网络应用程序大作业代码（MyBrowser，MyServer，MyManager）

#include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <netinet/in.h> #include <errno.h> #include <signal.h> #include <string.h> #include <fcntl.h> #include <sys/ipc.h> #include <sys/shm.h> #include <unistd.h> int main(int argc ,char* argv[]) { int i,get[100]; //server共享内存 key_t s_key; if((s_key=ftok("server_shm",0))==-1) { printf("Create Key Error.\n"); exit(1); } int s_shmid=shmget(s_key,5*sizeof(int),IPC_CREAT); if(s_shmid==-1) { printf("Create Share Memory Error-s.\n"); exit(1); } int *curr=shmat(s_shmid,0,0); int *disp=shmat(s_shmid,0,0)+sizeof(int); int *succ=shmat(s_shmid,0,0)+2*sizeof(int); int *fail=shmat(s_shmid,0,0)+3*sizeof(int); int *server=shmat(s_shmid,0,0)+4*sizeof(int); *curr=*disp=*succ=*fail=0; *server=-1; //client共享内存 key_t b_key; if((b_key=ftok("client_shm",0))==-1) { printf("Create Key Error.\n"); exit(1); } int b_shmid=shmget(b_key,200*sizeof(long),IPC_CREAT); if(b_shmid==-1) { printf("Create Share Memory Error-c.\n"); exit(1); } long *b_stat=shmat(b_shmid,0,0); long *numofclient=shmat(b_shmid,0,0)+200*sizeof(long); *numofclient=0; for(i=0;i<50;i++) b_stat[2*i]=b_stat[2*i+1]=-1; for(i=50;i<100;i++) b_stat[2*i]=b_stat[2*i+1]=-1; char ctl; for(;;) { printf("\n------------------------------------------------------------------------\n"); printf("C - Create Server\nB - Create Browser\nK - Kill Server\nS - Check Stat.\nQ - Quit Manager\n"); printf("\nPlease Choose Operation:"); scanf("%c",&ctl); switch(ctl) { case 'c': case 'C': { if(*server!=-1) printf("Server have already Existed.\n"); else if(fork()==0)//子进程 { execlp("gnome-terminal","gnome-terminal","-x","Server", NULL); printf("Server Started Error.\n"); exit(1); } else//父进程 ; break; } case 'b': case 'B': { if(*server==-1) { printf("Server Do Not Exist . Request Invalid . Start Server First.\n"); break; } int tocreate; printf("Please Input the Number of Process You Wanna Create [1-%d] :",100-*numofclient); scanf("%d",&tocreate); if(tocreate>100-*numofclient||tocreate<0) printf("Input Out Of Bounds!\n"); else { i=0; int number=*numofclient; for(i=number;i<tocreate+number;i++) { char p[100]; memset(p,'\0',10); char t[100]; memset(t,'\0',10); printf("请输入第%d个要请求的页面:",i+1); scanf("%s",p); printf("请输入第%d个文件的保存名:",i+1); scanf("%s",t); if((fork())==0)//子进程 { execlp("gnome-terminal","gnome-terminal","-x","Client",p,t,NULL); printf("Server Started Error.\n"); exit(1); } else//父进程 wait(NULL); } } break; } case 'k'://Kill Process case 'K': { if(*server==-1) printf("Server Do Not Exist.\n"); else { kill(*server,SIGKILL); printf("Server have been Killed.\n"); *server=-1; } break; } case 's'://Check Stat. case 'S': { int num=0; int sum=0; if(*server==-1) printf("Server DO Not Exist.\n"); printf("Server Stat:\n"); printf("Current Connect:%d\tDisposed Connect:%d\nSuccess Connect:%d\tFailed Connect:%d\n",*curr,*disp,*succ,*fail); //when browser was created, numofclient++ if(*numofclient<=0) printf("Browser Do Not Exist.\n"); else { sleep(1); for(i=0;i<100;i++) { if(b_stat[2*i]>0) { printf("%ld\t",b_stat[2*i]); if(b_stat[2*i+1]>=0) { num++; sum+=b_stat[2*i+1]; } } } sleep(2); if(num==0) printf("\nNo Transmisson Done.\n"); else printf("\nAverage Time:%ld.\n",sum/num); } break; } case 'q': case 'Q': { if(*server!=-1) kill(*server,SIGKILL); return 0; } default: break; } } return 0; }