{"id":37300,"date":"2025-05-15T10:51:09","date_gmt":"2025-05-15T02:51:09","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/37300.html"},"modified":"2025-05-15T10:51:09","modified_gmt":"2025-05-15T02:51:09","slug":"epoll%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%a2%e6%88%b7%e7%ab%af%e9%80%9a%e4%bf%a1","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/37300.html","title":{"rendered":"epoll\u670d\u52a1\u5668\u5ba2\u6237\u7aef\u901a\u4fe1"},"content":{"rendered":"

\u00a0 1 #include<stdio.h> \u00a0 2 #include<arpa\/inet.h> \u00a0 3 #include<bits\/types.h> \u00a0 4 #include<stdint.h> \u00a0 5 #include<sys\/types.h> \u00a0 6 #include<sys\/socket.h> \u00a0 7 #include<errno.h> \u00a0 8 #include<string.h> \u00a0 9 #include<stdlib.h> \u00a010 #include<unistd.h> \u00a011 #include <fcntl.h> \u00a012 #include <sys\/epoll.h> \u00a013 \/\/\u63a5\u53d7\u4fe1\u606f\u7ed3\u6784\u4f53 \u00a014 struct trr \u00a015 { \u00a016 \u00a0 \u00a0 int used; \u00a017 \u00a0 \u00a0 char data[4096]; \u00a018 }; \u00a019 int main(int argc, const char *argv[]) \u00a020 { \u00a021 \u00a0 \u00a0 char* p="0.0.0.0"; \u00a022 \u00a0 \u00a0 \/\/\u521b\u5efa\u670d\u52a1\u5668\u7684socket\u5957\u63a5\u5b57\u7b26 \u00a023 \u00a0 \u00a0 int sockfd=socket(AF_INET,SOCK_STREAM,0); \u00a024 \u00a0 \u00a0 if(-1==sockfd) \u00a025 \u00a0 \u00a0 { \u00a026 \u00a0 \u00a0 \u00a0 \u00a0 perror("socket"); \u00a027 \u00a0 \u00a0 \u00a0 \u00a0 return -1; \u00a028 \u00a0 \u00a0 } \u00a029\u00a0 \u00a030\u00a0 \u00a031 \u00a0 \u00a0 \/\/\u521d\u59cb\u5316\u4e86\u4e00\u4e2a\u88c5\u6709ip\u548cpot\u7684\u7ed3\u6784\u4f53 \u00a032 \u00a0 \u00a0 struct sockaddr_in add; \u00a033\u00a0 \u00a034\u00a0 \u00a035 \u00a0 \u00a0 \/\/\u8bbe\u5b9a\u4e3aipv4; \u00a036 \u00a0 \u00a0 add.sin_family=AF_INET; \u00a037\u00a0 \u00a038\u00a0 \u00a039 \u00a0 \u00a0 \/\/\u7aef\u53e3\u53f7in_port_t \u00a040 \u00a0 \u00a0 while(argc!=2) \u00a041 \u00a0 \u00a0 { \u00a042 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u8f93\u5165\u7aef\u53e3\u53f7\\\\n"); \u00a043 \u00a0 \u00a0 \u00a0 \u00a0 close(sockfd); \u00a044 \u00a0 \u00a0 \u00a0 \u00a0 return -1; \u00a045\u00a0 \u00a046 \u00a0 \u00a0 } \u00a047 \u00a0 \u00a0 short \u00a0port= atoi(argv[1]); \u00a048 \u00a0 \u00a0 add.sin_port=htons(port); \u00a049\u00a0 \u00a050\u00a0 \u00a051 \u00a0 \u00a0 \/\/ip \u00a052 \u00a0 \u00a0 if(inet_pton(AF_INET,p,&add.sin_addr)<=0) \u00a053 \u00a0 \u00a0 { \u00a054 \u00a0 \u00a0 \u00a0 \u00a0 perror("inet_pton"); \u00a055 \u00a0 \u00a0 \u00a0 \u00a0 close(sockfd); \u00a056 \u00a0 \u00a0 \u00a0 \u00a0 return -1; \u00a057 \u00a0 \u00a0 } \u00a058\u00a0 \u00a059\u00a0 \u00a060\u00a0 \u00a061 \u00a0 \u00a0 \/\/\u5c06\u88c5\u6709ip\u548cport\u7684\u7ed3\u6784\u4f53\u5199\u5165\u521b\u5efa\u7684\u5957\u63a5\u5b57\u6587\u4ef6 \u00a062 \u00a0 \u00a0 \/\/\u670d\u52a1\u5668\u7b5b\u9009\u63a5\u53d7\u4fe1\u606f\u7684ip\u548c\u7aef\u53e3\u53f7 \u00a063 \u00a0 \u00a0 if(-1==bind(sockfd,(struct sockaddr *)&add,sizeof(add))) \u00a064 \u00a0 \u00a0 { \u00a065 \u00a0 \u00a0 \u00a0 \u00a0 perror("bind"); \u00a066 \u00a0 \u00a0 } \u00a067\u00a0 \u00a068 \u00a0 \u00a0 \/\/ \u00a069 \u00a0 \u00a0 if(-1==listen(sockfd,10)) \u00a070 \u00a0 \u00a0 { \u00a071 \u00a0 \u00a0 \u00a0 \u00a0 perror("listen"); \u00a072 \u00a0 \u00a0 \u00a0 \u00a0 close(sockfd); \u00a073 \u00a0 \u00a0 \u00a0 \u00a0 return -1; \u00a074 \u00a0 \u00a0 } \u00a075\u00a0 \u00a076\u00a0 \u00a077\u00a0 \u00a078 \u00a0 \u00a0 printf("\u670d\u52a1\u5668\u5df2\u7ecf\u542f\u52a8，\u7b49\u5f85\u8fde\u63a5\u300b\u300b\u300b\\\\n"); \u00a079\u00a0 \u00a080 \u00a0 \u00a0 \/\/ \u521b\u5efaepoll\u6587\u4ef6\u5b9e\u4f8b \u00a081 \u00a0 \u00a0 int epfd; \u00a082 \u00a0 \u00a0 epfd = epoll_create1 ( EPOLL_CLOEXEC ); \u00a083 \u00a0 \u00a0 if( epfd == -1 ) \u00a084 \u00a0 \u00a0 { \u00a085 \u00a0 \u00a0 \u00a0 \u00a0 perror("epoll_create"); \u00a086 \u00a0 \u00a0 \u00a0 \u00a0 return -1; \u00a087 \u00a0 \u00a0 } \u00a088 \u00a0 \u00a0 \/\/ \u00a089 \u00a0 \u00a0 \/\/\u628a\u670d\u52a1\u5668\u7684sockfd\u6dfb\u52a0\u8fdbepoll\u6587\u4ef6 \u00a090\u00a0 \u00a091 \u00a0 \u00a0 struct epoll_event qwe; \u00a092 \u00a0 \u00a0 memset(&qwe,0,sizeof(qwe)); \u00a093 \u00a0 \u00a0 qwe.events = EPOLLIN; \u00a094 \u00a0 \u00a0 qwe.data.fd=sockfd; \u00a095 \u00a0 \u00a0 if( -1 == epoll_ctl(epfd,EPOLL_CTL_ADD,sockfd,&qwe)) \u00a096 \u00a0 \u00a0 { \u00a097 \u00a0 \u00a0 \u00a0 \u00a0 perror("epoll_ctl"); \u00a098 \u00a0 \u00a0 \u00a0 \u00a0 return -1; \u00a099 \u00a0 \u00a0 } 100\u00a0 101 \u00a0 \u00a0 \/\/\u5b9a\u4e49\u4e00\u4e2a\u6fc0\u6d3b\u6570\u7ec4 102 \u00a0 \u00a0 struct epoll_event ev[20]= {0}; 103\u00a0 104\u00a0 105\u00a0 106 \u00a0 \u00a0 \/* 107 \u00a0 \u00a0 \u00a0 \u00a0int flags = fcntl(client,F_GETFL);\u00a0 108 \u00a0 \u00a0 \u00a0 \u00a0flags = flags | O_NONBLOCK; 109 \u00a0 \u00a0 \u00a0 \u00a0fcntl(client,F_SETFL,flags);*\/ 110\u00a0 111 \u00a0 \u00a0 while(1) 112 \u00a0 \u00a0 { 113 \u00a0 \u00a0 \u00a0 \u00a0 memset(ev,0,sizeof(ev)); 114 \u00a0 \u00a0 \u00a0 \u00a0 \/\/\u628a\u6fc0\u6d3b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u7ed3\u6784\u4f53\u53d1\u5728ev\u91cc 115 \u00a0 \u00a0 \u00a0 \u00a0 int len = epoll_wait(epfd,ev,20,-1); 116 \u00a0 \u00a0 \u00a0 \u00a0 if(-1 == len ) 117 \u00a0 \u00a0 \u00a0 \u00a0 { 118 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 perror("wpoll_wait"); 119 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 continue; 120 \u00a0 \u00a0 \u00a0 \u00a0 } 121 \u00a0 \u00a0 \u00a0 \u00a0 for(int i = 0; i <= len-1 ; i++ ) 122 \u00a0 \u00a0 \u00a0 \u00a0 { 123 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 int temp = ev[i].data.fd; 124 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if( temp == sockfd ) 125 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 126\u00a0 127 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/client \u63a5\u53d7\u8fde\u63a5\u6210\u529f\u7684\u5ba2\u6237\u7aefip,port 128 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 struct sockaddr_in \u00a0client_addr={0}; 129 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 int len_client_addr = \u00a0sizeof(client_addr); 130\u00a0 131 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 int client =0; 132 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 client = \u00a0accept ( sockfd , (struct sockaddr *)&client_addr , &len_client_addr ); 133 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if(-1==client)\u00a0 134 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 135 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 perror("accept"); 136 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 137 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 char client_ip [16]=""; 138 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 inet_ntop(AF_INET,&client_addr.sin_addr,client_ip,16); 139 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u63a5\u6536\u5230\u7684ip ：%s\\\\n\u7aef\u53e3\u53f7 : %d\\\\n",client_ip,ntohs(client_addr.sin_port)); 140\u00a0 141\u00a0 142 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/\u628a\u65b0\u94fe\u63a5\u7684\u5ba2\u6237\u7aef\u5957\u63a5\u5b57\u63cf\u8ff0\u7b26\u6dfb\u52a0\u8fdbepfd 143 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 memset(&qwe,0,sizeof(qwe)); 144 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 qwe.events = EPOLLIN ; 145 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 qwe.data.fd= client; 146 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if( -1 == epoll_ctl(epfd,EPOLL_CTL_ADD,client,&qwe)) 147 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { \u00a0\u00a0 148 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 perror("epoll_ctl111"); \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 149 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 continue;\u00a0 150 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } \u00a0\u00a0 151\u00a0 152\u00a0 153 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 154 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 else 155 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 156\u00a0 157 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 char buf[64]=""; 158 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ssize_t rcv=read(temp,buf,63); 159 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if(-1==rcv) 160 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 161 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 perror("read"); 162 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 163 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 else if ( 0 == rcv ) 164 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 165 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u5ba2\u6237\u5173\u95ed\u4e86\u94fe\u63a5\\\\n"); 166 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if(-1== epoll_ctl( epfd , EPOLL_CTL_DEL, temp, NULL)) 167 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 168 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 perror("epoll_ctl_DEL"); 169 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 return -1; 170 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 171 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 continue; 172 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 173 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 else 174 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 175 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if(strcmp(buf,"exit")==0) 176 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 177 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u5ba2\u6237\u953b\u5173\u95ed\u4e86\u94fe\u63a5\\\\n"); 178 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if(-1== epoll_ctl( epfd , EPOLL_CTL_DEL, temp, NULL)) 179 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 180 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 perror("epoll_ctl_DEL"); 181 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 return -1; 182 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 183 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 continue; 184 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 185 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u63a5\u6536\u5230 %ld \u5b57\u8282\\\\n",strlen(buf)); 186 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u6536\u5230\u7684\u6d88\u606f\u662f \u00a0: %s\\\\n", buf); 187 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u662f\u5426\u5411\u5ba2\u6237\u7aef\u8fd4\u56de\u6536\u5230\u7684\u6d88\u606f\\\\n"); 188 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u662f：1\/\u5426：2\\\\n"); 189 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 char cmd; 190 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 while(1) 191 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 192 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 scanf("%c",&cmd); 193 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if(cmd == '1') 194 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 195 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/\u5411\u5ba2\u6237\u7aef\u8fd4\u56de\u6536\u5230\u7684\u4fe1\u606f 196 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 