使用TCP_INFO选项时,可以通过检查tcpi_state字段的值来判断连接状态,如TCP_ESTABLISHED表示连接已建立。 处理可能出现的异常或错误情况: 在调用getsockopt函数时,应检查其返回值以确保操作成功。如果getsockopt返回-1,则表示发生了错误,此时应使用perror或strerror等函数打印错误信息。 在进行网络编程时,还应考虑其他可能...
: sysctl_tcp_keepalive_intvl; } static inline int keepalive_probes(const struct tcp_sock *tp) { return tp->keepalive_probes ? : sysctl_tcp_keepalive_probes; } TCP_INFO /* Return information about state of tcp endpoint in API format. */ void tcp_get_info(struct sock *sk, struct tcp...
1. struct tcp_info是个什么结构体 2. getsockopt这个函数的功能是什么 下面一一作答: 这个结构体里面包含的东西就多了, 1structtcp_info {2__u8 tcpi_state;//tcp state: TCP_SYN_SENT,TCP_SYN_RECV,TCP_FIN_WAIT1,TCP_CLOSE etc3__u8 tcpi_ca_state;//congestion state:4__u8 tcpi_retransmits;...
SO_PROTOCOL_INFOWSAPROTOCOL_INFO系結至此套接字之通訊協議的通訊協議資訊描述。 SO_RCVBUFint保留給接收的個別套接字緩衝區空間總計。 這與SO_MAX_MSG_SIZE無關,而且不一定對應至 TCP 接收視窗的大小。 SO_REUSEADDRBOOL套接字可以系結至已在使用的位址。 不適用於 ATM 套接字。
sockfd:一个标识套接口的描述字。 level:选项定义的层次。例如,支持的层次有SOL_SOCKET、IPPROTO_TCP等。 optname:需获取的套接口选项。 optval:指针,指向存放所获得选项值的缓冲区。 optlen:指针,指向optval缓冲区的长度值。 */ level级别:SOL_SOCKET
An application can request that a TCP/IP service provider enable the use of keep-alive packets on TCP connections by turning on the SO_KEEPALIVE socket option. A Windows Sockets provider need not support the use of keep-alive. If it does, the precise semantics are implementation-specific but...
Failed to request cluster info, will try again: [Get https://x.x.x.x:x/api/v1/namespaces/kube-public/configmaps/cluster-info: dial tcp 192.168.8.192:6443: getsockopt: connection refused]问题补充: 请问如何解决? Sharpest | 初学一级 | 园豆:102 提问于:2018-02-03 11:21 ...
TCP_NODELAY BOOL Disables the Nagle algorithm for send coalescing. BSD options not supported for getsockopt are: Value Type Meaning SO_RCVLOWAT int Receive low water mark SO_RCVTIMEO int Receive time-out SO_SNDLOWAT int Send low water mark SO_SNDTIMEO int Send time-out TCP_MAXSEG ...
TCP_ESTABLISHED = 1, TCP_SYN_SENT, TCP_SYN_RECV, TCP_FIN_WAIT1, TCP_FIN_WAIT2, TCP_TIME_WAIT, TCP_CLOSE, TCP_CLOSE_WAIT, TCP_LAST_ACK, TCP_LISTEN, TCP_CLOSING, TCP_NEW_SYN_RECV, TCP_BOUND_INACTIVE, }; /* values for tcp_info.tcpi_ca_state */ enum tcp_ca_state { TCP_CA...
[discovery] Created cluster-info discovery client, requesting info from "https://10.0.2.15:6443" [discovery] Failed to request cluster info, will try again: [Get https://10.0.2.15:6443/api/v1/namespaces/kube-public/configmaps/cluster-info: dial tcp 10.0.2.15:6443: getsockopt: connection ...