C# :: How To Send Message To Multiple Sockets In List Object
Oct 7, 2012
Have tried to track down the delay? Which function takes that long? Have you printed some logs or measured the time of the functions? No I am not sure how to do that! I debugged it but i didn't see any difference! I definitely think its the logic in the receive code that's "inefficient" what do you think about that? Do you think there's a more efficient way of receiving messages and sending them? Because what I am doing is receiving one then calling send and sending that message out to all users then receiving another one then calling send and sending it out to all users and repeating that process till all the messages are sent, both methods are using a loop to send to all users. DO you think i should receive all messages then send them all out at once? or is that less efficient?
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Apr 9, 2013
I'm connecting to my website through sockets, like this:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <winsock2.h>
#include <string.h>
int main(int argc, char *argv[]) {
WSADATA wsadata;
if (WSAStartup(MAKEWORD(2,2), &wsadata) == -1)
[Code]...
I want to send GET to a certain web page. How can I do that?
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Jan 26, 2013
I have struggled to send email from my MFC applications using severl methods:
1) http via my server - works but limited
2) M$ Outlook automation - works but not easily interchangeable between machines
3) Windows Sockets - available information simply too complicated
4) Purchase an ActiveX control - I hate black box solutions and am too cheap
I have looked at P. J. Naughter's class
CPJNSMTPConnection v2.99
An MFC class to encapsulate the SMTP protocol
[URL]
This approach requires the implementation of OpenSSL which turns out to be nothing short of a nightmare to install (so I never got it to run). I am looking for an example of an application that utilizes SMTP via Windows sockets api.
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Nov 6, 2014
I've been struggling with an object when trying to add it to a list with [Listname].push_back. You see, I have a list with some objects that will be rendered in the screen (Called objects) and a function to create a text box with some text. The function in question is the following:
void reprEv(int evNum, ALLEGRO_BITMAP *txtbxim) //Event to call, default text box image.
{
textBox *txtBox = new textBox("Line 1 ", "Line 2 ", "Line 3 ", "Line 4 ", "Line 5 ", textboximage);
objects.push_back(txtBox);
[Code]....
(txtNum is increased then space is pressed, and when certain screen (maxScreen) have been shown, then it will go to the playing state)
My problem begins when the text box is created, because it's supposed to add only 1 text box to objects list, but instead adds hundreds of text boxes to objects.
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May 30, 2014
First of all i create single server single client program and then using thread i make multiple client to connect to server.
while(true){
csock = (int*)malloc(sizeof(int));
if(nClient<=maxClient){
if((*csock = accept( hsock, (SOCKADDR*)&sadr, &addr_size))!= INVALID_SOCKET ){
[Code].....
The clients send message to the server and server echo back the message to that particular client. But i want that the server will echo back ones's message to all clients. Suppose 5 clients are connected to the server. So whenever one client send a message to the server, the server will send that message to all 5 clients.
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Aug 16, 2012
I want to send SMS through my C# application.
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Feb 17, 2013
I want to send messege to click select check box. I can click button but I don't know how to select check box with VC.
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Jan 2, 2014
I have a problem in a c++ project. I have created a .dll file and hooked to an .exe
I want this .dll to make a ping or to send a message like hello somewhere, and IF ping or message doesn't receive an answer that's means the user has suspended-terminated this dll from the exe then the exe will close. How can i do that?
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Nov 29, 2010
I have a tcp client - server implementation running in the same program, on different background worker threads. There will be instances of this program on multiple computers so they can send and receive files between each other. I can send files sequentially between computers using network stream, but how would I send multiple files at the same time from computer A to B.
Sending multiple files over one connection ( socket ) is fine, but having multiple network streams sending data to a client, the client doesn't know which chunk of data is apart of which file ?
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Oct 16, 2013
I have to create a list of words and then when one is repeated the program has to show with a message.
Code:
#include <vcl.h>
#include <iostream.h>
#include <conio.h>
#include <string.h>
#pragma hdrstop
[Code] ....
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Apr 19, 2015
The label "You already picked that" doesn't always appear. Sometimes it does, but only if a duplicate has been entered at least 3 times. I haven't been able to correct this. I am new to programming and array-based lists.
//Objective: randomly generate an integer between 1 and 100, input user guess as to what number it is, and output "correct!" if user guess is the random number, or output "Too high" if the user guess is too high, or output "too low" if the user guess is too low, "you already entered __" if a duplicate is entered and allow the user to keep guessing until they guess the correct number
//libraries
#include <ctime>
#include <cstdlib>
#include <iomanip>
#include <iostream>
using namespace std;
struct Guess {
[Code] ....
