v8.1.0 (2024-05-29)

adapt to mirage-vnetif 0.6.2 changes (#517 @hannesm)
Add type prefix = Ipaddr.Prefix.t and IP.configured_ips : t -> prefix to the IP layers (#516 @hannesm)
Mark get_ips as deprecated, use configured_ips instead (#516 @hannesm)

v8.0.2 (2024-05-08)

remove mirage-random-test dependency (#514 @hannesm)
remove calls to mirage-profile in tests, now support mirage-vnetif 0.6.1 (#514 @hannesm)

v8.0.1 (2024-03-26)

TCP: add src : flow -> ipaddr * int, implemented by getsockname on unix (#511 @hannesm)
TCP unix stack: increase TCP buffer size (was 4096, is now 65536) (#510 @edwintorok)
TCP: adapt to mirage-flow 4.0: add val shutdown : flow -> [ `read | `write | `read_write ] -> unit Lwt.t (#512 @hannesm, review by @djs55)

v8.0.0 (2023-03-17)

TCP: add ID for PCB for connection tracking (#495 @TheLortex)
Unix stack, UDP: copy buffer before passing it to client (#502 @reynir)
API renamings (due to ppx_cstruct removal): accessors such as Icmpv4_wire.get_icmpv4_ty are now Icmpv4_wire.get_ty ("_icmpv4" is removed) (#505)
API change: remove deprecated V4-only and V6-only stack The module types Stack.V4 and Stack.V6 no longer exist The bindings Stack.V4V6.listen_udp and listen_tcp have been removed (#494 @hannesm)
Use Cstruct.to_string instead of deprecated Cstruct.copy (#506 @hannesm)
Remove ppx_cstruct dependency (#505 @hannesm)
Remove mirage-profile dependency (#504 @hannesm)
Remove Mirage3 cross-compilation runes (#507 @hannesm)
opam: add lower bounds for cmdliner and alcotest (#506 @hannesm)

v7.1.2 (2022-07-27)

TCP: fix memory leaks on connection close in three scenarios (#489 @TheLortex)
- simultanous close: set up the timewait timer in the Closing(1) - Recv_ack(2) -> Time_wait state transition
- client sends a RST instead of a FIN: enable sending a challenge ACK even when the reception thread is stopped
- client doesn't ACK server's FIN: enable the retransmit timer in the Closing(_) state

v7.1.1 (2022-05-24)

Ndpv6: demote more logs to debug level (#480 @reynir)
Ndpv6: set RS opt header (#482 @reynir)
Icmpv6: add redirect parsing (#481 @reynir)
Improve log messages of connect and disconnect of various layers and stacks: separate IP addresses with ", " (#485 @hannesm)
TCP log sources: prefix "tcp" to distinguish them (#484 @reynir)

v7.1.0 (2022-03-23)

Work with MSVC compiler (@jonahbeckford, #476)
Skip Lwt_bytes UDP tests on Windows (@MisterDA, #469)
Run PKG_CONFIG_PATH through cypath (@MisterDA, #469)
Add Windows CI via GitHub Action (@MisterDA, #469)
Remove which command and replace it by command -v (@hannesm, #472)
Fix some typos (@MisterDA, #471)
Update binaries to cmdliner.1.1.0 (@dinosaure, #475)
Be able to extract via functor/functoria the TCP/IP stack (@dinosaure, #474)
Remove missing deprecated usage of Cstruct.len (@dinosaure, #477)

v7.0.1 (2021-12-17)

Fix cancellation of Unix socket when we don't use Stack.connect (@dinosaure, @hannesm, #466)

v7.0.0 (2021-12-10)

Fix memory leak in processing RST packets (#460 @balrajsingh, reported in #456 by @dinosaure)
Move module types (IP, UDP, TCP, STACK, ICMP) into tcpip core library (#463 @hannesm)
API breakage: Tcpip_checksum is now part of tcpip.checksum (used to be part of tcpip #463 @hannesm)
API breakage: tcpip.unix has been removed (#463 @hannesm)
Use Lwt.pause instead of deprecated Lwt_{unix,main}.yield (#461 @dinosaure)

v6.4.0 (2021-11-11)

Adapt to mirage-protocols 6.0.0 API (#457 @hannesm)
TCP and UDP now have a listen and unlisten function (fixes #452)
type ipinput (in TCP and UDP) and listener (in TCP) have been removed

v6.3.0 (2021-10-25)

