🐛 Fix node connection & sync

SwiftChain.xcodeproj/project.pbxproj

@@ -7,9 +7,27 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
-		57BA298C2CF77907009E4448 /* CryptoSwift in Frameworks */ = {isa = PBXBuildFile; productRef = 57BA298B2CF77907009E4448 /* CryptoSwift */; };
+		576693F62DC8EDCE0024463C /* CryptoSwift in Frameworks */ = {isa = PBXBuildFile; productRef = 576693F52DC8EDCE0024463C /* CryptoSwift */; };
+		57B6CA1A2CFDFA39009F401F /* SwiftChainCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 57B6CA102CFDFA39009F401F /* SwiftChainCore.framework */; };
 /* End PBXBuildFile section */
 
+/* Begin PBXContainerItemProxy section */
+		57B6CA1B2CFDFA39009F401F /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 57BA29782CF778F5009E4448 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 57B6CA0F2CFDFA39009F401F;
+			remoteInfo = SwiftChainCore;
+		};
+		57B6CA392CFDFB1F009F401F /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 57BA29782CF778F5009E4448 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 57B6CA0F2CFDFA39009F401F;
+			remoteInfo = SwiftChainCore;
+		};
+/* End PBXContainerItemProxy section */
+
 /* Begin PBXCopyFilesBuildPhase section */
 		57BA297E2CF778F5009E4448 /* CopyFiles */ = {
 			isa = PBXCopyFilesBuildPhase;
@@ -23,10 +41,35 @@
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
+		57B6CA102CFDFA39009F401F /* SwiftChainCore.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = SwiftChainCore.framework; sourceTree = BUILT_PRODUCTS_DIR; };
+		57B6CA192CFDFA39009F401F /* SwiftChainCoreTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = SwiftChainCoreTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 		57BA29802CF778F5009E4448 /* SwiftChain */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = SwiftChain; sourceTree = BUILT_PRODUCTS_DIR; };
 /* End PBXFileReference section */
 
+/* Begin PBXFileSystemSynchronizedBuildFileExceptionSet section */
+		57B6CA252CFDFA39009F401F /* Exceptions for "SwiftChainCore" folder in "SwiftChainCore" target */ = {
+			isa = PBXFileSystemSynchronizedBuildFileExceptionSet;
+			publicHeaders = (
+				SwiftChainCore.h,
+			);
+			target = 57B6CA0F2CFDFA39009F401F /* SwiftChainCore */;
+		};
+/* End PBXFileSystemSynchronizedBuildFileExceptionSet section */
+
 /* Begin PBXFileSystemSynchronizedRootGroup section */
+		57B6CA112CFDFA39009F401F /* SwiftChainCore */ = {
+			isa = PBXFileSystemSynchronizedRootGroup;
+			exceptions = (
+				57B6CA252CFDFA39009F401F /* Exceptions for "SwiftChainCore" folder in "SwiftChainCore" target */,
+			);
+			path = SwiftChainCore;
+			sourceTree = "<group>";
+		};
+		57B6CA1D2CFDFA39009F401F /* SwiftChainCoreTests */ = {
+			isa = PBXFileSystemSynchronizedRootGroup;
+			path = SwiftChainCoreTests;
+			sourceTree = "<group>";
+		};
 		57BA29822CF778F5009E4448 /* SwiftChain */ = {
 			isa = PBXFileSystemSynchronizedRootGroup;
 			path = SwiftChain;
@@ -35,11 +78,26 @@
 /* End PBXFileSystemSynchronizedRootGroup section */
 
 /* Begin PBXFrameworksBuildPhase section */
+		57B6CA0D2CFDFA39009F401F /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				576693F62DC8EDCE0024463C /* CryptoSwift in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		57B6CA162CFDFA39009F401F /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				57B6CA1A2CFDFA39009F401F /* SwiftChainCore.framework in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		57BA297D2CF778F5009E4448 /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				57BA298C2CF77907009E4448 /* CryptoSwift in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -50,6 +108,8 @@
 			isa = PBXGroup;
 			children = (
 				57BA29822CF778F5009E4448 /* SwiftChain */,
+				57B6CA112CFDFA39009F401F /* SwiftChainCore */,
+				57B6CA1D2CFDFA39009F401F /* SwiftChainCoreTests */,
 				57BA29812CF778F5009E4448 /* Products */,
 			);
 			sourceTree = "<group>";
@@ -58,13 +118,73 @@
 			isa = PBXGroup;
 			children = (
 				57BA29802CF778F5009E4448 /* SwiftChain */,
+				57B6CA102CFDFA39009F401F /* SwiftChainCore.framework */,
+				57B6CA192CFDFA39009F401F /* SwiftChainCoreTests.xctest */,
 			);
 			name = Products;
 			sourceTree = "<group>";
 		};
 /* End PBXGroup section */
 
+/* Begin PBXHeadersBuildPhase section */
+		57B6CA0B2CFDFA39009F401F /* Headers */ = {
+			isa = PBXHeadersBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXHeadersBuildPhase section */
+
 /* Begin PBXNativeTarget section */
+		57B6CA0F2CFDFA39009F401F /* SwiftChainCore */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 57B6CA262CFDFA39009F401F /* Build configuration list for PBXNativeTarget "SwiftChainCore" */;
+			buildPhases = (
+				57B6CA0B2CFDFA39009F401F /* Headers */,
+				57B6CA0C2CFDFA39009F401F /* Sources */,
+				57B6CA0D2CFDFA39009F401F /* Frameworks */,
+				57B6CA0E2CFDFA39009F401F /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+				5766942C2DC8FBA30024463C /* PBXTargetDependency */,
+			);
+			fileSystemSynchronizedGroups = (
+				57B6CA112CFDFA39009F401F /* SwiftChainCore */,
+			);
+			name = SwiftChainCore;
+			packageProductDependencies = (
+				576693F52DC8EDCE0024463C /* CryptoSwift */,
+			);
+			productName = SwiftChainCore;
+			productReference = 57B6CA102CFDFA39009F401F /* SwiftChainCore.framework */;
+			productType = "com.apple.product-type.framework";
+		};
+		57B6CA182CFDFA39009F401F /* SwiftChainCoreTests */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 57B6CA272CFDFA39009F401F /* Build configuration list for PBXNativeTarget "SwiftChainCoreTests" */;
+			buildPhases = (
+				57B6CA152CFDFA39009F401F /* Sources */,
+				57B6CA162CFDFA39009F401F /* Frameworks */,
+				57B6CA172CFDFA39009F401F /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+				57B6CA1C2CFDFA39009F401F /* PBXTargetDependency */,
+			);
+			fileSystemSynchronizedGroups = (
+				57B6CA1D2CFDFA39009F401F /* SwiftChainCoreTests */,
+			);
+			name = SwiftChainCoreTests;
+			packageProductDependencies = (
+			);
+			productName = SwiftChainCoreTests;
+			productReference = 57B6CA192CFDFA39009F401F /* SwiftChainCoreTests.xctest */;
+			productType = "com.apple.product-type.bundle.unit-test";
+		};
 		57BA297F2CF778F5009E4448 /* SwiftChain */ = {
 			isa = PBXNativeTarget;
 			buildConfigurationList = 57BA29872CF778F5009E4448 /* Build configuration list for PBXNativeTarget "SwiftChain" */;
@@ -76,6 +196,7 @@
 			buildRules = (
 			);
 			dependencies = (
+				57B6CA3A2CFDFB1F009F401F /* PBXTargetDependency */,
 			);
 			fileSystemSynchronizedGroups = (
 				57BA29822CF778F5009E4448 /* SwiftChain */,
@@ -98,6 +219,12 @@
 				LastSwiftUpdateCheck = 1610;
 				LastUpgradeCheck = 1610;
 				TargetAttributes = {
+					57B6CA0F2CFDFA39009F401F = {
+						CreatedOnToolsVersion = 16.1;
+					};
+					57B6CA182CFDFA39009F401F = {
+						CreatedOnToolsVersion = 16.1;
+					};
 					57BA297F2CF778F5009E4448 = {
 						CreatedOnToolsVersion = 16.1;
 					};
@@ -121,11 +248,44 @@
 			projectRoot = "";
 			targets = (
 				57BA297F2CF778F5009E4448 /* SwiftChain */,
+				57B6CA0F2CFDFA39009F401F /* SwiftChainCore */,
+				57B6CA182CFDFA39009F401F /* SwiftChainCoreTests */,
 			);
 		};
 /* End PBXProject section */
 
