fetchai / ledger

Official Fetch.AI Ledger C++ implementation

This repository has been archived

It is now read only. You can still take a look at the old README

If you're looking for the current fetch.ai ledger software, please head to fetchai/fetchd

ledger's Issues

Make ConstByteArray

Integrate HTTP interface so Josh can use the OEF code

As above, Troells has written the HTTP API, integrate this and fulfill or stub functionality

ConstByteArray does not deserialize

Add stream buffer to TCP protocol

bad_weak_ptr on client fails connecting

Make Nodes multi-node

This initially will be done using the RPC interface, but should also use, or be replaced with the Subscribe interface.

Quite a big task. Ordered goals:

• Nodes will connect to other Nodes/IP addresses on construction
• Nodes will forward and filter queries so a query to a node queries all nodes (subject to constraint on number of hops)
• Nodes will re-organise themselves according to their connection policy

Make callback for when connection is established

Create robust unit tests for networking code

NW code prone to race conditions etc, and risks heartbleed-esque bugs if incorrect

Clean up OEF example

Clean up OEF code so it can go into master or http_server branch:

• Implementation -> OEFManager
• Move to /include to indicate this is a new protocol

Pure virtual function called.

Note the incorrect connection to 8080 that causes this.

Ctrl-C to stop
[ 2018-02-06 10:49:44 ] HTTP connection from 127.0.0.1
[ 2018-02-06 10:49:44 ] Client joining with handle 0
[ 2018-02-06 10:49:44 ] Ready to ready HTTP header
[ 2018-02-06 10:49:44 ] Read HTTP header
[ 200 OK ] /node-details, text/html
[ 2018-02-06 10:49:44 ] Client manager did send message to 0
[ 2018-02-06 10:49:44 ] Ready to ready HTTP header
[ 2018-02-06 10:50:06 ] Read HTTP header
Connecting to 127.0.0.1 on port 8080

• bootstrapping 127.0.0.1 8080
  [ 2018-02-06 10:50:06 ] Adding BeforeStart event listener 4 from thread manager
  [ 2018-02-06 10:50:06 ] Adding BeforeStop event listener 5 from thread manager
  [ 2018-02-06 10:50:06 ] HTTP connection from 127.0.0.1
  [ 2018-02-06 10:50:06 ] Client joining with handle 1
  [ 2018-02-06 10:50:06 ] Ready to ready HTTP header
  [ 2018-02-06 10:50:07 ] Sending message to server
  [ 2018-02-06 10:50:07 ] Start writing message
  [ 2018-02-06 10:50:07 ] Wrote message.
  [ 2018-02-06 10:50:09 ] Connection timed out! 2001 vs. 2000
  [ 2018-02-06 10:50:09 ] Client not repsonding - hanging up!
  [ 2018-02-06 10:50:09 ] Removing event listener 4 from thread manager
  [ 2018-02-06 10:50:09 ] Erasing BeforeStart.
  [ 2018-02-06 10:50:09 ] Done removing event listener 4 from thread manager
  [ 2018-02-06 10:50:09 ] Removing event listener 5 from thread manager
  [ 2018-02-06 10:50:09 ] Erasing BeforeStop.
  [ 2018-02-06 10:50:09 ] Done removing event listener 5 from thread manager
  [ 2018-02-06 10:50:09 ] Reading header failed, closing connection.
  libc++abi.dylib: Pure virtual function called!
  Abort trap: 6

Separate io_service into common class with threading

Fix or remove load_image_read_exceptions_test

Fix or remove benchmark_linalg_matrix (does not compile)

Create HTTP app instance to make various parts of the HTTP protocols pluggable

Deadlock on swarm self-connect

Start a swarm node and connect it to it-self. The deadlock is silent.

Node crashes when submitting transactions during connectivity establishment.

Create FixedSizeByteArray

and FixedSizeConstByteArray

Fix or remove file_object_test

OEF: Add keywords to DataModels, add keywords to querymodel

as above, all DataModels must provide at least one keyword. This will be searchable using a querymodel

Get rid of all TODO and TODO_FAIL

Consider amortized constant memory allocaion for byte_arrays

If the programmer does not reserve the correct amount of memory before serialization, performance is 50x slower due to constantly reallocating memory. One solution would be to allow std::vector-like memory reallocation

Create header checksum in network

Resolve own IP

Service protocol should upon overflow of arguments with an exception

Throw exception when adding beforestart on thread manager after it was started

Fix or remove example_simple-ledger ledger example

Fix or remove hamming_test (from the math library)

Fix or remove ndarray_test (from the math library)

Refactor: ReferencedByteArray -> ByteArray

Migrate to ConstByteArray everywhere it is not needed to modify

Problems with trailing slashes in http server

Add "FailSilently" to promise

Create subscribe/publish protocol

Reimplement BigUint using VectorRegister

Current implementation is pretty poor and should at the very least be redone with uint64_t if this will be used beyond our proof of concept using PoW

Make EntryPoint threadsafe

Build connectivity strategy

Working overlaps between HTTP and TCP implementation and sort out

Fix or remove example_peer-to-peer-v2 ledger example

Fix or remove promise_counter_test

Add noexcept throughout the code as applicable.

unsubscribe client on ungraceful dropout

possible memory leak when destructing/constructing tcp client

network test will segfault and leak/throw exceptions when destructed during data sending

Fix or remove variant_stack_test

No support for const& and const functions in CallableMemberFunction

Discover ungraceful disconnect in P2P protocol

Add RPC/Subscription interface request

It might be interesting if there were a way for a hopeful client to inspect the API of a node, perhaps as a set of function definitions, so it would be possible for a client to inspect and use the RPC interface of a node without prior knowledge

Replace all asserts with exceptions

Fix or remove example_peer-to-peer ledger example

Fix or remove distance_matrix_test (from the math library)

Make policy module and link it to a central configuration