Use Cstruct.length instead of deprecated Cstruct.len (#454 @hannesm)
Avoid deprecated Fmt functions (#455 @hannesm)
Remove rresult dependency (#455 @hannesm)
Require OCaml 4.08
Record TCP statistics via metrics library (#455 @hannesm)

v6.2.0 (2021-07-19)

This allows to listen on the same port as sending via UDP in the dual socket stack, and avoids file descriptor leaks in the socket stack.
Socket stack: avoid file descriptor leaks (remember opened file descriptors in data structure, close them in disconnect) (#449 @reynir @hannesm, fixes #446 #450)
Socket stack: convert an incoming packet on a dual socket to v4 source IP if received via IPv4 (#451 @reynir @hannesm)
Allow freestanding compilation without opam (#447 @sternenseemann)
Adapt to alcotest 1.4.0 breaking change (#448 @CraigFE)

v6.1.0 (2021-03-17)

checksum stubs: Drop caml_ from their name (@hannesm, #445)
Add cancellation on tcpip.stack-socket (@dinosaure, @talex5, @hannesm, #443)
Ensure that listen really binds the given socket before creating a task on tcpip.stack-socket (@dinosaure, @hannesm, #439)
Add ppx_cstruct as a dependency (@hannesm, @dinosaure, #439)
Upgrade to ocamlformat.0.17.0 (@dinosaure, #442)
Drop the support of OCaml 4.08.0 (@dinosaure, #442)
Use the usual layout to compile freestanding C stubs and link them to a Solo5 unikernel (@dinosaure, @hannesm, #441) breaking changes C stubs are prepended by mirage_. Symbols such as checksum's symbols are caml_mirage_tcpip_* instead of caml_tcpip_* tcpip.unix is a fake sub-package and user does not it anymore, he can safely remove it from its project.
Conflict with < ocaml-freestanding.0.4.1 (@hannesm, #441)

v6.0.0 (2020-11-30)

Dual IPv4 and IPv6 socket and direct stack support, now requires mirage-stack 2.2.0 and mirage-protocols 5.0.0 (#433 @hannesm)
The above change also unified arguments passed to connect functions which are API-breaking changes
IPv6 waits for timeout after sending neighbour advertisement (for duplicate address detection)
Remove Xen cross-compilation runes, with mirage-xen 6.0.0 they're provided by mirage-xen (#434 @hannesm)
Move to dune 2.7.0 (and bisect instrumentation if desired) (#436 @hannesm)

v5.0.1 (2020-09-22)

Assorted IPv6 improvements (#428 #431 #432 @MagnusS @hannesm)
- set length in packets to be sent
- preserve updated ctx from Ndv6.handle
- fix ICMP checksum computation
- implement Mirage_stack.V6 signature
- add connect, mtu, iperf tests
- fix DAD protocol implementation (and test it)
- avoid out of bounds accesses of IPv6 packets (check length before accessing)
Fix 32 bit issues (@MagnusS)
Implement stack-direct and tcp disconnect: tear down existing connections (#429 @hannesm)
Treat broadcast address of network as broadcast as well (#430 @hannesm, reported in #427)

v5.0.0 (2020-06-19)

Static_ipv4.connect API change: takes a cidr:Ipaddr.V4.Prefix.t instead of ip:Ipaddr.V4.t and network:Ipaddr.V4.Prefix.t (#426 @hannesm)
Adapt to ipaddr 5.0.0 API changes (#426 @hannesm)

v4.1.0 (2020-02-08)

Revert "Ipv4.Fragments use a Lru.M.t instead of Lru.F.t" (#423 by @hannesm) A Lru.M.t allocates a Hashtbl.t of size = capacity (= 256 * 1024 in our case), this leads to excessive ~2MB memory consumption for each Fragment cache, reported by @xaki23 in mirage/qubes-mirage-firewall#93
use SOCK_RAW for an ICMP socket in the unix sockets API (previously used SOCK_DGRAM which did not work) reported by @justinc1 in #358, fixed in #424 by @hannesm
tcp is now compatible with lwt >= 5.0.0 (where Lwt.async requires a function of (unit -> unit Lwt.t) (#370 #425 @cfcs @hannesm, issue #392 @emillon)
Add a dependency on dune-configurator to support dune 2.0.0 (#421 @avsm)

v4.0.0 (2019-11-01)