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Oct 11, 2014
I'm trying to print a single linked list backward with functions/classes. I have created the main file and 3 header files. But I'm getting an error on one of the header files, linkedListIterator after adding #include "linkedListType.h". It says that "linkedLlistType.h" is calling itself. And when I try to run it, I get an error of "too many header files." I have tried changing the headers many times, but nothing seems to work.
.cpp file:
/*(Printing a single linked list backward) Include the functions reversePrint and recursiveReversePrint, as discussed in this chapter, in the class linkedListType. Also, write a program function to print a (single) linked list backward. (Use either the class unorderedLinkedList or the class orderedLinkedList to test your function.)*/
#include "linkedListType.h"
#include "orderedLinkedList.h"
#include "linkedListIterator.h"
#include <iostream>
using namespace std;
struct nodeType
[Code] ....
header files:
[URL] .... (error in this header file)
[URL] ....
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Feb 4, 2015
If I have a class object and multiple vectors, how do I make sure I store the same instance of that object in both vectors? For instance:
Object object;
std::vector<Object> vectorOne;
std::vector<Object> vectorTwo;
vectorOne.push_back(object);
vectorTwo.push_back(object);
Are the objects in both vectors the same instance of the object? Like if I called vectorOne[0].setValue(somethingDifferent); would the value be changed for the object in both vectorOne and vectorTwo? If not, how do I make sure that I only have one instance of the object I'm trying to store in multiple vectors?
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Feb 13, 2013
how to structure my classes so that they all "wire together" and inherit the proper functions and data that I want them to. I want to have a Car.c and car.h which are "wired" with body.c/body.h, which in turn is wired with a frame.c/frame.h, wheel.c/wheel.h, and driver.c/driver.h.
Each part of the car holds some type of data, mostly ints: The car has a (total) mass and car_name. The body has a mass and color. The frame has a mass. The wheel(s) have a mass and force. [There will be 4 instances of wheel] The driver has a mass and driver_name. Each of these functionalities must come from their respective .c and .h files, and be amalgamated in the car.c and car.h (which should contain all the functionality of its parts). Then, in my main test program, I am to make an instance of car and hardcode in its values of: mass (which comes from the total mass of all of its parts, this is where i start to lose it.
How will I access its parts' masses in the test program?), color (a character array), current position (an integer), current velocity (an integer), and current acceleration (which comes from the total newton force of the 4 wheels, again this is where I start to get very confused). (Then in the test program I am to print out a simulation of this car over a period of 100 seconds, and show its position, velocity, and acceleration at each point (based on the mass, total newton force, and starting position). This part is of course a simple while loop, and is somewhat trivial.)
From what I understand, I will need to allocate memory for all of the data each class holds. Then, using function pointers, as well as #include "X.h" , I will need to somehow link up all of the classes together so that car has access to all of the parts' functions which set, for example, the newton force of each wheel.
We have learned a slight bit about structs, malloc, sizeof, and pointers, but I have not used them to link functionality or data from separate classes together.
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Jul 13, 2013
Until recently I have been using select() to wait for activity on file descriptors, however this seems less efficient than poll. I rewrote the program using poll:
Server:
Code:
#include <stdio.h>#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>
#include <sys/types.h>
}
[code].....
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Oct 30, 2013
I 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 .
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Nov 1, 2013
I 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?
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Feb 22, 2012
I have created a simple basic program that uses sockets but it can only handle one connection, how do I make it so it handles multiple connections?
Server code:
Code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
}
[code]...
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Aug 26, 2014
I have an XML document, formatted as such:
<?xml version="1.0" encoding="UTF-8"?>
<Books>
<Bookmark Name="1984" Folder="C:UsersmillerDownloads1984 (George Orwell) - Audio Book" Time="00:43:58.4080000" Chapter="0" />
</Books>
Each Element named Bookmark has 4 attributes, Name, Folder, Time, and Chapter.
I'd like to be able to just put all of them in ONE type of container, without making multiple lists... Is there any way, using Linq to XML, to maybe add all of these values to a Tuple?
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Feb 10, 2014
I have a standard linked list in template format (with T being the typename) with the following relevant insertion operators:
bool PushFront (const T& t); // Insert t at front of list
bool PushBack (const T& t); // Insert t at back of list
I want to build a list of pointers to objects (we'll call them objects of class Box for simplicity) that is member data for a parent class (we'll call that class Warehouse). However, I want to have a constant Box....const Box INVISIBLE_BOX = Box(); that represents a nonexistent Box. However, I cannot use either
PushFront(&INVISIBLE_BOX)
or
PushBack(&INVISIBLE_BOX)
to add INVISIBLE_BOX to the list of boxes without getting an invalid conversion error invalid conversion from âconst warehouse::Box*â to âwarehouse:: Box*â [-fpermissive]
What can I do to make it take a constant Box? I am using g++ to compile these files.