+/* Begin PBXResourcesBuildPhase section */
+		57B6CA0E2CFDFA39009F401F /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		57B6CA172CFDFA39009F401F /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXResourcesBuildPhase section */
+
 /* Begin PBXSourcesBuildPhase section */
+		57B6CA0C2CFDFA39009F401F /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		57B6CA152CFDFA39009F401F /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		57BA297C2CF778F5009E4448 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -135,7 +295,156 @@
 		};
 /* End PBXSourcesBuildPhase section */
 
+/* Begin PBXTargetDependency section */
+		5766942C2DC8FBA30024463C /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			productRef = 5766942B2DC8FBA30024463C /* CryptoSwift */;
+		};
+		57B6CA1C2CFDFA39009F401F /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 57B6CA0F2CFDFA39009F401F /* SwiftChainCore */;
+			targetProxy = 57B6CA1B2CFDFA39009F401F /* PBXContainerItemProxy */;
+		};
+		57B6CA3A2CFDFB1F009F401F /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 57B6CA0F2CFDFA39009F401F /* SwiftChainCore */;
+			targetProxy = 57B6CA392CFDFB1F009F401F /* PBXContainerItemProxy */;
+		};
+/* End PBXTargetDependency section */
+
 /* Begin XCBuildConfiguration section */
+		57B6CA212CFDFA39009F401F /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
+				BUILD_LIBRARY_FOR_DISTRIBUTION = YES;
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEFINES_MODULE = YES;
+				DEVELOPMENT_TEAM = WVH3Y23X7X;
+				DYLIB_COMPATIBILITY_VERSION = 1;
+				DYLIB_CURRENT_VERSION = 1;
+				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				ENABLE_MODULE_VERIFIER = YES;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_KEY_NSHumanReadableCopyright = "";
+				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 18.1;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"@executable_path/Frameworks",
+					"@loader_path/Frameworks",
+				);
+				"LD_RUNPATH_SEARCH_PATHS[sdk=macosx*]" = (
+					"@executable_path/../Frameworks",
+					"@loader_path/Frameworks",
+				);
+				MACOSX_DEPLOYMENT_TARGET = 15.1;
+				MARKETING_VERSION = 1.0;
+				MODULE_VERIFIER_SUPPORTED_LANGUAGES = "objective-c objective-c++";
+				MODULE_VERIFIER_SUPPORTED_LANGUAGE_STANDARDS = "gnu17 gnu++20";
+				PRODUCT_BUNDLE_IDENTIFIER = com.bodinaud.SwiftChainCore;
+				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
+				SDKROOT = auto;
+				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator macosx xros xrsimulator";
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_INSTALL_OBJC_HEADER = NO;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
+				VERSIONING_SYSTEM = "apple-generic";
+				VERSION_INFO_PREFIX = "";
+				XROS_DEPLOYMENT_TARGET = 2.1;
+			};
+			name = Debug;
+		};
+		57B6CA222CFDFA39009F401F /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
+				BUILD_LIBRARY_FOR_DISTRIBUTION = YES;
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEFINES_MODULE = YES;
+				DEVELOPMENT_TEAM = WVH3Y23X7X;
+				DYLIB_COMPATIBILITY_VERSION = 1;
+				DYLIB_CURRENT_VERSION = 1;
+				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				ENABLE_MODULE_VERIFIER = YES;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_KEY_NSHumanReadableCopyright = "";
+				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 18.1;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"@executable_path/Frameworks",
+					"@loader_path/Frameworks",
+				);
+				"LD_RUNPATH_SEARCH_PATHS[sdk=macosx*]" = (
+					"@executable_path/../Frameworks",
+					"@loader_path/Frameworks",
+				);
+				MACOSX_DEPLOYMENT_TARGET = 15.1;
+				MARKETING_VERSION = 1.0;
+				MODULE_VERIFIER_SUPPORTED_LANGUAGES = "objective-c objective-c++";
+				MODULE_VERIFIER_SUPPORTED_LANGUAGE_STANDARDS = "gnu17 gnu++20";
+				PRODUCT_BUNDLE_IDENTIFIER = com.bodinaud.SwiftChainCore;
+				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
+				SDKROOT = auto;
+				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator macosx xros xrsimulator";
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_INSTALL_OBJC_HEADER = NO;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
+				VERSIONING_SYSTEM = "apple-generic";
+				VERSION_INFO_PREFIX = "";
+				XROS_DEPLOYMENT_TARGET = 2.1;
+			};
+			name = Release;
+		};
+		57B6CA232CFDFA39009F401F /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = WVH3Y23X7X;
+				GENERATE_INFOPLIST_FILE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 18.1;
+				MACOSX_DEPLOYMENT_TARGET = 15.1;
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = com.bodinaud.SwiftChainCoreTests;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SDKROOT = auto;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator macosx xros xrsimulator";
+				SWIFT_EMIT_LOC_STRINGS = NO;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
+				XROS_DEPLOYMENT_TARGET = 2.1;
+			};
+			name = Debug;
+		};
+		57B6CA242CFDFA39009F401F /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = WVH3Y23X7X;
+				GENERATE_INFOPLIST_FILE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 18.1;
+				MACOSX_DEPLOYMENT_TARGET = 15.1;
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = com.bodinaud.SwiftChainCoreTests;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SDKROOT = auto;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator macosx xros xrsimulator";
+				SWIFT_EMIT_LOC_STRINGS = NO;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
+				XROS_DEPLOYMENT_TARGET = 2.1;
+			};
+			name = Release;
+		};
 		57BA29852CF778F5009E4448 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
@@ -279,6 +588,24 @@
 /* End XCBuildConfiguration section */
 
 /* Begin XCConfigurationList section */
+		57B6CA262CFDFA39009F401F /* Build configuration list for PBXNativeTarget "SwiftChainCore" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				57B6CA212CFDFA39009F401F /* Debug */,
+				57B6CA222CFDFA39009F401F /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		57B6CA272CFDFA39009F401F /* Build configuration list for PBXNativeTarget "SwiftChainCoreTests" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				57B6CA232CFDFA39009F401F /* Debug */,
+				57B6CA242CFDFA39009F401F /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 		57BA297B2CF778F5009E4448 /* Build configuration list for PBXProject "SwiftChain" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
@@ -311,6 +638,15 @@
 /* End XCRemoteSwiftPackageReference section */
 
 /* Begin XCSwiftPackageProductDependency section */
+		576693F52DC8EDCE0024463C /* CryptoSwift */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = CryptoSwift;
+		};
+		5766942B2DC8FBA30024463C /* CryptoSwift */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = 57BA298A2CF77907009E4448 /* XCRemoteSwiftPackageReference "CryptoSwift" */;
+			productName = CryptoSwift;
+		};
 		57BA298B2CF77907009E4448 /* CryptoSwift */ = {
 			isa = XCSwiftPackageProductDependency;
 			package = 57BA298A2CF77907009E4448 /* XCRemoteSwiftPackageReference "CryptoSwift" */;

SwiftChain.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -6,8 +6,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/krzyzanowskim/CryptoSwift.git",
       "state" : {
-        "revision" : "678d442c6f7828def400a70ae15968aef67ef52d",
-        "version" : "1.8.3"
+        "revision" : "729e01bc9b9dab466ac85f21fb9ee2bc1c61b258",
+        "version" : "1.8.4"
       }
     }
   ],

SwiftChain.xcodeproj/xcuserdata/victor.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -5,6 +5,11 @@
 	<key>SchemeUserState</key>
 	<dict>
 		<key>SwiftChain.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>1</integer>
+		</dict>
+		<key>SwiftChainCore.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
 			<integer>0</integer>