Adapt to mirage-protocols 4.0.0, mirage-net 3.0.0, mirage-time 2.0.0, mirage-clock 3.0.0, mirage-stack 2.0.0 interface changes (#420 @hannesm)
Revise Static_ipv4.connect signature (for more safety): val connect : ip:(Ipaddr.V4.Prefix.t * Ipaddr.V4.t) -> ?gateway:Ipaddr.V4.t -> ?fragment_cache_size:int -> E.t -> A.t -> t Lwt.t it used to be: val connect : ?ip:Ipaddr.V4.t -> ?network:Ipaddr.V4.Prefix.t -> ?gateway:Ipaddr.V4.t option -> C.t -> E.t -> A.t -> t Lwt.t The clock C.t is gone (due to mirage-clock 3.0.0), ~ip and ~network are now required and passed as pair ~ip. The optional argument ?gateway is of type Ipaddr.V4.t. The new optional labeled argument ~fragment_cache_size specifies the byte size of the IPv4 fragment cache (#420 @hannesm)

v3.7.9 (2019-10-15)

Add ?ttl:int parameter to Udp and Icmp write (#416 @phaer)
Ipv4.Fragments use a Lru.M.t instead of Lru.F.t (#418 @hannesm)
Adapt to mirage-protocols 3.1.0 changes (#419 @hannesm)
- removed IP.set_ip
- added `Would_fragment to Ip.error

v3.7.8 (2019-08-12)

provide Fragments.fragment for the write side of fragmentation, use in Static_ipv4 (#415, @hannesm)

v3.7.7 (2019-07-16)

support ipaddr/macaddr.4.0.0 interfaces (@avsm)
remove extraneous debug messages from Ipv4.Fragments (@hannesm, #410)

v3.7.6 (2019-07-08)

opam: ensure Xen bindings are built with right mirage-xen-ocaml CFLAGS (@avsm)
opam: correctly register mirage-xen-ocaml as a depopt (@avsm)
use mirage-protocols-3.0 interface for ipaddr printing (#408 @yomimono @linse)
remove dependency on configurator and use dune's builtin one instead (@avsm)

v3.7.5 (2019-05-03)

drop IPv4 packets which destination address is not us or broadcast (#407 by @hannesm)

v3.7.4 (2019-04-11)

ipv4 reassembly requires lru 0.3.0 now (#406 by @hannesm)
ICMP test maintenance (#405 by @yomimono @linse)
remove usage of Cstruct.set_len (use Cstruct.sub with offset 0 instead) (#403 by @hannesm)

v3.7.3 (2019-04-06)

fix ICMPv4 checksum calculation (#401 by @yomimono)

v3.7.2 (2019-03-29)

add Ipv4_packet.Unmarshal.header_of_cstruct (#397 by @linse)
require cstruct version 3.2.0 (#398 by @hannesm)

v3.7.1 (2019-02-25)

Adjust to mirage-protocols 2.0.0 changes (#394 by @hannesm)
Ethif is now Ethernet (#394 by @hannesm)
IPv4 write now fragments if payload exceeds MTU (and the optional labeled fragment argument is not false) (#394 by @hannesm)

v3.7.0 (2019-02-02)

Use Lwt_dllist instead of Lwt_sequence, due to the latter being deprecated upstream in Lwt (ocsigen/lwt#361) (#388 by @avsm).
Remove arpv4 and ethif sublibraries, now provided by ethernet and arp-mirage opam packages (#380 by @hannesm).
Upgrade from jbuilder to dune (#391 @avsm)
Switch from topkg to dune-release (#391 @avsm)

v3.6.0 (2019-01-04)

The IPv4 implementation now supports reassembly of IPv4 fragments (#375 by @hannesm)
- using a LRU cache using up to 256KB memory
- out of order fragments are supported
- maximum number of fragments is 16
- timeout between first and last fragment is 10s
- overlapping fragments are dropped
IPv6: use correct timeout value after first NS message (#334 @djs55)
Use Ipaddr.pp instead of Ipaddr.pp_hum due to upstream interface changes (#385 @hannesm).

