[ENet-discuss] Broadcast Messages through the LAN - Trying an implementation

[David Orejuela]

I have tried to implement the solution you provided me, but there are some
problems sending data and I have some questions about it:

--------

SERVER:

--------

Server socket creation doesn't return errors, but I'm not sure if I'm doing
things right

--- Socket creation---

mySocket = socket(AF_INET, SOCK_RAW, VT_UDP_SOCK);

//SOCK_RAW for raw UDP traffic?

---SetSockOpt---

int reuseAddrOp = 1;

setsockopt(mySocket,SOL_SOCKET/*IPPROTO_UDP*/,SO_REUSEADDR,&reuseAddrOp,sizeof(reuseAddrOp))

//must I change option for IPPROTO_UDP or SOL_SOCKET?

---Bind---

sockaddr_in inAddress;

inAddress.sin_family = AF_INET;

inAddress.sin_port = htons(DEFAULT_PORT); //#define DEFAULT_PORT 1001

inAddress.sin_addr.s_addr = htonl(INADDR_ANY);

//is INADDR_ANY address right?

bind(mySocket,&inAddress,sizeof(inAddress));

---Listening thread---

...

do

{

FindServerRequestMessage fsr_msg;

//the sockaddr_in parameter is right? I want to listen any address...

int result = recvfrom(mySocket,&fsr_msg, sizeof(fsr_msg), 0, &inAddress,
sizeof(inAddress));

if(result > 0)

{

//Get fsr_msg data and answer

}

}

while(1);

 --------

CLIENT

--------

The client sends a FindServersRequest message through the socket.

When I try to send data with the "sendto" function returns me a -1, but I
don't know why...

---Socket creation---

Like the server

---SetSockOpt---

Like the server

---Bind---

Like the server

---Delivery---

sockaddr_in outAddress;

outAddress.sin_family = AF_INET;

outAddress.sin_port = htons(1001);

outAddress.sin_addr.s_addr = htonl(ENET_HOST_BROADCAST); // BROADCAST
sending, is it ok?

sendto(mySocket,&fsr_msg, sizeof(fsr_msg),0,&outAddress,sizeof(outAddress));
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