think he wants something like this:
Code:
struct packet{
int header
int message
int flag
}clientpacket; m
My question is how do we covert this to bits, before sending it. One of my friends said we can create a char[] array the size of the struct as a buffer. will memcpy() change the struct to bits if I copy it to the buffer?
this is how is suppose to look in bits for the header field/column.
Field : header
Field size(bits): 8
data format: Unsigned int
value example: 1
Value in bits: 0000 0001
I am confused, I think I send a structure over the socket but I did not convert it to bits before I sent it .
C :: Sending Matrix Over UDP Socket
May 18, 2014I want to apply program to send matrix from client and server ,and return back a processed matrix ..
How I can do it using UDP ,it was easy to use tcp for that!?
C :: Sending Integer Via Socket
Dec 18, 2014Verify my Method . I am not getting expected output ..
Code:
int Amount=500;
send(newSocket,Amount,4,0);
close(welcomeSocket);
recv(clientSocket,Amount,4,0);
// Amount= ntohl(Amount);
printf("Data received: %d",atoi(Amount[0]));
C :: Sending Numbers Through Sockets
Nov 1, 2013I want to write a program(s) so that the client sits and waits for a scanf to receive an int, then send to server, server then receives the int, processes it, then goes back to sit and wait for new input. to start with, where do i start! server side, or client side? and also what order do i have to go in my program before the loop to set up the socket, and listen? and then what gets looped to keep the connection open and wait for new receive?
View 4 Replies View RelatedC++ :: Sending A String To Program?
Jul 21, 2013I have a project, to make a program that spams chat programs. I've been trying to figure out how to send a string to an open program such as notepad, or a chat window. I know how to simulate keystrokes but I have yet to figure out or find out any way of sending a string to a program. pseudo code:
int main() {
string a;
int howManyTimes;
cin >> a;
cin >> howManyTimes;
//user enters "pizza"
for(int i = 0; i < howManyTimes; i++) {
//now I want "pizza" to be sent to the program keystroke enter or whatever the correct syntax is sleep
} }
C++ :: Template Of Sending Text
Mar 1, 2013I am writing some code to send text to a third part software. Basically each sending looks like this:
p << "set terminal eps
";
p << "set output '07.eps'
";
p << "plot '-' using ($1 == 0 ? NaN : $1) with lines linecolor 2 title 'comparison ratio',
'-' using ($1 == 0 ? NaN : $1) with lines title 'comparison ratio'
";
p.send(TOex_ar).send(TOnew_ar);
p << "set terminal wxt 7
";
p << "plot '-' using ($1 == 0 ? NaN : $1) with lines linecolor 2 title 'comparison ratio',
'-' using ($1 == 0 ? NaN : $1) with lines title 'comparison ratio'
";
p.send(TOex_ar).send(TOnew_ar);
Each time I have to change the number "07" and "7";decide to add or not the following parts: "using ($1 == 0 ? NaN : $1)", "with lines", "linecolor 2";and write the title 'comparison ratio' and the name of data to send "TOex_ar" and "TOnew_ar".Since I have to do this kind of thing 50 times in my code, and it is in the form of text, I am wondering whether in C++ we can write a template or function to simplify the program, just to input the changing parts.
C# :: Sending Messages To Log In And Password
Apr 20, 2014I wanted to make an program which is sending messages to log in and password, but instead of message it gives me "System.Windows.Forms.TextBox, Text: AND HERE MY TEXT I WANTED.
View 9 Replies View RelatedC# :: Sending X-AMF Type Packets
Jan 10, 2015create BOT that adds friends on one of Chat websites.
Im using C#
On website there is a button that adds user to friends
<li class="friend"><a href="javascript:void(0)">Add Friend</a></li>
I captured packet that is sended to server then that button is clicked
POST (info hided)/amfgateway.php HTTP/1.1Host: (info hided)
Connection: keep-alive
Content-Length: 52
[Code].....
It apears that this is AMF(Action Message Format) type packet Content-Type: application/x-amf it is in binary and this complicates things a little because I cannot send it with regular httpwebreqeuest class(Or I think so)
I used Fiddler4 with AMF plugin to check what data was passed with that packet
It apears that these numbers under content / 0 are User-id that is needed to add user to friends
I did a research with little success finding any usefull examples. I just found that there is a library for FLEX/FLASH remoting called fluorinefx and this should do the job but when I opened documentation it seems little too complex for me.