v3.5.1 (2018-11-16)

socket stack (tcp/udp): catch exception in recv_from and accept (#376 @hannesm)
use mirage-random-test for testing (Stdlibrandom got removed from mirage-random>1.2.0, #377 @hannesm)

v3.5.0 (2018-09-16)

Ipv4: require Mirage_random.C, used for generating IPv4 identifier instead of using OCaml's stdlib Random directly (#371 @hannesm)
Tcp: use entire 32 bits at random for the initial sequence number, thanks to Spencer Michaels and Jeff Dileo of NCC Group for reporting (#371 @hannesm)
adjust to mirage-protocols 1.4.0 and mirage-stack 1.3.0 changes (#371 @hannesm) Arp no longer contains the type alias ethif Ethif no longer contains the type alias netif Static_ipv4 no longer contains the type alias ethif and prefix Ipv6 no longer contains the type alias ethif and prefix Mirage_protocols_lwt.IPV4 no longer contains the type alias ethif Mirage_protocols_lwt.UDPV4 and TCPV4 no longer contain the type alias ip
remove unused types: 'a config, netif, and id from socket and direct stack (#371 @hannesm)
remove usage of Result, depending on OCaml >= 4.03.0 (#372 @hannesm)

v3.4.2 (2018-06-15)

Note the use of the new TCP keep-alive feature can cause excessive amounts of memory to be used in some circumstances, see #367

Ensure a zero UDP checksum is sent as 0xffff, not 0x0000 (#359 @stedolan)
Avoid leaking a file descriptor in the socket stack if the connection fails (#363 @hannesm)
Avoid raising an exception with Lwt.fail when write fails in the socket stack (#363 @hannesm)
Ignore EBADF errors in close in the socket stack (#366 @hannesm)
Emit a warning when TCP keep-alives are used (#368 @djs55)

v3.4.1 (2018-03-09)

expose tcp_socket_options in the socket stack, fixing downstream builds (#356 @yomimono)
add missing dependencies and constraints (#354 @yomimono, #353 @rgrinberg)
remove leftover ocamlbuild files (#353 @rgrinberg)

v3.4.0 (2018-02-15)

Add support for TCP keepalives (#338 @djs55)
Fix TCP deadlock (#343 @mfp)
Update the CI to test OCaml 4.04, 4.05, 4.06 (#344 @yomimono)

v3.3.1 (2017-11-07)

Add an example for user-space ping, and some socket ICMPv4 fixes (#336 @djs55)
Make tcpip safe-string-safe (and buildable by default on OCaml 4.06.0) (#341 @djs55)

v3.3.0 (2017-08-08)

Test with current mirage-www master (#323 @yomimono)
Improve the Tcp.Wire API (#325 @samoht)
Add dependency from stack-unix to io-page-unix (@avsm)
Replace dependency on cstruct.lwt with cstruct-lwt (#322 @yomimono)
Update to lwt 3.0 (#326 @samoht)
Replace oUnit with alcotest (#329 @samoht)
Fix stub linking on Xen (#332 @djs55)
Add support for ICMP sockets on Windows (#333 @djs55)

v3.2.0 (2017-06-26)

port to jbuilder. Build time is now roughly 4-5x faster than the old oasis-based build system.
packs have been replaced by module aliases.

v3.1.4 (2017-06-12)

avoid linking to cstruct.ppx in the compiled library and only use it at build time (#316 @djs55)
use improved packet size support in mirage-vnetif>=0.4.0 to test the MTU fixes in #313.

v3.1.3 (2017-05-23)

involve the IP layer's MTU in the TCP MSS calculation (hopefully correctly) (#313, by @yomimono)

v3.1.2 (2017-05-14)

impose a maximum TCP MSS of 1460 to avoid sending over-large datagrams on 1500 MTU links (#309, by @hannesm)

v3.1.1 (2017-05-14)

fix parsing 20-byte cstructs as ipv4 packets (#307, by @yomimono)
udp: payload length parse fix (#307, by @yomimono)
support lwt >= 2.7.0 (#308, by @djs55)

v3.1.0 (2017-03-14)