SwiftChain/Models/Block.swift

@@ -1,59 +0,0 @@
-//
-//  Block.swift
-//  Blockchain
-//
-//  Created by Victor BODINAUD on 27/02/2020.
-//  Copyright © 2020 Victor BODINAUD. All rights reserved.
-//
-
-import Foundation
-import CryptoSwift
-
-class Block {
-    var hash: String
-    var data: String
-    var previousHash: String
-    var index: Int
-    var nonce: Int
-    var timestamp: Int
-    
-    /**
-        Initialize a block with the provided parts and specifications.
-     
-        - parameters:
-            - hash: The hash of the block
-            - data: The data of the block
-            - previousHash: The hash of the previous block
-            - index: The index of the block
-            - nonce: The nonce of the block
-            - timestamp: The timestamp of the block
-     
-        - returns: A beautiful new block for the blockchain.
-     */
-    init(hash: String = "", data: String = "", previousHash: String = "", index: Int = 0, nonce: Int = 0, timestamp: Int = 0) {
-        self.data = data
-        self.previousHash = previousHash
-        self.index = index
-        self.nonce = nonce
-        self.timestamp = timestamp
-        self.hash = hash
-    }
-    
-    /**
-        Generate the hash of the block.
-     
-        - returns: The hash of the block
-     */
-    func generateHash() -> String {
-        return data.sha256()
-    }
-    
-    /**
-        Generate the timestamp of the block
-     
-        - returns: The timestamp of the block
-     */
-    func generateTimestamp() -> Int {
-        return Int(Date().timeIntervalSince1970)
-    }
-}

SwiftChain/Models/Blockchain.swift

@@ -1,88 +0,0 @@
-//
-//  Blockchain.swift
-//  Blockchain
-//
-//  Created by Victor BODINAUD on 27/02/2020.
-//  Copyright © 2020 Victor BODINAUD. All rights reserved.
-//
-
-import Foundation
-
-class Blockchain {
-    var chain = [Block]()
-    
-    /**
-        Initialize the first block of the blockchain.
-        
-        - Parameters:
-            - data: The datas of the block
-     */
-    func createGenesisBlock(data: String) {
-        let genesisBlock = Block()
-        genesisBlock.data = data
-        genesisBlock.previousHash = "0000"
-        genesisBlock.index = 0
-        genesisBlock.nonce = 0
-        genesisBlock.timestamp = genesisBlock.generateTimestamp()
-        genesisBlock.hash = genesisBlock.generateHash()
-        chain.append(genesisBlock)
-        print("Genesis block created -- hash: \(genesisBlock.hash)")
-    }
-    
-    /**
-        Initialize a new block of the blockchain.
-     
-        - Parameters:
-            - data: The datas of the block
-     */
-    func createBlock(data: String) {
-        let newBlock = Block()
-        newBlock.data = data
-        newBlock.previousHash = chain.last!.hash
-        newBlock.index = chain.count
-        newBlock.nonce = 0
-        newBlock.timestamp = newBlock.generateTimestamp()
-        newBlock.hash = newBlock.generateHash()
-        chain.append(newBlock)
-        
-        print("-- Block \(newBlock.index) created --\n hash: \(newBlock.hash)\n previous hash: \(newBlock.previousHash)\n data: \(newBlock.data)")
-    }
-    
-    /**
-        Insert a corrupted block in the blockhain.
-        (for testing purpose)
-     */
-    func insertCorruptedBlock() {
-        let newCorruptedBlock = Block()
-        newCorruptedBlock.data = "Corrupted block"
-        newCorruptedBlock.previousHash = "1234567890"
-        newCorruptedBlock.index = chain.count
-        newCorruptedBlock.nonce = 0
-        newCorruptedBlock.timestamp = newCorruptedBlock.generateTimestamp()
-        newCorruptedBlock.hash = newCorruptedBlock.generateHash()
-        chain.append(newCorruptedBlock)
-        
-        print("-- Corrupted block \(newCorruptedBlock.index) created --\n hash: \(newCorruptedBlock.hash)\n previous hash: \(newCorruptedBlock.previousHash)\n data: \(newCorruptedBlock.data)")
-    }
-    
-    /**
-        Check validity of the blockchain.
-     */
-    func chainValidity() {
-        var isChainValid = true
-        var corruptedBlock = Block()
-        
-        for i in 1...chain.count-1 {
-            if chain[i].previousHash != chain[i-1].hash {
-                isChainValid = false
-                corruptedBlock = chain[i]
-            }
-        }
-        
-        print("Chain is valid : \(isChainValid)")
-        
-        if !isChainValid {
-            print("Corrupted block is : \(corruptedBlock.index)")
-        }
-    }
-}

SwiftChain/Models/Transaction.swift

@@ -1,22 +0,0 @@
-//
-//  File.swift
-//  
-//
-//  Created by Victor BODINAUD on 31/03/2021.
-//
-
-import Foundation
-
-class Transaction {
-    var sender: String
-    var receiver: String
-    var amount: Int
-    var type: String
-    
-    init(sender: String, receiver: String, amount: Int, type: String) {
-        self.sender = sender
-        self.receiver = receiver
-        self.amount = amount
-        self.type = type
-    }
-}

SwiftChain/main.swift

@@ -7,38 +7,168 @@
 //
 
 import Foundation
+import SwiftChainCore
+
+// Create two nodes on different ports
+let node1 = Node(port: 8333)
+let node2 = Node(port: 8334)
+
+// Track which node is active
+var activeNode = node1
+var activeNodeName = "Node 1"
 
-let blockchain = Blockchain()
 var command: String?
+var currentMinerAddress = "MINER1"
+var wallets: [String: Wallet] = [:]
 
-blockchain.createGenesisBlock(data: "")
+// Connect nodes to each other (add after node initialization)
+node1.connectToPeer(host: "localhost", port: 8334)  // Connect to node2
+node2.connectToPeer(host: "localhost", port: 8333)  // Connect to node1
+
+print("""
+Blockchain CLI - Commandes disponibles:
+- createwallet : Créer un nouveau wallet
+- listwallet : Liste des wallets
+- mine : Miner un nouveau bloc
+- send : Envoyer des tokens
+- balance : Voir le solde d'une adresse
+- pending : Voir les transactions en attente
+- validity : Vérifier la validité de la chaîne
+- setminer : Changer l'adresse du mineur
+- connect <host> : Se connecter à un pair
+- peers : Liste des pairs connectés
+- mempool : État du mempool
+- switchnode : Basculer entre Node 1 et Node 2
+- exit : Quitter
+
+Node actif: \(activeNodeName)
+""")
 
