2. 在 16s 之后,TCP Stream 1 客户端 No.1044 SYN 发出,服务器响应了一个 ACK=158049099,乍看之下感觉 Num 158049099 出现的莫名其妙,但实际需要注意的是,Wireshark 默认的是 TCP 相对序列号,而不是绝对序列号。关闭 TCP Relative sequence numbers 选项后的信息如下 之前的相对序列号 158049099 ,实际上是绝对...
从大型 TCP 数据包派生的段数据包数量必须等于或大于微型端口驱动程序指定的MinSegmentCount值。 有关MinSegmentCount值的详细信息,请参阅报告 NIC 的 LSOv1 TCP 数据包分段功能和报告 NIC 的 LSOv2 TCP 数据包分段功能。 以下假设和限制适用于处理任何支持 LSO 的微型端口驱动程序(无论版本如何)的 IP ...
= Synchronize sequence numbers TCP: ...0 = No Fin TCP: Window = 8192 (0x2000) TCP: Checksum = 0xF213 TCP: Urgent Pointer = 0 (0x0) TCP: Options TCP: Option Kind (Maximum Segment Size) = 2 (0x2) TCP: Option Length = 4 (0x4) TCP: Option Value = 1460 (0x5B4) TCP: Fr...
2:最大报文段长度(4字节,Maximum Segment Size,MSS)通常在创建连接而设置 SYN 标志的数据包中指明这个选项,指明本端所能接收的最大长度的报文段。通常将MSS设置为(MTU-40)字节,携带 TCP 报文段的IP数据报的长度就不会超过 MTU(MTU 最大长度为1518字节,最短为 64 字节),从而避免本机发生IP 分片。只能出现在...
Options(0 - 320 bits): Use the Options field if you want to include TCP functions that don’t belong in the general header, for example if you want to define the maximum segment size. The length of the options must always be a multiple of 32, otherwise zero-bit padding is required. ...
/* This structure represents a TCP segment on the unsent, unacked and ooseq queues */structtcp_seg{structtcp_seg*next;/* 链表节点 */structpbuf*p;/* TCP报文:TCP首部 + TCP数据 */u16_tlen;/* 报文段的纯TCP数据长度(不统计SYN和FIN) */#ifTCP_OVERSIZE_DBGCHECKu16_toversize_left;/* 当前...
Specifies an array of initial sizes of the congestion window. The cmdlet gets settings that have the initial congestion window value that you specify. Provide a value to multiply by the maximum segment size (MMS). The acceptable values for this parameter are: an even number from 2 through 64...
To help inform the sender of this event, the receiver immediately sends an ACK, with the ACK number set to the sequence number that it was expecting. It will continue to do so for each additional TCP segment that arrives. When the sender starts to receive a stream of ACKs that's ...
· mss—Maximum segment size in received packets. iss Sequence number in the SYN packet when the IPv6 TCP connection was established. irs Sequence number in the ACK packet when the IPv6 TCP connection was established. in x (drop x) Number of received IPv6 packets. The value in parent...
目前这个字段仅仅用于表示TCP协议最大分段容量,即MSS((Max Segment Size))。这个字段用于在第一次和第二次握手告知对方自己能够接收的最大分段容量,如果不设置,则代表没有限制。 Padding(补足字段) Options和Padding一共有32位,由于Options字段不是固定的,所以需要Padding 字段来加以补齐 ...