File UInt128.swift has 502 lines of code (exceeds 250 allowed). Consider refactoring.

Open

public enum UInt128Errors : Error {
    /// Input cannot be converted to a UInt128 value.
    case invalidString
}

File DNSMessage.swift has 321 lines of code (exceeds 250 allowed). Consider refactoring.

Open

import Foundation
import CocoaLumberjackSwift

open class DNSMessage {
    //    var sourceAddress: IPv4Address?

File ProtocolObfuscater.swift has 304 lines of code (exceeds 250 allowed). Consider refactoring.

Open

import Foundation

extension ShadowsocksAdapter {
    public struct ProtocolObfuscater {
        public class Factory {

Function didRead has 82 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    override public func didRead(data: Data, from: RawTCPSocketProtocol) {
        super.didRead(data: data, from: from)

        switch readStatus {
        case .forwarding:

Function multipliedFullWidth has 75 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public func multipliedFullWidth(by other: UInt128) -> (high: UInt128, low: UInt128.Magnitude) {
        // Bit mask that facilitates masking the lower 32 bits of a 64 bit UInt.
        let lower32 = UInt64(UInt32.max)
        
        // Decompose lhs into an array of 4, 32 significant bit UInt64s.

Function checkReadData has a Cognitive Complexity of 21 (exceeds 5 allowed). Consider refactoring.

Open

    fileprivate func checkReadData() {
        if pendingReadData.count > 0 {
            queueCall {
                guard self.reading else {
                    // no queued read request

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Function spec has a Cognitive Complexity of 21 (exceeds 5 allowed). Consider refactoring.

Open

    override func spec() {
        let cidrWrongSamples = [
            ("127.0.0.132", IPRangeError.invalidCIDRFormat),
            ("13.1242.1241.1/3", IPRangeError.invalidCIDRFormat),
            ("123.122.33.21/35", IPRangeError.invalidMask),

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Function spec has 66 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    override func spec() {
        let cidrWrongSamples = [
            ("127.0.0.132", IPRangeError.invalidCIDRFormat),
            ("13.1242.1241.1/3", IPRangeError.invalidCIDRFormat),
            ("123.122.33.21/35", IPRangeError.invalidMask),

Function parseShadowsocksAdapterFactory has a Cognitive Complexity of 19 (exceeds 5 allowed). Consider refactoring.

Open

    static func parseShadowsocksAdapterFactory(_ config: Yaml) throws -> ShadowsocksAdapterFactory {
        guard let host = config["host"].string else {
            throw ConfigurationParserError.adapterParsingError(errorInfo: "Host (host) is required.")
        }

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Function parseShadowsocksAdapterFactory has 60 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    static func parseShadowsocksAdapterFactory(_ config: Yaml) throws -> ShadowsocksAdapterFactory {
        guard let host = config["host"].string else {
            throw ConfigurationParserError.adapterParsingError(errorInfo: "Host (host) is required.")
        }

Function handleStatus0 has 56 lines of code (exceeds 25 allowed). Consider refactoring.

Open

            private func handleStatus0() {
                status = 1

                var outData = Data()
                outData.append(contentsOf: [0x03, 0x03])

Function didRead has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.

Open

    override public func didRead(data: Data, from: RawTCPSocketProtocol) {
        super.didRead(data: data, from: from)

        switch readStatus {
        case .forwarding:

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Function input has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.

Open

    func input(_ data: Data) throws -> Result {
        switch nextAction {
        case .readHeader:
            let header: HTTPHeader
            do {

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Function didRead has 45 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public override func didRead(data: Data, from socket: RawTCPSocketProtocol) {
        super.didRead(data: data, from: socket)

        switch internalStatus {
        case .readingMethodResponse:

Function output has 41 lines of code (exceeds 25 allowed). Consider refactoring.

Open

            public override func output(data: Data) {
                let fullBlockCount = data.count / DATA_BLOCK_SIZE
                var outputSize = fullBlockCount * (DATA_BLOCK_SIZE + 10 + 2)
                if data.count > fullBlockCount * DATA_BLOCK_SIZE {
                    outputSize += data.count - fullBlockCount * DATA_BLOCK_SIZE + 10 + 2

Function readPackets has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring.

Open

    fileprivate func readPackets() {
        packetFlow?.readPackets { packets, versions in
            QueueFactory.getQueue().async {
                for (i, packet) in packets.enumerated() {
                    for stack in self.stacks {

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Function mask has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring.

Open

    func mask(baseIP: IPAddress) -> (IPAddress, IPAddress)? {
        switch (self, baseIP.address) {
        case (.IPv4(var m), .IPv4(let addr)):
            guard m <= 32 else {
                return nil

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Function update has 37 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    open func update(_ data: inout Data) {
        guard data.count > 0 else {
            return
        }

Function input has 37 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    func input(_ data: Data) throws -> Result {
        switch nextAction {
        case .readHeader:
            let header: HTTPHeader
            do {

Function mask has 36 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    func mask(baseIP: IPAddress) -> (IPAddress, IPAddress)? {
        switch (self, baseIP.address) {
        case (.IPv4(var m), .IPv4(let addr)):
            guard m <= 32 else {
                return nil