I'm trying to send boolean values through sockets from Client(Python) to Server(C++).
So I have used json and converted the boolean values to string format and send the string through sockets.
Here is my code: Client side (Python):
# TCP Client Code
host="128.0.0.1" # Set the server address to variable host
port=8080 # Sets the variable port to 4446
from socket import * # Imports socket module
import json
s=socket(AF_INET, SOCK_STREAM) # Creates a socket
s.connect((host,port)) # Connect to server address
print "Successfully connected to the server and ready to send some data"
data= json.dumps("{\"A\":true,\"B\":false,\"C\":false,\"D\":false}")
s.send(data)
msg=s.recv(1024) # Receives data upto 1024 bytes and stores in variables msg
print "Message from server : " + msg
s.close() # Closes the socket
# End of code
Now I'm receving them in the format of string along with \n \t tags. How can I interpret the boolean values sent and assign them to required variables in C++.
Here is my code on Server side (C++):
using namespace std;
//Server side
int main(int argc, char *argv[8080])
{
bool Style1;
//buffer to send and receive messages with
char msg[1500];
//setup a socket and connection tools
sockaddr_in servAddr;
memset((char*)&servAddr, 0,sizeof(servAddr));
servAddr.sin_family = AF_INET;
servAddr.sin_addr.s_addr = htonl(INADDR_ANY);
servAddr.sin_port = htons(8080);
//open stream oriented socket with internet address
//also keep track of the socket descriptor
int serverSd = socket(AF_INET, SOCK_STREAM, 0);
if(serverSd < 0)
{
cerr << "Error establishing the server socket" << endl;
exit(0);
}
//bind the socket to its local address
int bindStatus = bind(serverSd, (struct sockaddr*) &servAddr,
sizeof(servAddr));
if(bindStatus < 0)
{
cerr << "Error binding socket to local address" << endl;
exit(0);
}
cout << "Waiting for a client to connect..." << endl;
//listen for up to 5 requests at a time
listen(serverSd, 5);
//receive a request from client using accept
//we need a new address to connect with the client
sockaddr_in newSockAddr;
socklen_t newSockAddrSize = sizeof(newSockAddr);
//accept, create a new socket descriptor to
//handle the new connection with client
int newSd = accept(serverSd, (sockaddr *)&newSockAddr, &newSockAddrSize);
if(newSd < 0)
{
cerr << "Error accepting request from client!" << endl;
exit(1);
}
cout << "Connected with client!" << endl;
//receive a message from the client (listen)
cout << "Awaiting client response..." << endl;
memset(&msg, 0, sizeof(msg));//clear the buffer
recv(newSd, (char*)&msg, sizeof(msg), 0);
if(!strcmp(msg, "exit"))
{
cout << "Client has quit the session" << endl;
}
string str(msg);
cout << "Client: " << msg << endl;
cout << ">";
string data = "Instructions Received \n";
memset(&msg, 0, sizeof(msg)); //clear the buffer
strcpy(msg, data.c_str());
if(data == "exit")
{
//send to the client that server has closed the connection
send(newSd, (char*)&msg, strlen(msg), 0);
}
//send the message to client
send(newSd, (char*)&msg, strlen(msg), 0);
//we need to close the socket descriptors after we're all done
close(newSd);
close(serverSd);
cout << "Connection closed..." << endl;
return 0;
}
I'm a beginner, I appreciate you guys in helping me.
FYI - If I print the string in C++ after receiving it looks like this
"{\"A\":true,\"B\":false,\"C\":false,\"D\":false}"
Thanks EVERYONE for your suggestions and I tried using json in C++ and made some changes
#include<iostream>
#include <jsoncpp/json/json.h>
using namespace std;
void decode()
{
bool a,b,c,d;
string text = "{\"A\":true,\"B\":false,\"C\":false,\"D\":false}";
Json::Value root;
Json::Reader reader;
bool parsingSuccessful = reader.parse( text, root );
if ( !parsingSuccessful )
{
cout << "Error parsing the string" << endl;
}
const Json::Value mynamesA = root["A"];
const Json::Value mynamesB = root["B"];
const Json::Value mynamesC = root["C"];
const Json::Value mynamesD= root["D"];
cout<<mynamesA<<endl;
cout<<mynamesB<<endl;
cout<<mynamesC<<endl;
cout<<mynamesD<<endl;
}
int main()
{
decode();
return 0;
}
Now its printing
true
false
false
false
as expected.
But I want to assign these values to bool a,b,c,d;
How can I do that ??
