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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

  • Remove IpRepr::Unspecified (#579)
  • Remove IpVersion::Unspecified
  • Remove IpAddress::Unspecified
  • When sending packets with a raw socket, the source IP address is sent unmodified (it was previously replaced with the interface's address if it was unspecified).
  • Fix enable defmt/alloc if alloc or std is enabled.
  • Minimum Supported Rust Version (MSRV) bumped from 1.56 to 1.65

0.8.2 - 2022-11-27

  • tcp: Fix return value of nagle_enable (#642)
  • tcp: Only clear retransmit timer when all packets are acked (#662)
  • tcp: Send incomplete fin packets even if nagle enabled (#665)
  • phy: Fix mtu calculation for raw_socket (#611)
  • wire: Fix ipv6 contains_addr function (#605)

0.8.1 - 2022-05-12

  • Remove unused rand_core dep. (#589)
  • Use socklen_t instead of u32 for RawSocket bind() parameter. Fixes build on 32bit Android. (#593)
  • Propagate phy::RawSocket send errors to caller (#588)
  • Fix Interface set_hardware_addr, get_hardware_addr for ieee802154/6lowpan. (#584)

0.8.0 - 2021-12-11

  • Minimum Supported Rust Version (MSRV) bumped from 1.40 to 1.56
  • Add support for IEEE 802.15.4 + 6LoWPAN medium (#469)
  • Add support for IP medium (#401)
  • Add defmt logging supprt (#455)
  • Add RNG infrastructure (#547, #573)
  • Add Context struct that must be passed to some socket methods (#500)
  • Remove SocketSet, sockets are owned by Interface now. (#557, #571)
  • TCP: Add Nagle's Algorithm. (#500)
  • TCP crash and correctness fixes:
    • Add Nagle's Algorithm. (#500)
    • Window scaling fixes. (#500)
    • Fix delayed ack causing ack not to be sent after 3 packets. (#530)
    • Fix RTT estimation for RTTs longer than 1 second (#538)
    • Fix infinite loop when remote side sets a MSS of 0 (#538)
    • Fix infinite loop when retransmit when remote window is 0 (#538)
    • Fix crash when receiving a FIN in SYN_SENT state (#538)
    • Fix overflow crash when receiving a wrong ACK seq in SYN_RECEIVED state (#538)
    • Fix overflow crash when initial sequence number is u32::MAX (#538)
    • Fix infinite loop on challenge ACKs (#542)
    • Reply with RST to invalid packets in SynReceived state. (#542)
    • Do not abort socket when receiving some invalid packets. (#542)
    • Make initial sequence number random. (#547)
    • Reply with RST to ACKs with invalid ackno in SYN_SENT. (#522)
  • ARP fixes to deal better with broken networks:
    • Fill cache only from ARP packets, not any packets. (#544)
    • Fill cache only from ARP packets directed at us. (#544)
    • Reject ARP packets with a source address not in the local network. (#536, #544)
    • Ignore unknown ARP packets. (#544)
    • Flush neighbor cache on IP change (#564)
  • UDP: Add close() method to unbind socket. (#475, #482)
  • DHCP client improvements:
    • Refactored implementation to improve reliability and RFC compliance (#459)
    • Convert to socket (#459)
    • Added max_lease_duration option (#459)
    • Do not set the BROADCAST flag (#548)
    • Add option to ignore NAKs (#548)
  • DHCP wire:
    • Fix DhcpRepr::buffer_len not accounting for lease time, router and subnet options (#478)
    • Emit DNS servers in DhcpRepr (#510)
    • Fix incorrect bit for BROADCAST flag (#548)
  • Improve resilience against packet ingress processing errors (#281, #483)
  • Implement std::error::Error for smoltcp::Error (#485)
  • Update managed from 0.7 to 0.8 (442)
  • Fix incorrect timestamp in PCAP captures (#513)
  • Use microseconds instead of milliseconds in Instant and Duration (#514)
  • Expose inner Device in PcapWriter (#524)
  • Fix assert with any_ip + broadcast dst_addr. (#533, #534)
  • Simplify PcapSink trait (#535)
  • Fix wrong operation order in FuzzInjector (#525, #535)

0.7.5 - 2021-06-28

  • dhcpv4: emit DNS servers in repr (#505)

0.7.4 - 2021-06-11

  • tcp: fix "subtract sequence numbers with underflow" on remote window shrink. (#490)
  • tcp: fix substract with overflow when receiving a SYNACK with unincremented ACK number. (#491)
  • tcp: use nonzero initial sequence number to workaround misbehaving servers. (#492)

0.7.3 - 2021-05-29

  • Fix "unused attribute" error in recent nightlies.