strcat(buf,"\u2014\u2014…\u2014\u2014"); 197 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ssize_t snd = send ( temp , buf , strlen(buf) , 0); 198 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if( -1 == snd ) 199 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 200 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 perror("send"); 201 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 break; 202 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 203 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 break; 204 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 205 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 else if(cmd == '2' ) 206 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 {\u00a0 207 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 char fnh='\\\\0'; 208 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ssize_t snd = send ( temp , &fnh , strlen(buf) , 0); 209 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if( -1 == snd ) 210 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 211 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 perror("send"); 212 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 break; 213 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 214 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 break; 215\u00a0 216 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 217 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 else 218 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 219 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 continue; 220 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 221 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 222 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 memset(buf,0,64); 223 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 224\u00a0 225 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 226 \u00a0 \u00a0 \u00a0 \u00a0 } 227\u00a0 228\u00a0 229 \u00a0 \u00a0 } 230 \u00a0 \u00a0 close(sockfd); 231\u00a0 232 \u00a0 \u00a0 return 0; 233 } \u00a0<\/p>\n<\/p>\n

\u00a0 1 #include<stdio.h> \u00a0 2 #include<arpa\/inet.h> \u00a0 3 #include<bits\/types.h> \u00a0 4 #include<stdint.h> \u00a0 5 #include<sys\/types.h> \u00a0 6 #include<sys\/socket.h> \u00a0 7 #include<errno.h> \u00a0 8 #include<string.h> \u00a0 9 #include<stdlib.h> \u00a010 #include<unistd.h> \u00a011 #include <sys\/epoll.h> \u00a012 \/\/\u4f20\u8f93\u7684\u4fe1\u606f\u7ed3\u6784\u4f53 \u00a013 struct trr \u00a014 { \u00a015 \u00a0 \u00a0 int used; \u00a016 \u00a0 \u00a0 char data[4096]; \u00a017 }; \u00a018 int main(int argc, const char *argv[]) \u00a019 { \u00a020 \u00a0 \u00a0 \/\/\u5199\u5165\u76ee\u6807\u670d\u52a1\u5668\u7684ip \u00a021 \u00a0 \u00a0 char* p="192.168.186.130"; \u00a022\u00a0 \u00a023\u00a0 \u00a024\u00a0 \u00a025 \u00a0 \u00a0 \/\/\u521b\u5efa\u5ba2\u6237\u7aef\u7684socket\u5957\u63a5\u5b57\u7b26 \u00a026 \u00a0 \u00a0 int client =socket(AF_INET,SOCK_STREAM,0); \u00a027 \u00a0 \u00a0 if(client==-1) \u00a028 \u00a0 \u00a0 { \u00a029 \u00a0 \u00a0 \u00a0 \u00a0 perror("socket"); \u00a030 \u00a0 \u00a0 \u00a0 \u00a0 return -1; \u00a031 \u00a0 \u00a0 } \u00a032\u00a0 \u00a033\u00a0 \u00a034\u00a0 \u00a035 \u00a0 \u00a0 \/\/\u5b9a\u4e49\u4e86\u4e00\u4e2a\u88c5\u6709ip\u548cpot\u7684\u7ed3\u6784\u4f53 \u00a036 \u00a0 \u00a0 struct sockaddr_in add; \u00a037\u00a0 \u00a038 \u00a0 \u00a0 \/\/\u8bbe\u5b9a\u4e3aipv4; \u00a039 \u00a0 \u00a0 add.sin_family=AF_INET; \u00a040 \u00a0 \u00a0 \/\/\u7aef\u53e3\u53f7in_port_t \u00a041 \u00a0 \u00a0 while(argc!