socket between java client and c++ server

[happyvalley]

Hi,
don't know if it is the place to ask this question

I have a c++ server and a java client communicate via socket

in Java client
// create a client socket
Socket clientSocket = new Socket("localho st", 27015);
PrintWriter out = new PrintWriter(cli entSocket.getOu tputStream(),
true);

String userInput = "amsg";
System.out.prin tln("send to server:" + userInput.lengt h() + " :" +
userInput);
out.println(use rInput);

in c++ server
// code to starup the connection
int recvbuflen = 255;
char recvbuf[255];
int iResult = recv(ClientSock et, recvbuf, recvbuflen, 0);
cout<<"iResult = "<<iResult<<end l;


the msg sendout in java client "amsg" is 4, while, in the c++ server,
it says the msg length = 6.
it always +2.
when I send the msg from a java client to a java server via socket,
there is no such problem

any suggestion. thanks

[andrewmcdonagh]

Re: socket between java client and c++ server



On Dec 14, 10:57 pm, "happyvalle y" <nittanymount.. .@gmail.comwrot e:

Hi,
don't know if it is the place to ask this question
>
I have a c++ server and a java client communicate via socket
>
in Java client
// create a client socket
Socket clientSocket = new Socket("localho st", 27015);
PrintWriter out = new PrintWriter(cli entSocket.getOu tputStream(),
true);
>
String userInput = "amsg";
System.out.prin tln("send to server:" + userInput.lengt h() + " :" +
userInput);
out.println(use rInput);
>
in c++ server
// code to starup the connection
int recvbuflen = 255;
char recvbuf[255];
int iResult = recv(ClientSock et, recvbuf, recvbuflen, 0);
cout<<"iResult = "<<iResult<<end l;
>
the msg sendout in java client "amsg" is 4, while, in the c++ server,
it says the msg length = 6.
it always +2.
when I send the msg from a java client to a java server via socket,
there is no such problem
>
any suggestion. thanks

Its sending the \eol \cr chars as well... (or in Java's speak '\n'
- because you used out.println(... ) instead of out.print() )

[happyvalley]

Re: socket between java client and c++ server


andrewmcdonagh wrote:

On Dec 14, 10:57 pm, "happyvalle y" <nittanymount.. .@gmail.comwrot e:

Hi,
don't know if it is the place to ask this question

I have a c++ server and a java client communicate via socket

in Java client
// create a client socket
Socket clientSocket = new Socket("localho st", 27015);
PrintWriter out = new PrintWriter(cli entSocket.getOu tputStream(),
true);

String userInput = "amsg";
System.out.prin tln("send to server:" + userInput.lengt h() + " :" +
userInput);
out.println(use rInput);

in c++ server
// code to starup the connection
int recvbuflen = 255;
char recvbuf[255];
int iResult = recv(ClientSock et, recvbuf, recvbuflen, 0);
cout<<"iResult = "<<iResult<<end l;

the msg sendout in java client "amsg" is 4, while, in the c++ server,
it says the msg length = 6.
it always +2.
when I send the msg from a java client to a java server via socket,
there is no such problem

any suggestion. thanks

>
Its sending the \eol \cr chars as well... (or in Java's speak '\n'
- because you used out.println(... ) instead of out.print() )

thanks a lot, seems print() doesnot work, should be write()