forums.ps2dev.org

[w.kosma]

hello,

i`m trying to modify psp controller sample,
i`m able to send udp packets and read them on the pc,
but when i try to call sceNetInetRecvfrom psp always freezes,

i would be very grateful if someone can have a look on this
piece of code, i`m sure i`m missung something obvious...
(or maybe there is sample for this somewhere?)

thanks,
wojciech




SOCKET sock = sceNetInetSocket(AF_INET, SOCK_DGRAM, 0);
if (sock & 0x80000000)
{
printf("Could not connect.");
return;
}

sockaddr_in addrTo;

addrTo.sin_family = AF_INET;
addrTo.sin_port = htons(g_serverPort);
addrTo.sin_addr[0] = g_serverAddr[0];
addrTo.sin_addr[1] = g_serverAddr[1];
addrTo.sin_addr[2] = g_serverAddr[2];
addrTo.sin_addr[3] = g_serverAddr[3];


sockaddr_in addrListen;

addrListen.sin_family = AF_INET;
addrListen.sin_port = htons(100); // port 100 - arbitrary
addrListen.sin_addr[0] = 10;
addrListen.sin_addr[1] = 0;
addrListen.sin_addr[2] = 2;
addrListen.sin_addr[3] = 1;


while(done!=1){



char buffer[128];

sockaddr_in addrFrom;
int cbAddrFrom = sizeof(addrFrom);

sceNetInetRecvfrom(sock, (u8*)buffer, sizeof(buffer), 0, &addrFrom, &cbAddrFrom);

unsigned char packet[8];

sceNetInetSendto( sock, packet, sizeof( packet ), 0, &addrTo, sizeof(addrTo) );


}

[danzel]

sceNetInetRecvfrom (or recvfrom in standard unix sockets) is a blocking call, it blocks untill it receives a packet.
I guess that this is what is happening.

If you don't want it to block, then investigate using select (http://www.lowtek.com/sockets/select.html) or making it nonblocking and polling it manually.

I also recommend you use the standard unix sockets functionality that is available in the sdk rather than the sceNetInet functions.

[w.kosma]

thanks,

i get some connection errors,
is there any sample for dealing with unix sockets?(couldn`t find in the docs)

i`ll be very grateful
btw, i`m on mac os x

wojciech

[danzel]

Fairly good one for tcp:
http://www.cs.rpi.edu/courses/sysprog/sockets/sock.html

Can't really find one for udp, but feel free to post when you get stuck.

Danzel.

[sandberg]

This my a simple tool I wrote for use with PSPRadio and the WiFi logging stuff. It's intended to run in a Linux shell, but should work on all bsd socket compatible platforms.

[Sirwhizz]

Well I looked at your code. I have to mention that you need to open two sockets. One for sending and one for receiving. Here is my code.

[sandberg]

There is no need to open two sockets ? You can send and receive using the same socket. The addition to my original code above works fine using only one socket.