 repeat {
-    print("Enter command:")
-    command = readLine()
-    
-    // Create a new block
-    if command == "create" {
-        print("data for the new block:")
-        let data = readLine()
-        blockchain.createBlock(data: data ?? "")
-    }
-    
-    // Create a lot of blocks
-    if command == "spam" {
-        for _ in 1...1000 {
-            blockchain.createBlock(data: "\((blockchain.chain.last?.index ?? 0)+1)")
+    LogManager.log("\nEntrer une commande:", level: .info)
+    command = readLine()?.lowercased()
+
+    switch command {
+    case "connect":
+        LogManager.log("Entrez l'adresse du pair (ex: 192.168.1.100):", level: .info)
+        if let host = readLine() {
+            activeNode.connectToPeer(host: host)
         }
+
+    case "peers":
+        activeNode.listPeers()
+
+    case "mine":
+        if let _ = activeNode.mineBlock(minerAddress: currentMinerAddress) {
+            LogManager.log("Bloc miné avec succès. Récompense envoyée à \(currentMinerAddress)", level: .success)
+            LogManager.log("Nouveau solde: \(activeNode.getBalance(currentMinerAddress))", level: .info)
+        } else {
+            LogManager.log("Échec du minage", level: .error)
+        }
+
+    case "balance":
+        LogManager.log("Entrer l'adresse:", level: .info)
+        if let address = readLine() {
+            let balance = activeNode.getBalance(address)
+            LogManager.log("Solde de \(address): \(balance)", level: .info)
+        }
+
+    case "setminer":
+        LogManager.log("Nouvelle adresse du mineur:", level: .info)
+        if let address = readLine() {
+            currentMinerAddress = address
+            LogManager.log("Adresse du mineur mise à jour: \(currentMinerAddress)", level: .success)
+        }
+
+    case "pending":
+        let transactions = activeNode.getPendingTransactions()
+        LogManager.log("Transactions en attente: \(transactions.count)", level: .info)
+        for (index, tx) in transactions.enumerated() {
+            LogManager.log("""
+            \(index + 1). De: \(tx.sender)
+               À: \(tx.receiver)
+               Montant: \(tx.amount)
+               Type: \(tx.type)
+            """, level: .info)
+        }
+
+    case "validity":
+        let isValid = activeNode.isChainValid()
+        LogManager.log("Chaîne valide: \(isValid)", level: .success)
+
+    case "exit":
+        LogManager.log("Au revoir!", level: .info)
+
+    case "createwallet":
+        let wallet = Wallet()
+        wallets[wallet.address] = wallet
+        LogManager.log("Nouveau wallet créé!", level: .success)
+        LogManager.log("Adresse: \(wallet.address)", level: .success)
+
+    case "listwallet":
+        LogManager.log("\nWallets disponibles:", level: .info)
+        for (address, _) in wallets {
+            LogManager.log("- \(address) (Solde: \(activeNode.getBalance(address)))", level: .info)
+        }
+
+    case "send":
+        LogManager.log("Votre adresse (wallet):", level: .info)
+        guard let senderAddress = readLine(),
+              let wallet = wallets[senderAddress]
+        else {
+            LogManager.log("Wallet non trouvé", level: .error)
+            break
+        }
+
+        LogManager.log("Adresse du destinataire:", level: .info)
+        guard let receiverAddress = readLine() else {
+            LogManager.log("Adresse du destinataire invalide", level: .error)
+            break
+        }
+
+        print("Montant:")
+        guard let amountStr = readLine(),
+              let amount = Int(amountStr),
+              amount > 0
+        else {
+            LogManager.log("Montant invalide", level: .error)
+            break
+        }
+
+        let transaction = Transaction(
+            sender: senderAddress,
+            receiver: receiverAddress,
+            amount: amount,
+            type: "TRANSFER"
+        )
+
+        transaction.senderPublicKey = wallet.getPublicKeyData()
+        if let signature = wallet.signTransaction(transaction) {
+            transaction.signature = signature
+            if activeNode.submitTransaction(transaction) {
+                LogManager.log("Transaction signée et propagée au réseau!", level: .success)
+            } else {
+                LogManager.log("Erreur lors de l'envoi de la transaction", level: .error)
+            }
+        } else {
+            LogManager.log("Erreur lors de la signature de la transaction", level: .error)
+        }
+
+    case "mempool":
+        activeNode.printMemPoolStatus()
+
+    case "switchnode":
+        if activeNode === node1 {
+            activeNode = node2
+            activeNodeName = "Node 2"
+        } else {
+            activeNode = node1
+            activeNodeName = "Node 1"
+        }
+        LogManager.log("Node actif: \(activeNodeName)", level: .info)
+
+    default:
+        LogManager.log("Commande inconnue", level: .error)
     }
-    
-    // Check validity of the blockchain
-    if command == "validity" {
-        blockchain.chainValidity()
-    }
-    
-    // Insert a corrupted block
-    if command == "corrupt" {
-        blockchain.insertCorruptedBlock()
-    }
-    
+
 } while command != "exit"

SwiftChainCore/Models/Account.swift

@@ -1,16 +1,16 @@
 //
 //  File.swift
-//  
+//
 //
 //  Created by Victor BODINAUD on 31/03/2021.
 //
 
 import Foundation
 
-class Account {
+public class Account {
     var id: String
     var balance: Int
-    
+
     init(id: String, balance: Int) {
         self.id = id
         self.balance = balance

SwiftChainCore/Models/AccountManager.swift

@@ -0,0 +1,66 @@
+//
+//  AccountManager.swift
+//  SwiftChain
+//
+//  Created by Victor on 27/11/2024.
+//
+
+public class AccountManager {
+    private var accounts: [String: Account] = [:]
+    private let miningReward = 50
+
+    func getAccount(_ address: String) -> Account {
+        if let account = accounts[address] {
+            return account
+        }
+        let newAccount = Account(id: address, balance: 0)
+        accounts[address] = newAccount
+        return newAccount
+    }
+
+    func canProcessTransaction(_ transaction: Transaction) -> Bool {
+        if transaction.type == "MINING_REWARD" {
+            return true
+        }
+
+        let senderAccount = getAccount(transaction.sender)
+        return senderAccount.balance >= transaction.amount
+    }
+
+    func processTransaction(_ transaction: Transaction) -> Bool {
+        if !canProcessTransaction(transaction) {
+            return false
+        }
+
+        if transaction.type == "MINING_REWARD" {
+            let minerAccount = getAccount(transaction.receiver)
+            minerAccount.balance += miningReward
+            return true
+        }
+
+        let senderAccount = getAccount(transaction.sender)
+        let receiverAccount = getAccount(transaction.receiver)
+
+        senderAccount.balance -= transaction.amount
+        receiverAccount.balance += transaction.amount
+
+        return true
+    }
+
+    func getBalance(_ address: String) -> Int {
+        return getAccount(address).balance
+    }
+
+    func processBlock(_ block: Block) -> Bool {
+        let tempAccounts = accounts
+
+        for transaction in block.transactions {
+            if !processTransaction(transaction) {
+                accounts = tempAccounts
+                return false
+            }
+        }
+
+        return true
+    }
+}

SwiftChainCore/Models/Block.swift

@@ -0,0 +1,116 @@
+//
+//  Block.swift
+//  Blockchain
+//
+//  Created by Victor BODINAUD on 27/02/2020.
+//  Copyright © 2020 Victor BODINAUD. All rights reserved.
+//
+
+internal import CryptoSwift
+import Foundation
+
+public class Block: Codable {
+    var hash: String
+    var transactions: [Transaction]
+    var previousHash: String
+    var index: Int
+    var nonce: Int
+    var timestamp: Int
+    var difficulty: Int
+    var miner: String?
+
+    enum CodingKeys: String, CodingKey {
+        case hash, transactions, previousHash, index, nonce, timestamp, difficulty, miner
+    }
+
+    init(hash: String = "", transactions: [Transaction] = [], previousHash: String = "",
+         index: Int = 0, nonce: Int = 0, timestamp: Int = 0, difficulty: Int = 4)
+    {
+        self.hash = hash
+        self.transactions = transactions
+        self.previousHash = previousHash
+        self.index = index
+        self.nonce = nonce
+        self.timestamp = timestamp
+        self.difficulty = difficulty
+    }
+
+    func mineBlock() -> Double {
+        let startTime = Date()
+        let target = String(repeating: "0", count: difficulty)
+
+        print("Mining block \(index) with difficulty \(difficulty)...")
+
+        repeat {
+            nonce += 1
+            hash = generateHash()
+        } while !hash.hasPrefix(target)
+
+        let timeElapsed = Date().timeIntervalSince(startTime)
+        print("Block mined! Nonce: \(nonce), Hash: \(hash)")
+
+        return timeElapsed
+    }
+
+    func isValid() -> Bool {
+        // Vérification de base du hash
+        let target = String(repeating: "0", count: difficulty)
+        if hash != generateHash() || !hash.hasPrefix(target) {
+            print("Block \(index): Invalid hash")
+            return false
+        }
+
+        // Vérifier l'index
+        if index < 0 {
+            print("Block: Invalid index")
+            return false
+        }
+
+        // Vérifier le timestamp
+        let currentTime = Int(Date().timeIntervalSince1970)
+        if timestamp > currentTime + 7200 || timestamp < 1701388800 { // 2h dans le futur max
+            print("Block: Invalid timestamp")
+            return false
+        }
+
+        // Vérifier les transactions
+        for transaction in transactions {
+            if !transaction.isValid() {
+                print("Block: Invalid transaction found")
+                return false
+            }
+
+            // Vérifier qu'il n'y a qu'une seule récompense de minage
+            if transaction.type == "MINING_REWARD" {
+                if transactions.filter({ $0.type == "MINING_REWARD" }).count > 1 {
+                    print("Block: Multiple mining rewards found")
+                    return false
+                }
+            }
+        }
+
+        return true
+    }
+
+    func generateHash() -> String {
+        let txData = transactions.map {
+            "\($0.sender)\($0.receiver)\($0.amount)\($0.type)"
+        }.joined()
+
+        return "\(previousHash)\(txData)\(String(timestamp))\(String(index))\(String(nonce))".sha256()
+    }
+}
+
+// Structure pour suivre la progression du mining
+struct MiningProgress {
+    let hashesChecked: Int
+    let hashRate: Double
+    let elapsedTime: TimeInterval
+    let estimatedTimeRemaining: TimeInterval?
+}
+
+// Erreurs possibles pendant le mining
+enum MiningError: Error {
+    case cancelled
+    case failed(String)
+}