0.7.2 - 2021-05-29

  • iface: check for ipv4 subnet broadcast addrs everywhere (#462)
  • dhcp: always send parameter_request_list. (#456)
  • dhcp: Clear expiration time on reset. (#456)
  • phy: fix FaultInjector returning a too big buffer when simulating a drop on tx (#463)
  • tcp rtte: fix "attempt to multiply with overflow". (#476)
  • tcp: LastAck should only change to Closed on ack of fin. (#477)
  • wire/dhcpv4: account for lease time, router and subnet options in DhcpRepr::buffer_len (#478)

0.7.1 - 2021-03-27

  • ndisc: Fix NeighborSolicit incorrectly asking for src addr instead of dst addr (419)
  • dhcpv4: respect lease time from the server instead of renewing every 60 seconds. (437)
  • Fix build errors due to invalid combinations of features (416, 447)
  • wire/ipv4: make some functions const (420)
  • phy: fix BPF on OpenBSD (421, 427)
  • phy: enable RawSocket, TapInterface on Android (435)
  • phy: fix phy_wait for waits longer than 1 second (449)

0.7.0 - 2021-01-20

  • Minimum Supported Rust Version (MSRV) bumped from 1.36 to 1.40

New features

  • tcp: Allow distinguishing between graceful (FIN) and ungraceful (RST) close. On graceful close, recv() now returns Error::Finished. On ungraceful close, Error::Illegal is returned, as before. (351)
  • sockets: Add support for attaching async/await Wakers to sockets. Wakers are woken on socket state changes. (394)
  • tcp: Set retransmission timeout based on an RTT estimation, instead of the previously fixed 100ms. This improves performance on high-latency links, such as mobile networks. (406)
  • tcp: add Delayed ACK support. On by default, with a 10ms delay. (404)
  • ip: Process broadcast packets directed to the subnet's broadcast address, such as 192.168.1.255. Previously broadcast packets were only processed when directed to the 255.255.255.255 address. (377)

Fixes

  • udp,raw,icmp: Fix packet buffer panic caused by large payload (332)
  • dhcpv4: use offered ip in requested ip option (310)
  • dhcpv4: Re-export dhcp::clientv4::Config
  • dhcpv4: Enable proto-dhcpv4 feature by default. (327)
  • ethernet,arp: Allow for ARP retry during egress (368)
  • ethernet,arp: Only limit the neighbor cache rate after sending a request packet (369)
  • tcp: use provided ip for TcpSocket::connect instead of 0.0.0.0 (329)
  • tcp: Accept data packets in FIN_WAIT_2 state. (350)
  • tcp: Always send updated ack number in ack_reply(). (353)
  • tcp: allow sending ACKs in FinWait2 state. (388)
  • tcp: fix racey simultaneous close not sending FIN. (398)
  • tcp: Do not send window updates in states that shouldn't do so (360)
  • tcp: Return RST to unexpected ACK in SYN-SENT state. (367)
  • tcp: Take MTU into account during TcpSocket dispatch. (384)
  • tcp: don't send data outside the remote window (387)
  • phy: Take Ethernet header into account for MTU of RawSocket and TapInterface. (393)
  • phy: add null terminator to c-string passed to libc API (372)

Quality of Life™ improvements

  • Update to Rust 2018 edition (396)
  • Migrate CI to Github Actions (390)
  • Fix clippy lints, enforce clippy in CI (395, 402, 403, 405, 407)
  • Use #[non_exhaustive] for enums and structs (409, 411)
  • Simplify lifetime parameters of sockets, SocketSet, EthernetInterface (410, 413)