cnp3-ebook/protocols/tcp — English @ Weblate

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188 ../../protocols/tcp.rst:634

	English Of course, such a simultaneous TCP establishment can only occur if the source port chosen by the client is equal to the destination port chosen by the server. This may happen when a host can serve both as a client as a server or in peer-to-peer applications when the communicating hosts do not use ephemeral port numbers. 321/10000 · 321
189 ../../protocols/tcp.rst:636

	English Sending a packet with a different source IP address than the address allocated to the host is called sending a :term:`spoofed packet`. 134/10000 · 134
190 ../../protocols/tcp.rst:638

	English The full list of all TCP options may be found at http://www.iana.org/assignments/tcp-parameters/ 96/10000 · 96
191 ../../protocols/tcp.rst:640

	English In practice, only the `SYN` segment do not have their `ACK` flag set. 69/10000 · 69
192 ../../protocols/tcp.rst:642

	English A complete TCP implementation contains additional information in its TCB, notably to support the `urgent` pointer. However, this part of TCP is not discussed in this book. Refer to :rfc:`793` and :rfc:`2140` for more details about the TCB. 239/10000 · 239
193 ../../protocols/tcp.rst:646

	English This TCP segment is then placed in an IP header. We describe IPv6 in the next chapter. The minimum size of the IPv6 (resp. IPv4) header is 40 bytes (resp. 20 bytes). 165/10000 · 165
194 ../../protocols/tcp.rst:649

	English A precise estimation of the maximum bandwidth that can be achieved by a TCP connection should take into account the overhead of the TCP and IP headers as well. 159/10000 · 159
195 ../../protocols/tcp.rst:651

	English See http://fasterdata.es.net/tuning.html for more information on how to tune a TCP implementation 97/10000 · 97
196 ../../protocols/tcp.rst:653

	English In theory, a TCP implementation could store the timestamp of each data segment transmitted and compute a new estimate for the round-trip-time upon reception of the corresponding acknowledgment. However, using such frequent measurements introduces a lot of noise in practice and many implementations still measure the round-trip-time once per round-trip-time by recording the transmission time of one segment at a time :rfc:`2988` 429/10000 · 429
197 ../../protocols/tcp.rst:655

	English Some security experts have raised concerns that using the real-time clock to set the `TSval` in the timestamp option can leak information such as the system's up-time. Solutions proposed to solve this problem may be found in [CNPI09]_ 234/10000 · 234
198 ../../protocols/tcp.rst:657

	English As a TCP client often establishes several parallel or successive connections with the same server, :rfc:`2140` has proposed to reuse for a new connection some information that was collected in the TCB of a previous connection, such as the measured rtt. However, this solution has not been widely implemented. 308/10000 · 308
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