RIP路由算法通信实例.doc

RIP路由算法通信实例 //MY_RIP_TextA.cpp #include stdio.h #include stdlib.h #include winsock2.h #pragma comment(lib, ws2_32.lib) #define SEND_LENGTH 5000 #define RECV_LENGTH 5000 #define A 4 #define B 6 typedef struct route_info{ int intent_net; int distance; int next_route; struct route_info* next; }ROUTE_INFO; int menu(); void init_route(ROUTE_INFO* head); int update_route(ROUTE_INFO* head); void select_route(ROUTE_INFO* head); void free_linked_list(ROUTE_INFO* head); void route_to_char(ROUTE_INFO* head,char route_infor[]); void char_to_route(ROUTE_INFO* head,char route_infor[]); void RIP_algorithm(ROUTE_INFO* head,ROUTE_INFO* recv); void main() { int menu_value; ROUTE_INFO* head; head = (ROUTE_INFO*)malloc(sizeof(ROUTE_INFO)); head-next_route=A; head-next=NULL; while(1) { menu_value = menu(); switch(menu_value) { case 1: init_route(head); break; case 2: update_route(head); break; case 3: select_route(head); break; case 4: exit(0); break; default: printf(输入菜单选项有误,请重新输入.); break; } } free_linked_list(head); } int menu() { int i=0; printf(***************路由器R4***************\n); printf(** 1.录入初始路有路由信息。 **\n); printf(** 2.更新路由信息。 **\n); printf(** 3.查询路由信息。 **\n); printf(** 4.exit。 **\n); printf(**************************************\n); scanf(%d,i); return i; } void init_route(ROUTE_INFO* head) { ROUTE_INFO* route_info; ROUTE_INFO* p=head; char c; while(1) { route_info = (ROUTE_INFO*)malloc(sizeof(ROUTE_INFO)); p-next=route_info; p=p-next; p-next=NULL; printf(请输入目的网络、距离、下一跳路由器：); scanf(%d,p-intent_net); scanf(%d,p-distance); scanf(%d,p-next_route); scanf(%c,c); printf(是否继续y/n:); scanf(%c,c); if(c==y||c==Y); else if(c==n||c==N) break; /* printf(%d ,p-intent_net); printf(%d ,p-distance); printf(%d \n,p-next_route);*/ } } int update_route(ROUTE_INFO* head) { WORD socketVersi