network arplab finished

network/start/lib/npcap/Examples-remote/misc/sendpack.c

@@ -0,0 +1,72 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <pcap.h>
+#include "misc.h"
+
+
+void main(int argc, char **argv)
+{
+pcap_t *fp;
+char errbuf[PCAP_ERRBUF_SIZE];
+u_char packet[100];
+int i;
+
+    /* Load Npcap and its functions. */
+    if (!LoadNpcapDlls())
+    {
+        fprintf(stderr, "Couldn't load Npcap\n");
+        exit(1);
+    }
+
+	/* Check the validity of the command line */
+	if (argc != 2)
+	{
+		printf("usage: %s interface (e.g. 'rpcap://eth0')", argv[0]);
+		return;
+	}
+    
+	/* Open the output device */
+	if ( (fp= pcap_open(argv[1],			// name of the device
+						100,				// portion of the packet to capture (only the first 100 bytes)
+						PCAP_OPENFLAG_PROMISCUOUS, 	// promiscuous mode
+						1000,				// read timeout
+						NULL,				// authentication on the remote machine
+						errbuf				// error buffer
+						) ) == NULL)
+	{
+		fprintf(stderr,"\nUnable to open the adapter. %s is not supported by Npcap\n", argv[1]);
+		return;
+	}
+
+	/* Supposing to be on ethernet, set mac destination to 1:1:1:1:1:1 */
+	packet[0]=1;
+	packet[1]=1;
+	packet[2]=1;
+	packet[3]=1;
+	packet[4]=1;
+	packet[5]=1;
+	
+	/* set mac source to 2:2:2:2:2:2 */
+	packet[6]=2;
+	packet[7]=2;
+	packet[8]=2;
+	packet[9]=2;
+	packet[10]=2;
+	packet[11]=2;
+	
+	/* Fill the rest of the packet */
+	for(i=12;i<100;i++)
+	{
+		packet[i]=(u_char)i;
+	}
+
+	/* Send down the packet */
+	if (pcap_sendpacket(fp, packet, 100 /* size */) != 0)
+	{
+		fprintf(stderr,"\nError sending the packet: %s\n", pcap_geterr(fp));
+		return;
+	}
+
+	return;
+}