-
-#include <stdio.h>
-#include <unistd.h>
-#include <arpa/inet.h>
-
-#include <protocol.h>
-#include <attr.h>
-
-
-int main (void)
-{
- char buffer[1500];
- struct ng_packet np;
- int err = 0, s, len;
- struct sockaddr_in local, remote;
- socklen_t slen = sizeof(struct sockaddr_in);
- unsigned char error;
- unsigned short attr_error;
- List *attr;
- ListNode *ln;
- struct attr *at;
-
-
- s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
- if (s < 0) {
- perror("socket");
- err = 1;
- goto end;
- };
-
-
- memset(&local, 0, sizeof(struct sockaddr_in));
- local.sin_family = AF_INET;
- local.sin_addr.s_addr = htonl(INADDR_ANY);
- local.sin_port = htons(SWITCH_PORT);
-
- if (bind(s, (struct sockaddr*)&local, sizeof(struct sockaddr_in)) < 0) {
- perror("bind");
- err = 2;
- goto end;
- }
-
- while (1) {
-
- len = recvfrom(s, buffer, sizeof(buffer), 0, (struct sockaddr*)&remote, &slen);
- if (len < 0) {
- perror("recvfrom");
- err = 3;
- goto end;
- }
-
- printf("---------------------------------\n");
-
- np.buffer = buffer;
- np.maxlen = len;
- initNgPacket(&np);
-
- attr = createEmptyList();
-
- if (ntohs(remote.sin_port) != CLIENT_PORT ||
- len < (int)sizeof(struct ng_header) ||
- !validateNgHeader(np.nh, 0, NULL, NULL, 0) ||
- extractPacketAttributes(&np, attr, 0) < 0) {
- printf("wrong packet\n");
- goto end;
- }
-
- printf("received %d attribute(s)\n", attr->count);
-
- for (ln = attr->first; ln != NULL; ln = ln->next) {
- at = ln->data;
- printf("received attribute code = %04X, length = %d\n", at->attr, at->size);
- }
-
- destroyList(attr, (void(*)(void*))freeAttr);
-
- printf("---------------------------------\n\n");
- }
-
- close(s);
-
-end:
- return err;
-}
-