=2){printf("\u8f93\u5165\u7aef\u53e3\u53f7\\\\n");close(client);return -1;} \u00a042 \u00a0 \u00a0 short \u00a0port= atoi(argv[1]); \u00a043 \u00a0 \u00a0 add.sin_port=htons(port); \u00a044\u00a0 \u00a045\u00a0 \u00a046\u00a0 \u00a047 \u00a0 \u00a0 \/\/ip \u00a048 \u00a0 \u00a0 if(0>inet_pton(AF_INET,p,&add.sin_addr)) \u00a049 \u00a0 \u00a0 { \u00a050 \u00a0 \u00a0 \u00a0 \u00a0 perror("inet_pton"); \u00a051 \u00a0 \u00a0 \u00a0 \u00a0 close(client); \u00a052 \u00a0 \u00a0 \u00a0 \u00a0 return -1; \u00a053 \u00a0 \u00a0 } \u00a054\u00a0 \u00a055 \u00a0 \u00a0 \/\/\u5c06\u672c\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u94fe\u63a5 \u00a056 \u00a0 \u00a0 if(-1==connect(client,(struct sockaddr*)&add,sizeof(add))) \u00a057 \u00a0 \u00a0 { \u00a058 \u00a0 \u00a0 \u00a0 \u00a0 perror("connect"); \u00a059 \u00a0 \u00a0 \u00a0 \u00a0 return -1; \u00a060 \u00a0 \u00a0 } \u00a061 \u00a0 \u00a0 \/\/\u521b\u5efaepoll\u6587\u4ef6\u5b9e\u4f8b \u00a062 \u00a0 \u00a0 int epfd; \u00a063 \u00a0 \u00a0 epfd = epoll_create1 ( EPOLL_CLOEXEC ); \u00a064 \u00a0 \u00a0 if( epfd == -1 ) \u00a065 \u00a0 \u00a0 { \u00a066 \u00a0 \u00a0 \u00a0 \u00a0 perror("epoll_create1"); \u00a067 \u00a0 \u00a0 \u00a0 \u00a0 return -1; \u00a068 \u00a0 \u00a0 } \u00a069 \u00a0 \u00a0 \/\/\u628a\u672c\u5ba2\u6237\u7aef\u7684sockfd(client)\u548c\u8f93\u5165\u884c\u7f13\u51b2\u533astdin\u52a0\u5165epoll\u5b9e\u4f8b \u00a070 \u00a0 \u00a0 struct epoll_event epoll_str; \u00a071 \u00a0 \u00a0 memset(&epoll_str,0,sizeof(epoll_str)); \u00a072 \u00a0 \u00a0 epoll_str.events = EPOLLIN; \u00a073 \u00a0 \u00a0 epoll_str.data.fd = client; \u00a074 \u00a0 \u00a0 if ( -1 == epoll_ctl(epfd,EPOLL_CTL_ADD,client,&epoll_str)) \u00a075 \u00a0 \u00a0 { \u00a076 \u00a0 \u00a0 \u00a0 \u00a0 perror("epoll_ctl-add"); \u00a077 \u00a0 \u00a0 \u00a0 \u00a0 return -1; \u00a078 \u00a0 \u00a0 } \u00a079 \u00a0 \u00a0 struct epoll_event epoll_stdin; \u00a080 \u00a0 \u00a0 memset(&epoll_stdin,0,sizeof(epoll_stdin)); \u00a081 \u00a0 \u00a0 epoll_str.events = EPOLLIN; \u00a082 \u00a0 \u00a0 epoll_str.data.fd = 0; \u00a083 \u00a0 \u00a0 if ( -1 == epoll_ctl(epfd,EPOLL_CTL_ADD,0,&epoll_stdin)) \u00a084 \u00a0 \u00a0 { \u00a085 \u00a0 \u00a0 \u00a0 \u00a0 perror("epoll_ctl-add"); \u00a086 \u00a0 \u00a0 \u00a0 \u00a0 return -1; \u00a087 \u00a0 \u00a0 } \u00a088 \u00a0 \u00a0 \/\/\u5b9a\u4e49\u4e00\u4e2a\u6fc0\u6d3b\u6570\u7ec4 \u00a089 \u00a0 \u00a0 struct epoll_event ev[2]; \u00a090\u00a0 \u00a091 \u00a0 \u00a0 while(1) \u00a092 \u00a0 \u00a0 { \u00a093 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u8f93\u5165\u4f20\u7ed9\u670d\u52a1\u5668\u7684\u4fe1\u606f\\\\n"); \u00a094 \u00a0 \u00a0 \u00a0 \u00a0 char buf[64]=""; \u00a095 \u00a0 \u00a0 \u00a0 \u00a0 scanf("%s",buf); \u00a096\u00a0 \u00a097 \u00a0 \u00a0 \u00a0 \u00a0 ssize_t aaa = send(client,buf,strlen(buf),0); \u00a098 \u00a0 \u00a0 \u00a0 \u00a0 if(-1==aaa) \u00a099 \u00a0 \u00a0 \u00a0 \u00a0 { 100 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 perror("read"); 101 \u00a0 \u00a0 \u00a0 \u00a0 } 102 \u00a0 \u00a0 \u00a0 \u00a0 else if ( 0 == aaa ) 103 \u00a0 \u00a0 \u00a0 \u00a0 { 104 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u5ba2\u6237\u5173\u95ed\u4e86\u94fe\u63a5\\\\n"); 105 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 break; 106 \u00a0 \u00a0 \u00a0 \u00a0 } 107 \u00a0 \u00a0 \u00a0 \u00a0 else 108 \u00a0 \u00a0 \u00a0 \u00a0 { 109 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if(strcmp(buf,"exit")==0) 110 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 111 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u5173\u95ed\u5ba2\u6237\u7aef\\\\n"); 112 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 break; 113 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 114 \u00a0 \u00a0 \u00a0 \u00a0 } 115\u00a0 116\u00a0 117\u00a0 118 \u00a0 \u00a0 \u00a0 \u00a0 memset(ev,0,sizeof(ev)); 119 \u00a0 \u00a0 \u00a0 \u00a0 int len = epoll_wait(epfd, ev, 2, -1); 120 \u00a0 \u00a0 \u00a0 \u00a0 if(-1 == len ) 121 \u00a0 \u00a0 \u00a0 \u00a0 { 122 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 perror("epoll_wait"); 123 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 continue; 124 \u00a0 \u00a0 \u00a0 \u00a0 } 125 \u00a0 \u00a0 \u00a0 \u00a0 for(int i = 0; i<len ;i++) 126 \u00a0 \u00a0 \u00a0 \u00a0 { \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 127\u00a0 128 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 struct epoll_event temp = ev[i]; 129 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if (temp.data.fd == client) 130\u00a0 131 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 132 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 memset(buf , 0 ,64); 133 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ssize_t rcv = recv( client , buf ,63 ,0); 134 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if(rcv ==-1) 135 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 136 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 perror("recv"); 137 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 continue; 138 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 139 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if(strlen(buf)==0) 140 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { 141 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u670d\u52a1\u5668\u672a\u8fd4\u56de\u4fe1\u606f\\\\n"); 142 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 break; 143 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 144 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 printf("\u6536\u5230\u670d\u52a1\u5668\u8fd4\u56de\u7684\u4fe1\u606f\\\\n"); 145 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 printf("%s\\\\n", buf ); 146 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } 147 \u00a0 \u00a0 \u00a0 \u00a0 } 148 \u00a0 \u00a0 } 149 \u00a0 \u00a0 return 0; 150 } \u00a0<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb852\u6b21\uff0c\u70b9\u8d5e16\u6b21\uff0c\u6536\u85cf13\u6b21\u3002139 printf("\u63a5\u6536\u5230\u7684ip \uff1a%s\\\\n\u7aef\u53e3\u53f7 : %d\\\\n",client_ip,ntohs(client_addr.sin_port));185 printf("\u63a5\u6536\u5230 %ld \u5b57\u8282\\\\n",strlen(buf));186 printf("\u6536\u5230\u7684\u6d88\u606f\u662f : %s\\\\n", buf);187 printf("\u662f\u5426\u5411\u5ba2\u6237\u7aef\u8fd4\u56de\u6536\u5230\u7684\u6d88\u606f\\\\n");<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[43,427,44],"topic":[],"class_list":["post-37300","post","type-post","status-publish","format-standard","hentry","category-server","tag-43","tag-427","tag-44"],"yoast_head":"\nepoll\u670d\u52a1\u5668\u5ba2\u6237\u7aef\u901a\u4fe1 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/37300.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"epoll\u670d\u52a1\u5668\u5ba2\u6237\u7aef\u901a\u4fe1 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb852\u6b21\uff0c\u70b9\u8d5e16\u6b21\uff0c\u6536\u85cf13\u6b21\u3002139 printf("\u63a5\u6536\u5230\u7684ip \uff1a%s\\n\u7aef\u53e3\u53f7 : %d\\n",client_ip,ntohs(client_addr.sin_port));185 printf("\u63a5\u6536\u5230 %ld \u5b57\u8282\\n",strlen(buf));186 printf("\u6536\u5230\u7684\u6d88\u606f\u662f : %s\\n", buf);187 printf("\u662f\u5426\u5411\u5ba2\u6237\u7aef\u8fd4\u56de\u6536\u5230\u7684\u6d88\u606f\\n");\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/37300.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-15T02:51:09+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/37300.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/37300.html\",\"name\":\"epoll\u670d\u52a1\u5668\u5ba2\u6237\u7aef\u901a\u4fe1 - 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