SwiftChainCore/Models/Blockchain.swift

@@ -0,0 +1,127 @@
+//
+//  Blockchain.swift
+//  Blockchain
+//
+//  Created by Victor BODINAUD on 27/02/2020.
+//  Copyright © 2020 Victor BODINAUD. All rights reserved.
+//
+
+import Foundation
+
+public class Blockchain {
+    var chain = [Block]()
+    let minDifficulty = 2
+    let maxDifficulty = 6
+    let targetBlockTime = 10.0 // en secondes
+
+    static let genesisBlock: Block = {
+        let block = Block()
+        block.previousHash = "0000genesis0000"
+        block.index = 0
+        block.timestamp = 1701388800
+        block.difficulty = 4
+        block.nonce = 12345
+        block.hash = "000088c1731bed4996680d2c50ea3d9b573c1507d2d61866c0deff33a7f8cf5e"
+        return block
+    }()
+
+    init() {
+        chain.append(Blockchain.genesisBlock)
+        print("Genesis block initialized -- hash: \(Blockchain.genesisBlock.hash)")
+    }
+
+    func calculateNewDifficulty() -> Int {
+        guard chain.count >= 2 else { return minDifficulty }
+
+        let lastBlock = chain.last!
+        let previousBlock = chain[chain.count - 2]
+        let timeSpent = Double(lastBlock.timestamp - previousBlock.timestamp)
+
+        if timeSpent < targetBlockTime / 2 {
+            return min(lastBlock.difficulty + 1, maxDifficulty)
+        } else if timeSpent > targetBlockTime * 2 {
+            return max(lastBlock.difficulty - 1, minDifficulty)
+        }
+
+        return lastBlock.difficulty
+    }
+
+    func validateChain(_ chain: [Block]) -> Bool {
+        guard let firstBlock = chain.first,
+              firstBlock.hash == Blockchain.genesisBlock.hash
+        else {
+            print("Genesis block mismatch")
+            return false
+        }
+
+        for i in 1..<chain.count {
+            let block = chain[i]
+            let previousBlock = chain[i - 1]
+
+            if block.previousHash != previousBlock.hash {
+                print("Invalid chain at block \(i): incorrect previous hash")
+                return false
+            }
+
+            if !block.isValid() {
+                print("Invalid chain at block \(i): invalid block hash")
+                return false
+            }
+        }
+
+        return true
+    }
+
+    func validateChainTotally(_ chain: [Block]) -> Bool {
+        // Vérifier le genesis block
+        guard let firstBlock = chain.first,
+              firstBlock.hash == Blockchain.genesisBlock.hash
+        else {
+            print("Chain: Invalid genesis block")
+            return false
+        }
+
+        // Vérifier la séquence des blocs
+        for i in 1..<chain.count {
+            let block = chain[i]
+            let previousBlock = chain[i - 1]
+
+            // Vérifier le chaînage
+            if block.previousHash != previousBlock.hash {
+                print("Chain: Invalid block sequence at height \(i)")
+                return false
+            }
+
+            // Vérifier l'index
+            if block.index != i {
+                print("Chain: Invalid block index at height \(i)")
+                return false
+            }
+
+            // Vérifier la chronologie
+            if block.timestamp <= previousBlock.timestamp {
+                print("Chain: Invalid timestamp at height \(i)")
+                return false
+            }
+
+            // Vérifier la difficulté
+            let expectedDifficulty = calculateExpectedDifficulty(at: i, chain: chain)
+            if block.difficulty != expectedDifficulty {
+                print("Chain: Invalid difficulty at height \(i)")
+                return false
+            }
+
+            // Vérifier le bloc lui-même
+            if !block.isValid() {
+                print("Chain: Invalid block at height \(i)")
+                return false
+            }
+        }
+
+        return true
+    }
+
+    private func calculateExpectedDifficulty(at index: Int, chain: [Block]) -> Int {
+        return chain[index].difficulty
+    }
+}

SwiftChainCore/Models/LogManager.swift

@@ -0,0 +1,38 @@
+//
+//  LogManager.swift
+//  SwiftChain
+//
+//  Created by Victor on 05/05/2025.
+//
+
+import os.log
+
+public struct LogManager {
+    public enum LogLevel: String {
+        case info = "INFO"
+        case success = "SUCCÈS"
+        case warning = "ATTENTION"
+        case error = "ERREUR"
+        case network = "RÉSEAU"
+        case blockchain = "BLOCKCHAIN"
+
+        var logType: OSLogType {
+            switch self {
+            case .info, .success: return .info
+            case .warning: return .debug
+            case .error: return .error
+            case .network, .blockchain: return .default
+            }
+        }
+    }
+
+    static let log = OSLog(subsystem: "com.votreapp.swiftchain", category: "blockchain")
+
+    public static func log(_ message: String, level: LogLevel) {
+        os_log("%{public}@: %{public}@", log: log, type: level.logType, level.rawValue, message)
+
+        // Également afficher dans la console pour le CLI
+        let timestamp = DateFormatter.localizedString(from: Date(), dateStyle: .none, timeStyle: .medium)
+        print("[\(timestamp)] [\(level.rawValue)] \(message)")
+    }
+}

SwiftChainCore/Models/MemPool.swift

@@ -0,0 +1,130 @@
+//
+//  MemPool.swift
+//  SwiftChain
+//
+//  Created by Victor on 27/11/2024.
+//
+
+public class MemPool {
+    private var pendingTransactions: [Transaction] = []
+    private let maxTransactionsPerBlock: Int = 10
+    private let accountManager: AccountManager
+
+    init(accountManager: AccountManager) {
+        self.accountManager = accountManager
+    }
+
+    /**
+     Ajoute une transaction au mempool après validation
+     */
+    func addTransaction(_ transaction: Transaction) -> Bool {
+        if validateTransaction(transaction) {
+            pendingTransactions.append(transaction)
+            return true
+        }
+        return false
+    }
+
+    /**
+     Valide une transaction avant de l'ajouter au pool
+     */
+    private func validateTransaction(_ transaction: Transaction) -> Bool {
+        // Vérifications basiques
+        if transaction.amount <= 0 {
+            print("MemPool: Transaction refusée - montant invalide")
+            return false
+        }
+
+        // Pas besoin de vérifier la signature pour les récompenses de minage
+        if transaction.type == "MINING_REWARD" {
+            return true
+        }
+
+        // Vérifier la signature
+        if !transaction.isSignatureValid() {
+            print("MemPool: Transaction refusée - signature invalide")
+            return false
+        }
+
+        // Vérifier le solde
+        if !accountManager.canProcessTransaction(transaction) {
+            print("MemPool: Transaction refusée - solde insuffisant")
+            return false
+        }
+
+        print("MemPool: Transaction validée avec succès")
+        return true
+    }
+
+    /**
+     Récupère un lot de transactions prêtes pour le prochain bloc
+     */
+    func getTransactionsForBlock() -> [Transaction] {
+        var validTransactions: [Transaction] = []
+        var remainingTransactions: [Transaction] = []
+
+        for transaction in pendingTransactions {
+            if validTransactions.count >= maxTransactionsPerBlock {
+                break
+            }
+
+            if validateTransaction(transaction) {
+                validTransactions.append(transaction)
+            } else {
+                remainingTransactions.append(transaction)
+            }
+        }
+
+        // Update pending transactions, removing the selected ones
+        pendingTransactions = remainingTransactions + pendingTransactions.dropFirst(validTransactions.count)
+
+        return validTransactions
+    }
+
+    /**
+     Vérifie si il y a des transactions en attente
+     */
+    var hasPendingTransactions: Bool {
+        return !pendingTransactions.isEmpty
+    }
+
+    /**
+     Retourne toutes les transactions en attente sans les retirer
+     */
+    func getAllPendingTransactions() -> [Transaction] {
+        return pendingTransactions
+    }
+
+    /**
+     * Nettoie le mempool en retirant les transactions qui sont dans la chaîne
+     */
+    func cleanupMempool(chain: [Block]) {
+        var remainingTransactions: [Transaction] = []
+
+        for pendingTx in pendingTransactions {
+            // On vérifie si la transaction est dans un des blocs
+            var isInChain = false
+
+            for block in chain {
+                if block.transactions.contains(where: { chainTx in
+                    chainTx.sender == pendingTx.sender &&
+                        chainTx.receiver == pendingTx.receiver &&
+                        chainTx.amount == pendingTx.amount &&
+                        chainTx.type == pendingTx.type
+                }) {
+                    isInChain = true
+                    break
+                }
+            }
+
+            // Si la transaction n'est pas dans la chaîne, on la garde
+            if !isInChain {
+                remainingTransactions.append(pendingTx)
+            }
+        }
+
+        // Mettre à jour les transactions en attente
+        print("Mempool cleanup: removed \(pendingTransactions.count - remainingTransactions.count) transactions")
+        pendingTransactions = remainingTransactions
+    }
+}

