sock = socket(AF_INET, SOCK_RAW,1);/* 1 == ICMP */if(sock <0) {if(errno != EPERM) bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);#ifdefined(__linux__) || defined(__APPLE__)/* We don't have root privileges. Try SOCK_DGRAM instead. * Linux needs net.ipv4.pi...
ifr.ifr_data = (char *) &edata; if (( skfd = socket( AF_INET, SOCK_DGRAM, 0 )) < 0) return -1; if(ioctl( skfd, SIOCETHTOOL, &ifr ) == -1) { close(skfd); return -1; } close(skfd); return edata.data; } --- # ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00...
FD_ZERO(&rd_set);FD_SET((unsigned)sock, &rd_set);constunsignednumFds = sock+1;structtimevaltimeout;timeout.tv_sec =5; timeout.tv_usec =0;intresult = select(numFds, &rd_set,NULL,NULL, &timeout);if(result <=0)break;unsignedcharreadBuffer[20];intbytesRead = readSocket(env, sock...
我的C++应用程序创建了64-128个UDP套接字。int sock = socket(AF_INET, SOCK_DGRAM, 0);int result = setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes));if(resul 浏览2提问于2021-09-22得票数0 回答已采纳 1回答 函数来查找管道的最大数量。
April 29, 2020 11:18 395 396 if (stress_sighandler(args->name, SIGPIPE, stress_sock_sigpipe_handler, NULL) < 0) 397 return EXIT_NO_RESOURCE; 398 399 if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { Replace pr_fail_err with pr_fail to allow more flexible error ...
sin.sin_port=htons(PORT);if((sockfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) <0) { perror("fail to create socket.\n"); exit(1); } addr_len=sizeof(cin);while(1) { timeout.tv_usec=0; timeout.tv_sec=interval; FD_ZERO(&fds); ...
Linux Socket主要分为以下几种类型: 流式Socket (SOCK_STREAM):提供可靠的、面向连接的通信流,通常基于TCP协议。 数据报Socket (SOCK_DGRAM):提供无连接的数据报服务,通常基于UDP协议。 原始Socket (SOCK_RAW):允许访问底层协议,如IP或ICMP。 应用场景
gougou1682楼•1 小时前
socket(AF_INET, SOCK_DGRAM, IPPROTO_IP) = 3 connect(3, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("...")}, 16) = 0 sendto(3, ..., 29, MSG_NOSIGNAL, NULL, 0) = 29 read_fd_set=1 write_fd_set=0 maxfd=3 recvfrom(3, ..., 4097, 0, {sa_family=...
是微秒 fd_set rdfds; FD_ZERO(&rdfds); // 描述集初始化 int iSock = 0; for(unsigned int i = 0; i < n; i++) { iSock = socket(AF_INET, SOCK_DGRAM, 0); // 让句柄泄漏 printf("iSock is %d\n", iSock); } if(iSock >= 0) { iSock = socket(AF_INET, SOCK_DGRAM, 0...