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Oct 31, 2014
public class Customer
{
public int Id { get; set; }
public string Name { get; set; }
public List<Order> Orders { get; set; }
public Customer() {
Orders = new List<Order>();
}
}
This object is called as
var cust = new Customer
{
Id = 1, Name = "Khatana", [b]Orders.Add(new Order())[/b]
}
I want to ask, Orders.Add(new Order()) is a wrong way, but why..!!... as List<Order> already has been initialized in Customer constructor, then why it is again required to be initialized in object initialization.
Is this a correct way
List<Order> orders = new List<Order> {aaa.....bb....cc};
var cust = new Customer
{
id = 1, Name = "Khatana", Orders = new List<Order> { orders }
}
Why we need to initialize a list in an object initialization, where as the list has been already initialized in object constructor.
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Nov 4, 2014
I've changed up my code to the retail checkout WFA I am trying to make. I have an item list filled with objects of the now globally accessible 'Item' class, but I'm having trouble.
Essentially, I want to send an object of the item class chosen from a dropdown menu to form2, where I will fill in certain blank attributes with data entered in form2's text boxes and comboboxes. The problem, it seems, is I need another itemlist in form2 that will hold the object being passed to form 2, so I can then pass all the information to textboxes on form3 (the receipt/review page). It's been more than a year since I coded with C#, and I've forgotten quite a bit. I was also not able to find any tutorials on building an item list without an associated combobox or droplist, which is what I need.
This is my item class (minus most of its properties so the page doesn't stretch).
class Item {
public string prodName;
public string fName;
public string lName;
public string ccNum;
public string ccProv;
public string shipAddr;
[code] ....
For anyone who didn't see my last question, I'm in a User Interface Design class, not a C# class. I know this probably isn't the best code out there, but for my purposes the program just needs to compile beginning to end and pass the data like it should.
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Apr 14, 2014
I'm having a problem trying to modify my patient's data. It seems to work, but once the block of code ends it does not save to the linked list.
Problem located in case M.
linked list template header: [URL] ...
patient header: [URL] ...
patient implementation: [URL] ...
#include <iostream>
#include "listTemplate.h"
#include "PatientRecord.h"
using namespace std;
char menu() {
char input
[Code]...
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Apr 9, 2014
i have a program that is a Mediastore and i have 4 classes. Produkt: which is a class with a few variables that i use to add products to my List.
public class produkt
{
public string Name;
public string price;
[Code]....
then i have my Lager class which i use to add my products to my list and Listbox. This is done by having 3 textfields where i say what the Name,SerialNumber and Price of the object i created should have.
In this class i also have 2 more textfields and a button that make it possible to add a quantity of the selected listbox object of my product Class. if the item im trying to add a quantity to dosent exist i get a question if i wanna add that product and it adds that product to the list. if however the product allready exist its suposed to add the quantity with the selected amount from my textbox.
Then I have my Class Kassa which is a Form with 2 Listboxes. The first listbox share the same List as the one in my Lager class and the other listbox is the listbox which i use to take items from my produktlist and put it in my checkout "basket" then i am suposed to be able to choose one of these items from my checkout basket put the amount i want of that item into a textfield called KvantLEv and press the checkout button to be able to simulate a checkout and then this selected item's quantity is suposed to be lowerd by the specified amount and is to be removed from the checkoutlistbox but this aint working... this is my checkout function so far
private void cashout()
{
produkt p = new produkt();
int a = VaruKorg.Items.Count - 1;
[Code]....
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May 16, 2013
Error:
--------------------Configuration: nc - Win32 Debug--------------------
Compiling...
cv.cpp
Linking...
LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
Debug/nc.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.
nc.exe - 2 error(s), 0 warning(s)
Compiles with 0 error but on running 2 Errors appear.
I'm Inputting data of an object from user and then inserting it in the link list.
#include <iostream>
//#include <fstream>
using namespace std;
#define LEN 100
////////////////////////////////////////////////////////////////////////////////////////////////////
class employee{
[Code] ....
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Apr 19, 2013
I have a list of objects that I need to read information from each object to compare to a user input prompt.
#include "Passenger.h"
#include "Reservation.h"
#include "Aircraft.h"
#include <iostream>
#include <fstream>
#include <string>
#include <list>
using namespace std;
//Function Prototypes
void flightRoster(list<Reservation>&);
[Code] ....
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