-
Notifications
You must be signed in to change notification settings - Fork 30
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge branch 'main' into add-missing-verack-message
- Loading branch information
Showing
9 changed files
with
388 additions
and
83 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,143 @@ | ||
| const std = @import("std"); | ||
| const protocol = @import("../lib.zig"); | ||
| const genericChecksum = @import("lib.zig").genericChecksum; | ||
| const NetworkAddress = @import("../types/NetworkAddress.zig").NetworkAddress; | ||
| const genericDeserializeSlice = @import("lib.zig").genericDeserializeSlice; | ||
| const genericSerialize = @import("lib.zig").genericSerialize; | ||
|
|
||
| const Endian = std.builtin.Endian; | ||
| const Sha256 = std.crypto.hash.sha2.Sha256; | ||
|
|
||
| const CompactSizeUint = @import("bitcoin-primitives").types.CompatSizeUint; | ||
|
|
||
| pub const NetworkIPAddr = struct { | ||
| time: u32, // Unix epoch time | ||
| address: NetworkAddress, | ||
|
|
||
| // NetworkIPAddr eql | ||
| pub fn eql(self: *const NetworkIPAddr, other: *const NetworkIPAddr) bool { | ||
| return self.time == other.time and self.address.eql(&other.address); | ||
| } | ||
|
|
||
| pub fn serializeToWriter(self: *const NetworkIPAddr, writer: anytype) !void { | ||
| try writer.writeInt(u32, self.time, .little); | ||
| try self.address.serializeToWriter(writer); | ||
| } | ||
|
|
||
| pub fn deserializeReader(reader: anytype) !NetworkIPAddr { | ||
| return NetworkIPAddr{ | ||
| .time = try reader.readInt(u32, .little), | ||
| .address = try NetworkAddress.deserializeReader(reader), | ||
| }; | ||
| } | ||
| }; | ||
|
|
||
| /// AddrMessage represents the "addr" message | ||
| /// | ||
| /// https://developer.bitcoin.org/reference/p2p_networking.html#addr | ||
| pub const AddrMessage = struct { | ||
| ip_addresses: []NetworkIPAddr, | ||
|
|
||
| const Self = @This(); | ||
|
|
||
| pub inline fn name() *const [12]u8 { | ||
| return protocol.CommandNames.ADDR ++ [_]u8{0} ** 8; | ||
| } | ||
|
|
||
| /// Returns the message checksum | ||
| /// | ||
| /// Computed as `Sha256(Sha256(self.serialize()))[0..4]` | ||
| pub fn checksum(self: *const AddrMessage) [4]u8 { | ||
| return genericChecksum(self); | ||
| } | ||
|
|
||
| /// Free the `user_agent` if there is one | ||
| pub fn deinit(self: AddrMessage, allocator: std.mem.Allocator) void { | ||
| allocator.free(self.ip_addresses); | ||
| } | ||
|
|
||
| /// Serialize the message as bytes and write them to the Writer. | ||
| /// | ||
| /// `w` should be a valid `Writer`. | ||
| pub fn serializeToWriter(self: *const AddrMessage, w: anytype) !void { | ||
| try CompactSizeUint.new(self.ip_addresses.len).encodeToWriter(w); | ||
| for (self.ip_addresses) |*addr| { | ||
| try addr.serializeToWriter(w); | ||
| } | ||
| } | ||
|
|
||
| /// Serialize a message as bytes and return them. | ||
| pub fn serialize(self: *const AddrMessage, allocator: std.mem.Allocator) ![]u8 { | ||
| return genericSerialize(self, allocator); | ||
| } | ||
|
|
||
| /// Deserialize a Reader bytes as a `AddrMessage` | ||
| pub fn deserializeReader(allocator: std.mem.Allocator, r: anytype) !AddrMessage { | ||
| const ip_address_count = try CompactSizeUint.decodeReader(r); | ||
|
|
||
| // Allocate space for IP addresses | ||
| const ip_addresses = try allocator.alloc(NetworkIPAddr, ip_address_count.value()); | ||
| errdefer allocator.free(ip_addresses); | ||
|
|
||
| for (ip_addresses) |*ip_address| { | ||
| ip_address.* = try NetworkIPAddr.deserializeReader(r); | ||
| } | ||
|
|
||
| return AddrMessage{ | ||
| .ip_addresses = ip_addresses, | ||
| }; | ||
| } | ||
|
|
||
| /// Deserialize bytes into a `AddrMessage` | ||
| pub fn deserializeSlice(allocator: std.mem.Allocator, bytes: []const u8) !AddrMessage { | ||
| return genericDeserializeSlice(Self, allocator, bytes); | ||
| } | ||
|
|
||
| pub fn hintSerializedLen(self: AddrMessage) usize { | ||
| // 4 + 8 + 16 + 2 | ||
| const fixed_length_per_ip = 30; | ||
| const count = CompactSizeUint.new(self.ip_addresses.len).hint_encoded_len(); | ||
| return count + self.ip_addresses.len * fixed_length_per_ip; | ||
| } | ||
|
|
||
| pub fn eql(self: *const AddrMessage, other: *const AddrMessage) bool { | ||
| if (self.ip_addresses.len != other.ip_addresses.len) return false; | ||
|
|
||
| const count = @as(usize, self.ip_addresses.len); | ||
| for (0..count) |i| { | ||
| if (!self.ip_addresses[i].eql(&other.ip_addresses[i])) return false; | ||
| } | ||
|
|
||
| return true; | ||
| } | ||
| }; | ||
|
|
||
| // TESTS | ||
| test "ok_full_flow_AddrMessage" { | ||
| const test_allocator = std.testing.allocator; | ||
| { | ||
| const ip_addresses = try test_allocator.alloc(NetworkIPAddr, 1); | ||
| defer test_allocator.free(ip_addresses); | ||
|
|
||
| ip_addresses[0] = NetworkIPAddr{ .time = 1414012889, .address = NetworkAddress{ | ||
| .services = 1, | ||
| .ip = [16]u8{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 192, 0, 2, 51 }, | ||
| .port = 8080, | ||
| } }; | ||
| const am = AddrMessage{ | ||
| .ip_addresses = ip_addresses[0..], | ||
| }; | ||
|
|
||
| // Serialize | ||
| const payload = try am.serialize(test_allocator); | ||
| defer test_allocator.free(payload); | ||
|
|
||
| // Deserialize | ||
| const deserialized_am = try AddrMessage.deserializeSlice(test_allocator, payload); | ||
|
|
||
| // Test equality | ||
| try std.testing.expect(am.eql(&deserialized_am)); | ||
|
|
||
| defer test_allocator.free(deserialized_am.ip_addresses); | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.