SwiftChainCore/Models/Node.swift

@@ -0,0 +1,534 @@
+//
+//  Node.swift
+//  SwiftChain
+//
+//  Created by Victor on 27/11/2024.
+//
+
+import Foundation
+import Network
+
+public class Node {
+    private let nodeId = UUID().uuidString // Identifiant unique pour chaque nœud
+    private var processedMessages = Set<String>() // Pour traquer les messages déjà traités
+
+    // Network properties
+    private var peers: [NWConnection] = []
+    private var port: NWEndpoint.Port
+    private var listener: NWListener?
+    private let queue = DispatchQueue(label: "com.blockchain.node")
+
+    // Blockchain components
+    private let blockchain: Blockchain
+    private let accountManager: AccountManager
+    private var pendingTransactions: [Transaction] = []
+    private let maxTransactionsPerBlock: Int = 10
+
+    public init(port: NWEndpoint.Port = 8333) {
+        self.port = port
+        self.accountManager = AccountManager()
+        self.blockchain = Blockchain()
+        setupListener()
+    }
+
+    enum MessageType: String, Codable {
+        case transaction = "TX"
+        case blockchainRequest = "BC_REQ"
+        case blockchainResponse = "BC_RES"
+        case newBlock = "NEW_BLOCK"
+    }
+
+    struct NetworkMessage: Codable {
+        let type: MessageType
+        let data: Data
+        let senderId: String // Identifiant du nœud émetteur
+        let messageId: String // Identifiant unique du message
+
+        init(type: MessageType, data: Data, senderId: String) {
+            self.type = type
+            self.data = data
+            self.senderId = senderId
+            self.messageId = UUID().uuidString
+        }
+    }
+
+    // Configuration du listener
+    private func setupListener() {
+        let parameters = NWParameters.tcp
+        do {
+            listener = try NWListener(using: parameters, on: port)
+            listener?.stateUpdateHandler = { [weak self] state in
+                switch state {
+                case .ready:
+                    print("Node is listening on port \(self?.port.rawValue ?? 0)")
+                case .failed(let error):
+                    print("Listener failed with error: \(error)")
+                default:
+                    break
+                }
+            }
+
+            listener?.newConnectionHandler = { [weak self] connection in
+                self?.handleNewConnection(connection)
+                print("New incoming connection from: \(connection.endpoint)")
+            }
+
+            listener?.start(queue: queue)
+        } catch {
+            print("Failed to create listener: \(error)")
+        }
+    }
+
+    public func mineBlock(minerAddress: String) -> Block? {
+        guard let lastBlock = blockchain.chain.last else {
+            print("No existing blockchain")
+            return nil
+        }
+
+        // Utiliser la méthode locale au lieu de memPool
+        var transactions = getTransactionsForBlock()
+        let miningReward = Transaction(
+            sender: "SYSTEM",
+            receiver: minerAddress,
+            amount: 50,
+            type: "MINING_REWARD"
+        )
+        transactions.append(miningReward)
+
+        let newBlock = Block(
+            transactions: transactions,
+            previousHash: lastBlock.hash,
+            index: blockchain.chain.count,
+            difficulty: blockchain.calculateNewDifficulty()
+        )
+
+        newBlock.miner = minerAddress
+        newBlock.timestamp = Int(Date().timeIntervalSince1970)
+        let miningTime = newBlock.mineBlock()
+
+        if accountManager.processBlock(newBlock) {
+            blockchain.chain.append(newBlock)
+            broadcastBlock(newBlock)
+
+            // Nettoyer le mempool après avoir ajouté le bloc
+            cleanupMempool(chain: blockchain.chain)
+
+            print("""
+            Block \(newBlock.index) created:
+            Hash: \(newBlock.hash)
+            Previous hash: \(newBlock.previousHash)
+            Transactions: \(newBlock.transactions.count)
+            Mining time: \(String(format: "%.2f", miningTime)) seconds
+            """)
+            return newBlock
+        }
+
+        return nil
+    }
+
+    // Public interface
+    public func submitTransaction(_ transaction: Transaction) -> Bool {
+        if addTransaction(transaction) {
+            broadcastTransaction(transaction)
+            return true
+        }
+        return false
+    }
+
+    public func getBalance(_ address: String) -> Int {
+        return accountManager.getBalance(address)
+    }
+
+    public func getPendingTransactions() -> [Transaction] {
+        return pendingTransactions
+    }
+
+    public func isChainValid() -> Bool {
+        return blockchain.validateChain(blockchain.chain)
+    }
+
+    // Connexion à un pair
+    public func connectToPeer(host: String, port: NWEndpoint.Port? = nil) {
+        let peerPort = port ?? self.port
+        let endpoint = NWEndpoint.hostPort(host: NWEndpoint.Host(host), port: peerPort)
+        let connection = NWConnection(to: endpoint, using: .tcp)
+
+        connection.stateUpdateHandler = { [weak self] state in
+            switch state {
+            case .ready:
+                print("Connected to peer: \(host)")
+                self?.peers.append(connection)
+                self?.startReceiving(connection)
+                // Demander la blockchain au pair
+                self?.requestBlockchain(from: connection)
+            case .failed(let error):
+                print("Connection failed: \(error)")
+            case .cancelled:
+                print("Connection cancelled: \(host)")
+            default:
+                break
+            }
+        }
+
+        connection.start(queue: queue)
+    }
+
+    // Méthode pour lister les pairs connectés
+    public func listPeers() {
+        if peers.isEmpty {
+            print("Aucun pair connecté")
+            return
+        }
+
+        print("\nPairs connectés (\(peers.count)):")
+        for (index, peer) in peers.enumerated() {
+            print("\(index + 1). \(peer.endpoint)")
+        }
+    }
+
+    // Propagation d'une transaction
+    func broadcastTransaction(_ transaction: Transaction) {
+        do {
+            let transactionData = try JSONEncoder().encode(transaction)
+            let message = NetworkMessage(type: .transaction, data: transactionData, senderId: nodeId)
+            let messageData = try JSONEncoder().encode(message)
+
+            print("Broadcasting transaction to \(peers.count) peers")
+
+            for peer in peers {
+                peer.send(content: messageData, completion: .contentProcessed { error in
+                    if let error = error {
+                        print("Failed to send transaction: \(error)")
+                    } else {
+                        print("Transaction sent successfully to: \(peer.endpoint)")
+                    }
+                })
+            }
+        } catch {
+            print("Failed to encode transaction: \(error)")
+        }
+    }
+
+    // Réception des messages
+    private func startReceiving(_ connection: NWConnection) {
+        connection.receive(minimumIncompleteLength: 1, maximumLength: 65536) { [weak self] content, _, isComplete, error in
+            if let data = content {
+                self?.handleReceivedData(data, from: connection)
+            }
+
+            if let error = error {
+                print("Receive error: \(error)")
+            }
+
+            if !isComplete, error == nil {
+                self?.startReceiving(connection)
+            }
+        }
+    }
+
+    private func handleReceivedData(_ data: Data, from connection: NWConnection) {
+        do {
+            print("Received data of size: \(data.count) bytes")
+            let message = try JSONDecoder().decode(NetworkMessage.self, from: data)
+            print("Message decoded successfully, type: \(message.type)")
+
+            // Vérifier si le message a déjà été traité
+            if processedMessages.contains(message.messageId) {
+                print("Message déjà traité, ignoré")
+                return
+            }
+
+            // Ajouter le message à la liste des messages traités
+            processedMessages.insert(message.messageId)
+
+            switch message.type {
+            case .transaction:
+                let transaction = try JSONDecoder().decode(Transaction.self, from: message.data)
+                print("Transaction decoded: \(transaction.sender) -> \(transaction.receiver): \(transaction.amount)")
+                if addTransaction(transaction) { // Utiliser la méthode locale
+                    print("Transaction added to mempool successfully")
+                } else {
+                    print("Failed to add transaction to mempool")
+                }
+
+            case .blockchainRequest:
+                // Envoyer notre blockchain au pair
+                sendBlockchain(to: connection)
+
+            case .blockchainResponse:
+                // Recevoir et traiter la blockchain
+                let receivedChain = try JSONDecoder().decode([Block].self, from: message.data)
+                handleReceivedBlockchain(receivedChain)
+
+            case .newBlock:
+                // Recevoir et traiter un nouveau bloc
+                let block = try JSONDecoder().decode(Block.self, from: message.data)
+                handleReceivedBlock(block)
+            }
+        } catch {
+            print("Failed to decode received data: \(error)")
+        }
+    }
+
+    private func handleNewConnection(_ connection: NWConnection) {
+        connection.start(queue: queue)
+        peers.append(connection)
+        startReceiving(connection)
+        print("New connection established with: \(connection.endpoint)")
+
+        // Envoyer notre blockchain au nouveau pair
+        sendBlockchain(to: connection)
+    }
+
+    private func requestBlockchain(from peer: NWConnection) {
+        do {
+            let message = NetworkMessage(type: .blockchainRequest, data: Data(), senderId: nodeId)
+            let messageData = try JSONEncoder().encode(message)
+
+            peer.send(content: messageData, completion: .contentProcessed { error in
+                if let error = error {
+                    print("Failed to request blockchain: \(error)")
+                } else {
+                    print("Blockchain request sent to: \(peer.endpoint)")
+                }
+            })
+        } catch {
+            print("Failed to encode blockchain request: \(error)")
+        }
+    }
+
+    private func sendBlockchain(to peer: NWConnection) {
+        do {
+            let chainData = try JSONEncoder().encode(blockchain.chain)
+            let message = NetworkMessage(type: .blockchainResponse, data: chainData, senderId: nodeId)
+            let messageData = try JSONEncoder().encode(message)
+
+            peer.send(content: messageData, completion: .contentProcessed { error in
+                if let error = error {
+                    print("Failed to send blockchain: \(error)")
+                } else {
+                    print("Blockchain sent to: \(peer.endpoint)")
+                }
+            })
+        } catch {
+            print("Failed to encode blockchain: \(error)")
+        }
+    }
+
+    private func handleReceivedBlockchain(_ receivedChain: [Block]) {
+        print("Received blockchain with \(receivedChain.count) blocks")
+
+        if receivedChain.count > blockchain.chain.count {
+            print("Received chain is longer, validating...")
+            if blockchain.validateChain(receivedChain) {
+                // Sauvegarder l'état actuel
+                let oldChain = blockchain.chain
+
+                // Essayer d'appliquer la nouvelle chaîne
+                blockchain.chain = receivedChain
+
+                // Vérifier que toutes les transactions sont valides
+                var isValid = true
+                for block in receivedChain where !accountManager.processBlock(block) {
+                    isValid = false
+                    break
+                }
+
+                if isValid {
+                    print("Blockchain updated successfully")
+                    cleanupMempool(chain: receivedChain)
+                } else {
+                    blockchain.chain = oldChain
+                    print("Failed to process transactions in received chain")
+                }
+            } else {
+                print("Received chain is invalid")
+            }
+        } else {
+            print("Current chain is longer or equal, keeping it")
+        }
+    }
+
+    private func handleReceivedBlock(_ block: Block) {
+        print("Received new block: \(block.hash)")
+
+        if blockchain.chain.contains(where: { $0.hash == block.hash }) {
+            print("Bloc déjà dans la chaîne")
+            return
+        }
+
+        // Vérifier que le bloc suit bien notre dernier bloc
+        guard let lastBlock = blockchain.chain.last else {
+            print("No existing chain")
+            return
+        }
+
+        if block.previousHash != lastBlock.hash {
+            print("Le bloc ne se connecte pas à notre chaîne")
+
+            // Demander la chaîne complète aux pairs pour se synchroniser
+            for peer in peers {
+                requestBlockchain(from: peer)
+            }
+
+            return
+        }
+
+        if !block.isValid() {
+            print("Block is not valid")
+            return
+        }
+
+        // Traiter les transactions du bloc
+        if !accountManager.processBlock(block) {
+            print("Failed to process block transactions")
+            return
+        }
+
+        // Nettoyer le mempool des transactions incluses dans le bloc
+        cleanupMempool(chain: [block])
+
+        // Ajouter le bloc à la chaîne
+        blockchain.chain.append(block)
+        print("New block added to chain")
+
+        // Propager le bloc aux autres pairs (sauf celui qui nous l'a envoyé)
+        broadcastBlock(block)
+    }
+
+    private func broadcastBlock(_ block: Block) {
+        do {
+            let blockData = try JSONEncoder().encode(block)
+            let message = NetworkMessage(type: .newBlock, data: blockData, senderId: nodeId)
+            let messageData = try JSONEncoder().encode(message)
+
+            print("Broadcasting block to peers")
+
+            for peer in peers {
+                peer.send(content: messageData, completion: .contentProcessed { error in
+                    if let error = error {
+                        print("Failed to send block: \(error)")
+                    } else {
+                        print("Block sent successfully to: \(peer.endpoint)")
+                    }
+                })
+            }
+        } catch {
+            print("Failed to encode block: \(error)")
+        }
+    }
+}
+
+// MARK: - Mempool methods
+
+extension Node {
+    // MemPool functionality
+    private func addTransaction(_ transaction: Transaction) -> Bool {
+        if validateTransaction(transaction) {
+            pendingTransactions.append(transaction)
+            print("Transaction added to mempool successfully")
+            return true
+        }
+        return false
+    }
+
+    private func getTransactionsForBlock() -> [Transaction] {
+        var validTransactions: [Transaction] = []
+        var remainingTransactions: [Transaction] = []
+
+        for transaction in pendingTransactions {
+            if validTransactions.count >= maxTransactionsPerBlock {
+                break
+            }
+
+            if validateTransaction(transaction) {
+                validTransactions.append(transaction)
+            } else {
+                remainingTransactions.append(transaction)
+            }
+        }
+
+        // Update pending transactions
+        pendingTransactions = remainingTransactions + pendingTransactions.dropFirst(validTransactions.count)
+
+        return validTransactions
+    }
+
+    private func cleanupMempool(chain: [Block]) {
+        var remainingTransactions: [Transaction] = []
+
+        for pendingTx in pendingTransactions {
+            // On vérifie si la transaction est dans un des blocs
+            var isInChain = false
+
+            for block in chain {
+                if block.transactions.contains(where: { chainTx in
+                    chainTx.sender == pendingTx.sender &&
+                        chainTx.receiver == pendingTx.receiver &&
+                        chainTx.amount == pendingTx.amount &&
+                        chainTx.type == pendingTx.type
+                }) {
+                    isInChain = true
+                    break
+                }
+            }
+
+            if !isInChain {
+                remainingTransactions.append(pendingTx)
+            }
+        }
+
+        print("Mempool cleanup: removed \(pendingTransactions.count - remainingTransactions.count) transactions")
+        pendingTransactions = remainingTransactions
+    }
+
+    var hasPendingTransactions: Bool {
+        return !pendingTransactions.isEmpty
+    }
+
+    public func printMemPoolStatus() {
+        print("""
+        MemPool Status:
+        - Pending transactions: \(pendingTransactions.count)
+        - Maximum transactions per block: \(maxTransactionsPerBlock)
+        """)
+    }
+
+    private func checkDoubleSpending(_ transaction: Transaction) -> Bool {
+        let address = transaction.sender
+        let pendingAmount = pendingTransactions
+            .filter { $0.sender == address }
+            .reduce(0) { $0 + $1.amount }
+
+        let currentBalance = accountManager.getBalance(address)
+
+        if currentBalance < (pendingAmount + transaction.amount) {
+            print("MemPool: Transaction refusée - tentative de double dépense détectée")
+            return false
+        }
+
+        return true
+    }
+
+    private func validateTransaction(_ transaction: Transaction) -> Bool {
+        if !transaction.isValid() {
+            return false
+        }
+
+        if transaction.type == "MINING_REWARD" {
+            return true
+        }
+
+        if !checkDoubleSpending(transaction) {
+            return false
+        }
+
+        if !accountManager.canProcessTransaction(transaction) {
+            print("MemPool: Transaction refusée - solde insuffisant")
+            return false
+        }
+
+        print("MemPool: Transaction validée avec succès")
+        return true
+    }
+}