implement MTU setting and querying in the Ethernet module (compatibility with mirage-protocols version 1.1.0), and use this value to inform TCP's MSS. (#288, by @djs55)
rename the ~payload argument of TCP/UDP marshallers to ~payload_len, in an attempt to clarify that the payload will not be copied to the Cstruct.t returned by these functions (#301, by @talex5)
functorize ipv6 over a random implementation (#298, by @olleolleolle and @hannesm)
add tests for sending and receiving UDP packets over IPv6 (#300, by @mattgray)
avoid float in TCP RTO calculations. (#295, by @olleolleolle and @mattgray)
numerous bugfixes in header marshallers and unmarshallers (#301, by @talex5 and @yomimono)
replace polymorphic equality in _packet.equals functions (#302, by @yomimono)

v3.0.0 (2017-02-23)

adapt to MirageOS 3 API changes (many PRs, from @hannesm, @samoht, and @yomimono):
- replace error polyvars in many functions with result types
- define and use error types
- connect in various modules now returns the device directly or raises an exception
- refer to mirage-protocols and mirage-stacks, rather than mirage-types
if no UDP source port is given to UDP.write, choose a random one (#272, by @hannesm)
remove Ipv4.Routing.No_route_to_destination_address exception; treat routing failures as normal packet loss in TCP (#269, by @yomimono)
Ipv6.connect takes a list of IPs (#268, by @yomimono)
remove exception "Refused" in TCP (#267, by @yomimono)
remove DHCP module. Users may be interested in the replacement charrua-core (#260, by @yomimono)
move Ipv4 to Static_ipv4, which can be used by other IPv4 modules with their own configuration logic (#260, by @yomimono)
remove mode from STACKV4 record and configuration; Ipv4.connect now requires address parameters and the module exposes no methods for modifying them. (#260, by @yomimono)
remove unused id types no longer required by mirage-types (#255, by @yomimono)
overhaul how random is used and handled (#254 and others, by @hannesm)
fix redundant memset that zeroed out options in Tcp_packet.Marshal.into_cstruct (#250, by @balrajsingh)
add vnetif backend for triggering fast retransmit in iperf tests (#248, by @magnuss)
fixes for incorrect timer values (#247, by @balrajsingh)
add vnetif backend that drops packets with no payload (#246, by @magnuss)
fix a race when closing test pcap files (#246, by @magnuss)

v2.8.1 (2016-09-12)

Set the TCP congestion window correctly when going into fast-recovery mode. (#244, by @balrajsingh)
When TCP packet loss is discovered by timeout, allow transition into fast-recovery mode. (#244, by @balrajsingh)

v2.8.0 (2016-04-04)

Provide an implementation for the ICMPV4 module type defined in mirage-types 2.8.0. Remove default ICMP handling from the IPv4 module, but preserve it in tcpip-stack-direct. (#195 by @yomimono)
Explicitly require the use of an OCaml compiler >= 4.02.3 . (#195 by @yomimono)
Explicitly depend on result. (#195 by @yomimono)

v2.7.0 (2016-03-20)

Raise Invalid_argument if given an invalid port number in listen_{tcp,udp}v4 (#173 by @matildah and #175 by @hannesm)
Improve TCP options marshalling/unmarshalling (#174 by @yomimono)
Add state tests and fixes for closure conditions (#177 #176 by @yomimono)
Remove bogus warning (#178 by @talex5)
Clean up IPv6 stack (#179 by @nojb)
RST checking from RFC5961 (#182 by @ppolv)
Transform EPIPE exceptions into `Eof (#183 by @djs55)
Improve error strings in IPv4 (#184 by @yomimono)
Replace use of cstruct.syntax with cstruct.ppx (#188 by @djs55)
Make the Unix subpackages optional, so the core builds on Win32 (#191 by @djs55)

v2.6.1 (2015-09-15)

Add optional arguments for settings in ip v6 and v4 connects (#170, by @Drup)
Expose Ipv4.Routing.No_route_to_destination_address (#166, by @yomimono)

v2.6.0 (2015-07-29)

ARP now handles ARP frames, not Ethernet frames with ARP payload (#164, by @hannesm)
Check length of received ethernet frame to avoid cstruct exceptions (#117, by @hannesm)
Pull arpv4 module out of ipv4. Also add unit-tests for the newly created ARP library (#155, by @yomimono)

v2.5.1 (2015-07-07)

