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#include <sys/types.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include "net.h"
void* net_recv(int sock, msg_type_t wanted)
{
void* result = NULL;
uint8_t peekbuf[2], type, payload_len, *packet, *payload;
ssize_t len = recv(sock, peekbuf, 2, MSG_PEEK); // just peek into packet to determine type
assert(len != -1);
type = peekbuf[NET_MSG_OFFSET_TYPE];
payload_len = peekbuf[NET_MSG_OFFSET_PAYLOAD_LENGTH];
if(type != wanted)
{
printf("client_recv: received type %d instead of %d", type, wanted);
return NULL;
}
packet = malloc(payload_len+NET_MSG_OFFSET_PAYLOAD);
recv(sock, packet, payload_len+NET_MSG_OFFSET_PAYLOAD, 0);
payload = &packet[NET_MSG_OFFSET_PAYLOAD];
switch(type)
{
case msg_type_hello:
result = server_recv_hello(payload, payload_len);
break;
case msg_type_start_game:
result = client_recv_player_list(payload, payload_len);
break;
case msg_type_deal_cards:
result = client_recv_deal_cards(payload, payload_len);
break;
}
free(packet);
return result;
}
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