SwiftChainCore/Models/Transaction.swift

@@ -0,0 +1,96 @@
+//
+//  File.swift
+//
+//
+//  Created by Victor BODINAUD on 31/03/2021.
+//
+
+import Foundation
+
+public class Transaction: Codable {
+    public let sender: String
+    public let receiver: String
+    public let amount: Int
+    public let type: String
+    public var signature: Data?
+    public var senderPublicKey: Data?
+
+    public init(sender: String, receiver: String, amount: Int, type: String) {
+        self.sender = sender
+        self.receiver = receiver
+        self.amount = amount
+        self.type = type
+    }
+
+    // Pour encoder/décoder les Data optionnels
+    enum CodingKeys: String, CodingKey {
+        case sender, receiver, amount, type, signature, senderPublicKey
+    }
+
+    func messageToSign() -> Data {
+        return "\(sender)\(receiver)\(amount)\(type)".data(using: .utf8)!
+    }
+
+    func isSignatureValid() -> Bool {
+        guard let signature = signature,
+              let publicKeyData = senderPublicKey
+        else {
+            return false
+        }
+
+        if type == "MINING_REWARD" {
+            return true
+        }
+
+        return Wallet.verifySignature(
+            for: self,
+            signature: signature,
+            publicKeyData: publicKeyData
+        )
+    }
+
+    func isValid() -> Bool {
+        // Vérifications de base
+        if amount <= 0 {
+            print("Transaction: Amount must be positive")
+            return false
+        }
+
+        if sender.isEmpty || receiver.isEmpty {
+            print("Transaction: Invalid addresses")
+            return false
+        }
+
+        // Vérification du type
+        if !["TRANSFER", "MINING_REWARD"].contains(type) {
+            print("Transaction: Invalid type")
+            return false
+        }
+
+        // Vérifications spécifiques selon le type
+        if type == "MINING_REWARD" {
+            if sender != "SYSTEM" {
+                print("Transaction: Mining reward must come from SYSTEM")
+                return false
+            }
+            if amount != 50 { // La récompense doit être exactement 50
+                print("Transaction: Invalid mining reward amount")
+                return false
+            }
+            return true // Pas besoin de vérifier la signature pour les récompenses
+        }
+
+        // Pour les transactions normales
+        if !isSignatureValid() {
+            print("Transaction: Invalid signature")
+            return false
+        }
+
+        if sender == receiver {
+            print("Transaction: Sender cannot be receiver")
+            return false
+        }
+
+        return true
+    }
+}

SwiftChainCore/Models/Wallet.swift

@@ -0,0 +1,47 @@
+//
+//  Wallet.swift
+//  SwiftChain
+//
+//  Created by Victor on 27/11/2024.
+//
+
+import CryptoKit
+import Foundation
+
+public class Wallet {
+    private let privateKey: Curve25519.Signing.PrivateKey
+    let publicKey: Curve25519.Signing.PublicKey
+    public let address: String
+
+    public init() {
+        // Générer une nouvelle paire de clés
+        privateKey = Curve25519.Signing.PrivateKey()
+        publicKey = privateKey.publicKey
+
+        // Créer une adresse au format swift_(hash)
+        let pubKeyData = publicKey.rawRepresentation
+        let hash = SHA256.hash(data: pubKeyData)
+        let hashString = hash.compactMap { String(format: "%02x", $0) }.joined()
+        address = "swift_" + hashString.prefix(40)
+    }
+
+    // Signer une transaction
+    public func signTransaction(_ transaction: Transaction) -> Data? {
+        let messageData = transaction.messageToSign()
+        return try? privateKey.signature(for: messageData)
+    }
+
+    // Vérifier une signature
+    static func verifySignature(for transaction: Transaction, signature: Data, publicKeyData: Data) -> Bool {
+        guard let publicKey = try? Curve25519.Signing.PublicKey(rawRepresentation: publicKeyData) else {
+            return false
+        }
+
+        return publicKey.isValidSignature(signature, for: transaction.messageToSign())
+    }
+
+    // Obtenir la clé publique en format Data
+    public func getPublicKeyData() -> Data {
+        return publicKey.rawRepresentation
+    }
+}

SwiftChainCore/SwiftChainCore.docc/SwiftChainCore.md

@@ -0,0 +1,13 @@
+# ``SwiftChainCore``
+
+<!--@START_MENU_TOKEN@-->Summary<!--@END_MENU_TOKEN@-->
+
+## Overview
+
+<!--@START_MENU_TOKEN@-->Text<!--@END_MENU_TOKEN@-->
+
+## Topics
+
+### <!--@START_MENU_TOKEN@-->Group<!--@END_MENU_TOKEN@-->
+
+- <!--@START_MENU_TOKEN@-->``Symbol``<!--@END_MENU_TOKEN@-->

SwiftChainCore/SwiftChainCore.h

@@ -0,0 +1,18 @@
+//
+//  SwiftChainCore.h
+//  SwiftChainCore
+//
+//  Created by Victor on 02/12/2024.
+//
+
+#import <Foundation/Foundation.h>
+
+//! Project version number for SwiftChainCore.
+FOUNDATION_EXPORT double SwiftChainCoreVersionNumber;
+
+//! Project version string for SwiftChainCore.
+FOUNDATION_EXPORT const unsigned char SwiftChainCoreVersionString[];
+
+// In this header, you should import all the public headers of your framework using statements like #import <SwiftChainCore/PublicHeader.h>
+
+

SwiftChainCoreTests/SwiftChainCoreTests.swift

@@ -0,0 +1,36 @@
+//
+//  SwiftChainCoreTests.swift
+//  SwiftChainCoreTests
+//
+//  Created by Victor on 02/12/2024.
+//
+
+import XCTest
+@testable import SwiftChainCore
+
+final class SwiftChainCoreTests: XCTestCase {
+
+    override func setUpWithError() throws {
+        // Put setup code here. This method is called before the invocation of each test method in the class.
+    }
+
+    override func tearDownWithError() throws {
+        // Put teardown code here. This method is called after the invocation of each test method in the class.
+    }
+
+    func testExample() throws {
+        // This is an example of a functional test case.
+        // Use XCTAssert and related functions to verify your tests produce the correct results.
+        // Any test you write for XCTest can be annotated as throws and async.
+        // Mark your test throws to produce an unexpected failure when your test encounters an uncaught error.
+        // Mark your test async to allow awaiting for asynchronous code to complete. Check the results with assertions afterwards.
+    }
+
+    func testPerformanceExample() throws {
+        // This is an example of a performance test case.
+        self.measure {
+            // Put the code you want to measure the time of here.
+        }
+    }
+
+}