Fix regression introduced in 2.5.0 where packet loss could lead to the connection to become very slow (#157, MagnusS, @talex5, @yomimono and @balrajsingh)
Improve the tests: more logging, more tracing and compile to native code when available, etc (@MagnusS and @talex5)
Do not raise Invalid_argument("Lwt.wakeup_result") every time a connection is closed. Also now pass the raised exceptions to Lwt.async_exception_hook instead of ignoring them transparently, so the user can decide to shutdown its application if something wrong happens (#153, #156, @yomomino and @talex5)
The channel library now lives in a separate repository and is released separately (#159, @samoht)

v2.5.0 (2015-06-10)

The test runs now produce .pcap files (#141, by @MagnusS)
Strip trailing bytes from network packets (#145, by @talex5)
Add tests for uniform packet loss (#147, by @MagnusS)
fixed bug where in case of out of order packets the ack and window were set incorrectly (#140, #146)
Properly handle RST packets (#107, #148)
Add a Log module to control at runtime the debug statements which are displayed (#142)
Writing in a PCB which does not have the right state now returns an error instead of blocking (#150)

v2.4.3 (2015-05-05)

Fix infinite loop in Channel.read_line when the line does not contain a CRLF sequence (#131)

v2.4.2 (2015-04-29)

Fix a memory leak in Channel (#119, by @yomimono)
Add basic unit-test for channels (#119, by @yomimono)
Add alcotest testing templates
Modernize Travis CI scripts

v2.4.1 (2015-04-21)

Merge between 2.4.0 and 2.3.1

v2.4.0 (2015-03-24)

ARP improvements (#118)

v2.3.1 (2015-03-31)

Do not raise an assertion if an IP frame has extra trailing bytes (#221).

v2.3.0 (2015-03-09)

Fix STACKV4 for the DEVICE signature which has connect removed (in Mirage types 2.3+).

v2.2.3 (2015-03-09)

Add ICMPv6 error reporting functions (#101)
Add universal IP address converters (#108)
Add error_message functions for human-readable errors (#98)
Improve debug logging for ICMP Destination Unreachable packets.
Filter incoming frames by MAC address to stop sending unnecessary RSTs. (#114)
Unhook unused modules Sliding_window and Profiler from the build. (#112)
Add an explicit connect method to the signatures. (#100)

v2.2.2 (2015-01-11)

Readded tracing and ARP fixes which got accidentally reverted in the IPv6 merge. (#96)

v2.2.1 (2014-12-20)

Use Bytes instead of String to begin the -safe-string migration in OCaml 4.02.0 (#93).
Remove dependency on uint to avoid the need for a C stub (#92).

v2.2.0 (2014-12-18)

Add IPv6 support. This changeset minimises interface changes to the existing STACKV4 interfaces to facilitate a progressive merge. The only visible interface changes are:

IPV4.set_ipv4_* functions have been renamed IPV4.set_ip_* because they are shared between IPV4 and IPV6.
IPV4.get_ipv4 and get_ipv4_netmask now return a list of Ipaddr.V4.t (again because this is the common semantics with IPV6.)
Several types that had v4 in their names (like IPV4.ipv4addr) have lost that particle.

v2.1.1 (2014-12-12)

Improve console printing for the DHCP client to output line breaks properly on Xen consoles.

v2.1.0 (2014-12-07)

Build Xen stubs separately, with CFLAGS from mirage-xen 2.1.0+. This allows us to use the red zone under x86_64 Unix again.
Adding tracing labels and counters, which introduces a new dependency on the mirage-profile package.

v2.0.3 (2014-12-05)

Fixed race waiting for ARP response (#86).
Move the the code that configures IPv4 address, netmask and gateways after receiving a successful lease out of the Dhcp_clientv4 module and into Stackv4 (#87)

v2.0.2 (2014-12-01)

Add IPv4 multicast to MAC address mapping in IPv4 output processing (#81 from Luke Dunstan).
Improve formatting of DHCP console logging, including printing out options (#83).
Build with -mno-red-zone on x86_64 to avoid stack corruption on Xen (#80).

v2.0.1 (2014-11-04)

Fixed race condition in the signalling between the rx/tx threads under load.
Experimentally switch to immediate ACKs in TCPv4 by default instead of delayed ones.

v2.0.0 (2014-11-02)

Moved 1s complement checksum C code here from mirage-platform.
Depend on Console_unix and Console_xen instead of Console.
[socket] Do not return an Eof when writing 0-length buffer (#76).
[socket] Accept callbacks now run in async threads instead of being serialised (#75).

