Basic reading in a few packets and checking contents

tests/test.odin

@@ -33,3 +33,47 @@ basic_find_devs :: proc(t: ^_t.T) {
 
 	pcap.freealldevs(interfaces)
 }
+
+@(test)
+basic_capture :: proc(t: ^_t.T) {
+	errbuf: [pcap.PCAP_ERRBUF_SIZE]byte
+	interfaces: ^pcap.pcap_if_t
+	header: ^pcap.pcap_pkthdr
+	packet: [^]byte
+
+
+	err := pcap.findalldevs(&interfaces, &errbuf[0])
+	if err == pcap.PCAP_ERROR {
+		fmt.println(
+			"Error while finding all devs: ",
+			strings.string_from_ptr(&errbuf[0], len(errbuf)),
+		)
+	}
+
+	handler := pcap.open_live(interfaces.name, 512, true, 1000, &errbuf[0])
+
+	PCAP_OKAY :: 1
+	for i := 0; i < 5; i += 1 {
+		err := pcap.next_ex(handler, &header, &packet)
+		if err == PCAP_OKAY {
+			fmt.println("TS: ", header.ts)
+			fmt.println("Cap Len: ", header.caplen)
+			fmt.println("Len: ", header.len)
+			plen: u32 = 64
+			if header.caplen < plen do plen = header.caplen
+			for j: u32 = 0; j < plen; j += 1 {
+				if (j % 16 == 0 && j != 0) {
+					fmt.printf("%2X \n", packet[j])
+				} else if (j % 8 == 0 && j != 0) {
+					fmt.printf("%2X  ", packet[j])
+				} else {
+					fmt.printf("%2X ", packet[j])
+				}
+			}
+			fmt.println()
+		}
+	}
+
+	pcap.freealldevs(interfaces)
+	pcap.close(handler)
+}