socket编程实例(文件传输).doc

#include #include #include #include #include #include #include #include #include #include #define FU_SERVER_PORT 8080 /*set port*/#define FU_BUFFERSIZE 1024 /*set buffer size*/#define FU_LISTENQ 10 /*set listen max conncent*/int main(int argc,char *argv)int fu_listenfd,fu_connfd,fu_filefd; /*descriptor*/int fu_read,fu_write;int struct_size;struct sockaddr_in fu_servaddr,fu_cliaddr;char *fu_filename;char *p;char bufferFU_BUFFERSIZE;fu_listenfd=socket(AF_INET,SOCK_STREAM,0); /*create socket*/if(fu_listenfd=-1) perror(fu_socket); exit(1);memset(&fu_servaddr,0,sizeof(fu_servaddr); /*servaddr set 0*/fu_servaddr.sin_family=AF_INET; /*init serveraddr*/fu_servaddr.sin_addr.s_addr=INADDR_ANY;fu_servaddr.sin_port=htons(FU_SERVER_PORT);/*bind fu_listenfd*/if(-1=(bind(fu_listenfd,(struct sockaddr *)&fu_servaddr, sizeof(fu_servaddr) perror(fu_bind); exit(1);/*listen fu_listenfd*/if(-1=(listen(fu_listenfd,FU_LISTENQ) perror(fu_listen); exit(1);/*file upload server start*/while(1) printf(file upload server starting.n); memset(&fu_cliaddr,0,sizeof(fu_cliaddr); struct_size=sizeof(fu_cliaddr); fu_connfd=accept(fu_listenfd,(struct sockaddr *)&fu_cliaddr,&struct_size); if(-1=fu_connfd) perror(fu_accpet); continue; fu_filename=/root/backup.txt; printf(will upload file name is:%sn,fu_filename); fu_filefd=open(fu_filename,O_RDWR|O_CREAT|O_TRUNC,S_IRWXU); if (fu_filefd0) perror(open localhost file); continue; while(fu_read=read(fu_connfd,buffer,FU_BUFFERSIZE) if (fu_read 0) perror(read client file); break; if (-1=write(fu_filefd,buffer,fu_read) perror(writing to filefd error); break; if(-1=fu_read|-1=fu_write) continue; close(fu_filefd); close(fu_connfd); printf(file upload success!n);close(fu_listenfd);return 0;#include #include #include #include ar#include #include #include #include #include #include #define FU_SERVER_PORT 8080 /*set port*/#define FU_BUFFERSIZE 1024 /*set buffer size*/int main(int argc,char *argv)int fu_sockfd,fu_filefd; /*descriptor*/int fu_read,fu_write;int struct_size;struct sockaddr_in fu_sockaddr;char *fu_filename;char *p;char bufferFU_BUFFERSIZE;if (argc!=2) perror(fu_Usage: n); exit(1);fu_sockfd=socket(AF_INET,SOCK_STREAM,0); /*create socket*/if(fu_sockfd=-1) perror(fu_socket); exit(1);memset(&fu_sockaddr,0,sizeof(fu_sockaddr); /*servaddr set 0*/fu_sockaddr.sin_family=AF_INET; /*init serveraddr*/inet_aton(argv1,&fu_sockaddr.sin_addr);fu_sockaddr.sin_port=htons(FU_SERVER_PORT);if(-1=(connect(fu_sockfd,(struct sockaddr *)&fu_sockaddr,sizeof(fu_sockaddr) perror(fu_connect); exit(1);printf(start connecting.n);fu_filename=./will.txt;printf(will upload file name is:%sn,fu_filename);fu_filefd=open(fu_filename,O_RDONLY);if(-1=fu_filefd) perror(open will upload file); exit(1);while(fu_read=read(fu_filefd,buffer,FU_BUFFERSIZE) if(-1=fu_read) perror(read will upload file); exit(1); p=buffer; while(fu_write=write(fu_sockfd,p,fu_read) if(-1=fu_write) perror(write client file); break; else if(fu_read=fu_wri