v1.1.6 (2014-07-20)

Quieten down the stack logging rate by not announcing IPv6 packet discards.
Raise exception Bad_option for unparsable or invalid TCPv4 options (#57).
Fix linking error with module Tcp_checksum by lifting it into top library (#60).
Add opam file to permit easier local pinning, and fix Travis to use this.

v1.1.5 (2014-06-18)

Ensure that DHCP completes before the application is started, so that unikernels that establish outgoing connections can do so without a race. (fix from Mindy Preston in #53, followup in #55)
Add echo, chargen and discard services into the examples/ directory. (from Mindy Preston in #52).

v1.1.4 (2014-06-03)

[tcp] Fully process the last ACK in a 3-way handshake for server connections. This ensures that a FIN is correctly transmitted upon application-initiated connection close. (fix from Mindy Preston in #51).

v1.1.3 (2014-03-01)

Expose IPV4 through the STACKV4 interface.

v1.1.2 (2014-03-27)

Fix DHCP variable length option parsing for MTU responses, which in turns improves robustness on Amazon EC2 (fix from @yomimono via #48)

v1.1.1 (2014-02-21)

Catch and ignore top-level socket exceptions (#219).
Set SO_REUSEADDR on listening sockets for Unix (#218).
Adapt the Stack interfaces to the v1.1.1 mirage-types interface (see mirage/mirage#226 for details).

v1.1.0 (2014-02-03)

Rewrite of the library as a set of functors that parameterize the stack across the V1_LWT module types from Mirage 1.1.x. This removes the need to compile separate Xen and Unix versions of the stack.

v0.9.5 (2013-12-08)

Build for either Xen or Unix, depending on the value of the OS envvar.
Shift to the mirage-types 0.5.0+ interfaces, which breaks the socket backend (temporarily).
Port the direct stack to the new interfaces.
Add Travis CI scripts.

v0.9.4 (2013-08-09)

Use the Ipaddr external library and remove the Homebrew equivalents in Nettypes.

v0.9.3 (2013-07-18)

Changes in module Manager: Removed some functions from the `.mli (plug/unplug) and added some modifications in the way the Manager interacts with the underlying module Netif. The Netif.create function does not take a callback anymore.

v0.9.2 (2013-07-09)

Improve TCP state machine for connection teardown.
Limit fragment number to 8, and coalesce buffers if it goes higher.
Adapt to mirage-platform-0.9.2 API changes.

v0.9.1 (2013-06-12)

Depend on mirage-platform-0.9.1 direct tuntap interfaces.
Version bump to catch up with mirage-platform.

v0.5.2 (2013-02-08)

Encourage scatter-gather I/O all the time, rather than playing tricks with packet header buffers. This simplifies the output path considerably and cuts minor heap allocations down.
Install the packed cmx along with the cmxa to ensure that the compiler can do cross-module optimization (this is not a fatal error, but will impact performance if the cmx file is not present).

v0.5.1 (2012-12-20)

Update socket stack to use Cstruct 0.6.0 API

v0.5.0 (2012-12-20)

Update Cstruct API to 0.6.0
[tcp] write now blocks if the write buffer and write window are full

v0.4.1 (2012-12-14)

Add iperf self-test that creates two VIFs and transmits across them. This is a useful local test which stresses the bridge code using just one VM.
Add support for attaching existing devices when initialising the network manager, via an optional attached parameter.
Constrain TCP connect to be a unit Lwt.t instead of a polymorphic return value.
Expose IPv4 netmask function.
Reduce ARP verbosity to the console.
Fix TCP fast recovery to wait until all in-flight packets are acked, rather then exiting early.

v0.4.0 (2012-12-11)

Require OCaml-4.00.0 or higher, and add relevant build fixes to deal with module packing.

v0.3.1 (2012-12-10)

Fix the DHCP client marshalling for IPv4 addresses.
Expose the interface MAC address in the Manager signature.
Tweak TCP ISN calculation to be more friendly on a 32-bit host.
Add Manager.create ?devs to control the number of Netif devices constructed by default.
Add Ethif.set/disable_promiscuous to permit directly tapping a network interface.

v0.3.0 (2012-09-04)

Initial public release.

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