IPPROTO_TCP, TCP_SYNCNT, (void *)&syncnt , sizeof(syncnt )); int maxseg = 1460; // 设置TCP数据包的最大大小为1460字节 setsockopt(sock_fd, IPPROTO_TCP, TCP_MAXSEG, (void *)&maxseg , sizeof(maxseg )); int clamped = 1; // 限制TCP窗口大小 setsockopt(sock_fd, IPPROTO_TCP, TCP_WIND...
A.TCP_MAXSEG B.TCP_NODELAY C.TCP_SYNCNT D.TCP_KEEPALIVE Nagle算法主要是用来避免大量的小数据包在网络中传输,从而降低网络容量利用率。 但是对于一些需要小包场景的程序,比如像telnet或ssh这样的交互性比较强的程序,需要关闭这个算法。可以在Socket设置TCP_NODELAY选项来关闭这个算法 错题14 下列不是Linux系统进程...
该参数在支持TCP_SYNCNT套接字选项的操作系统上,指定客户端建立连接三次握手阶段SYN包发送失败而重传的次数。0值表示使用系统缺省。通过Unix域套接字的连接忽略这个参数。 TcpSYNRetries=3 TextAsLongVarchar 若TextAsLongVarchar=1,则将内核侧text类型映射为驱动侧的SQL_LONGVARCHAR类型;TextAsLongVarchar=0,则将...
30. 在linux编程中,以下哪个TCP的套接字选项与nagle算法的开启和关闭有关? A TCP_MAXSEG B TCP_NODELAY C TCP_SYNCNT D TCP_KEEPALIVE 答案如下: 1. A 2. C 3. C 4. A 5. D 6. A 7. D 8. A 9. B 10. B 11. A 12. C 13. D 14. C 15. A 16. B 17. D 18. A 19. C 20...
A TCP_MAXSEG B TCP_NODELAY C TCP_SYNCNT D TCP_KEEPALIVE 答案如下: 1. A 2. C 3. C 4. A 5. D 6. A 7. D 8. A 9. B 10. B 11. A 12. C 13. D 14. C 15. A 16. B 17. D 18. A 19. C 20. D 21. B
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struct tcp_sack_block { u32 start_seq; u32 end_seq; }; /*These are used to set the sack_ok field in struct tcp_options_received */ #define TCP_SACK_SEEN (1 << 0) /*1 = peer is SACK capable, */ #define TCP_DSACK_SEEN (1 << 2) /*1 = DSACK was re...
Specifies the number of retransmissions due to SYN transmission failures during the three-way handshake when a client establishes a connection on an OS that supports the TCP_SYNCNT socket option. 0 indicates that the default value is used. Ignore this parameter for UDS connections. TcpSYNRetries=...
TCP_MAXSEGTCP_NODELAYTCP_SYNCNTTCP_KEEPALIVE当有一个TCP数据段不足MSS，比如要发送700Byte数据，MSS为...
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