C :: Linux Socket Multiple Connections But With Different Time Rate
Feb 6, 2015
i want to write a server and a client as below:
The server(and not the clients) will connect to the clients and just send a message. The idea is to be able to connect at each client a different time.
e.g
every 10mins connect at client 1
every 2mins connect at client 2
every 1hour connect at client 3
and so on...
So how to implement this ? Should i create a new child process for each connection and what about the timing ? A pseudo code also will work.
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Jan 29, 2014
I'm attempting to write a little UDP socket library in c++ on linux so a user can just create a new instance of a UDPSocket class, specify destination ip and port, and just connect. Then the user should be able to call send() or receive() in any order they want.. and here I encounter a little problem..
Most of the tutorials for udp socket sending out there include a bind() call when you create your "server" that is supposed to receive data, but the code that send data does not need one. Because I also want my library to support unicast/broadcast/multicast, I have read that I need to set the socket option SO_REUSEADDR on my sockets (since multiple sockets will need to be connected to same destination IP/port for broadcast/multicast)
My question is.. do I need to create 2 socket handles per "UDPSocke in order to make this work? One for sending and one for receiving data? In my code when I try to work with only 1 socket, it is only able to receive stuff from itself on unicast.. Or should I just remove the SO_REUSEADDR when in unicast mode, then try to bind with both sockets, accept that the bind will only work on the 1st socket, and take it from there?
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I want to establish multiple connection with database at a time.
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May 18, 2012
following code because i want to handle multiple connection and want to implement in my project
Code:
int newsockfd, pid;
socklen_t clilen;
struct sockaddr_in cli_addr;
[Code]...
My Questions
1. What these lines is doing
Code:
newsockfd = accept(m_sockfd, (struct sockaddr*) &cli_addr, &clilen);
Code:
close(m_sockfd);
Code:
close(newsockfd);
2. And why there is no create(), connect(), read(), write() methods for client
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Apr 4, 2012
I 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] ....
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Oct 31, 2013
I am writing on C simple socket programs in Linux. I wrote client and server C programs. My client program is Code: #include<sys/socket.h>//for socket(), connect(), sendto() and recvform()
#include<sys/types.h>
#include<netinet/in.h>
#include<netdb.h>
#include<stdio.h>// for printf() and fprintf()
[Code]....
I am just testing whether can connect or not. I run server program first and client later. But when I run client, it showed that "Address family not supported by protocol".
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Mar 16, 2014
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void socket_server_demo(void){
int iserver_socket = -1;
int iclient_socket = -1;
unsigned char bTemp[1024];
unsigned int iTemp = 0;
[Code] ....
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Sep 3, 2013
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ports support ports defined variable.
Code:
#include "stdio.h"
#include "stdlib.h"
#include "unistd.h"
#include "errno.h"
#include "string.h"
#include "sys/socket.h"
[Code] .....
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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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void menu();
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int main() {
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thread.launch();
[Code] ....
In my program, after menu when he selects a choice, next display of menu wait the termination of the selected thread.
while i want to show menu right after when a menu is selected.
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May 9, 2012
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Here is my code
#include "NetManager.h"
NetManager::NetManager(){
}
NetManager::~NetManager() {
[Code] ....
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Oct 16, 2012
I made a C++ Wrapper on top of ODBC.
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The Connection class holds the Database Connection ODBC Handle.
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Now I'm just wondering.
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Jun 7, 2013
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Account.h
#ifndef ACCOUNT_H
#define ACCOUNT_H
#include <iostream>
#include <string>
using namespace std;
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[Code] ....
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I tried to make re-init of the codec:
Code:
....
ost->st->codec->bit_rate = 150000;
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avcodec_copy_context(newContext, ost->st->codec);
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int calcWeeklyPay(int paidHourly, int annualSalaryHourly)
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[Code]...
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#include <iomanip>
#include <cmath>
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[Code] .....
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Oct 5, 2014
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Code:
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[Code] ....
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Oct 8, 2013
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I had write my own coding, but it keeps error. it is okay. But i still don't think i could share here? Still running... I will update my coding for you alls to check for any syntax or logic error. The problem is i need to calculate if the employee work for more than 40 hours which 1.5 times.
Code:
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <stdio.h>
#include <iostream.h>
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[Code] .....
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#include<stdio.h>
int main(){
int i,j=0,n,time,remain,flag=0,ts;
int sum_wait=0,sum_turnaround=0,at[10],bt[10],rt[10];
int ganttP[50],ganttStartTime[50];
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[Code] ....
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Question
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Feb 22, 2015
This is what so far i did
Code:
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#include <ctype.h>
#include <bsd/string.h>
int
main(void)
[Code] ....
How to do this Using the fork(), execvp() and waitpid() system calls, launches the requested program and waits until the program has finished.
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Jul 6, 2014
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Sep 22, 2014
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Here are my files:
extern_static.c Code: extern int i;
int main(void)
{
[Code]....
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Aug 16, 2013
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Apr 24, 2013
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