### Objective-C Usage (iOS 12+)

Source: https://github.com/dustturtle/realreachability2/blob/main/README.md

Provides examples for starting and stopping network monitoring, listening for reachability changes via notifications, performing one-time checks, and configuring settings in Objective-C.

```objc
#import <RealReachability2ObjC/RealReachability2ObjC.h>

// Start monitoring
[[RRReachability sharedInstance] startNotifier];

// Listen for changes
// Posted when reachability status or connection type changes
[[NSNotificationCenter defaultCenter] 
    addObserver:self 
    selector:@selector(reachabilityChanged:) 
    name:kRRReachabilityChangedNotification 
    object:nil];

- (void)reachabilityChanged:(NSNotification *)notification {
    RRReachabilityStatus status = [notification.userInfo[kRRReachabilityStatusKey] integerValue];
    RRConnectionType type = [notification.userInfo[kRRConnectionTypeKey] integerValue];
    BOOL isSecondaryReachable = [notification.userInfo[kRRSecondaryReachableKey] boolValue];
    
    switch (status) {
        case RRReachabilityStatusReachable:
            if (isSecondaryReachable) {
                NSLog(@"Network reachable (secondary cellular fallback)");
            } else {
                NSLog(@"Network reachable");
            }
            break;
        case RRReachabilityStatusNotReachable:
            NSLog(@"Network not reachable");
            break;
        default:
            break;
    }
}

// One-time check
[[RRReachability sharedInstance] checkReachabilityWithCompletion:^(RRReachabilityStatus status, RRConnectionType type) {
    // Handle result
}];

// Configuration
[RRReachability sharedInstance].probeMode = RRProbeModeParallel;
[RRReachability sharedInstance].timeout = 5.0;
[RRReachability sharedInstance].periodicProbeEnabled = YES;  // default: YES
[RRReachability sharedInstance].allowCellularFallback = NO;  // default: NO
// allowCellularFallback requires HTTP participation (parallel/httpOnly) 
// when enabled on Wi-Fi, ObjC uses HTTP primary probe (cellular disabled) + fallback probe (cellular allowed)
// when disabled on Wi-Fi, ObjC primary HTTP probing also keeps cellular disabled to avoid implicit fallback

// Stop monitoring
[[RRReachability sharedInstance] stopNotifier];
```

--------------------------------

### Swift Source Integration Usage

Source: https://github.com/dustturtle/realreachability2/blob/main/README.md

Example of how to check network reachability using the Swift API after source integration.

```swift
// If files are added into the same app target, no module import is required.
let status = await RealReachability.shared.check()
```

--------------------------------

### Swift Build Command

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

Command to build the Swift project and show verbose output.

```bash
swift build -v
```

--------------------------------

### Swift Unit Tests

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

Command to run Swift unit tests.

```bash
RealReachability2Tests.RealReachability2Tests
```

--------------------------------

### HTTP Integration Test Sample

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

Sample name for an HTTP integration test.

```bash
testHTTPProberWithShortTimeout
```

--------------------------------

### Swift Usage (iOS 13+)

Source: https://github.com/dustturtle/realreachability2/blob/main/README.md

Demonstrates how to perform one-time checks, set up continuous monitoring, integrate with SwiftUI, and configure the reachability settings in Swift.

```swift
import RealReachability2

// One-time check
let status = await RealReachability.shared.check()
switch status {
case .reachable(let connectionType):
    print("Connected via \(connectionType)")
case .notReachable:
    print("No internet connection")
case .unknown:
    print("Status unknown")
}

// Continuous monitoring
Task {
    for await status in RealReachability.shared.statusStream {
        print("Network status: \(status)")
    }
}

// SwiftUI usage
.task {
    for await status in RealReachability.shared.statusStream {
        self.networkStatus = status
    }
}

// Configuration
RealReachability.shared.configuration = ReachabilityConfiguration(
    probeMode: .parallel,  // .parallel, .httpOnly, or .icmpOnly
    timeout: 5.0,
    httpProbeURL: URL(string: "https://www.gstatic.com/generate_204")!,
    icmpHost: "8.8.8.8"  // Host for ICMP ping
)
```

--------------------------------

### Swift ICMP Integration Test Sample

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

Sample name for a Swift ICMP integration test that may hang.

```bash
testICMPPingerWithShortTimeout
```

--------------------------------

### Objective-C ICMP Fallback Implementation Files

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

Files related to Objective-C ICMP fallback detection capability.

```text
/RealReachability2/Sources/RealReachability2ObjC/RRPingFoundation.m
```

```text
RealReachability2/Sources/RealReachability2ObjC/RRReachability.m
```

--------------------------------

### Swift Package Manager Target Products

Source: https://github.com/dustturtle/realreachability2/blob/main/README.md

Specify the product to use when integrating RealReachability2 via Swift Package Manager.

```swift
// For Swift (iOS 13+)
.product(name: "RealReachability2", package: "RealReachability2")

// For Objective-C via SPM (iOS 13+)
.product(name: "RealReachability2ObjC", package: "RealReachability2")
```

--------------------------------

### README and SPM Platform Declaration File Paths

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

File paths related to the inconsistency between README and SPM platform declarations.

```text
/RealReachability2/README.md:10
```

```text
RealReachability2/Package.swift:8
```

--------------------------------

### Swift Concurrency Risk File Path

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

File path related to Swift 6 concurrency compatibility risk.

```text
/RealReachability2/Sources/RealReachability2/RealReachability.swift:162
```

--------------------------------

### Swift ICMP Pinger File Path

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

File path related to a potential Swift ICMP ping issue.

```text
/RealReachability2/Sources/RealReachability2/Prober/ICMPPinger.swift:45
```

--------------------------------

### Swift Package Manager Dependencies

Source: https://github.com/dustturtle/realreachability2/blob/main/README.md

Add the RealReachability2 library to your Swift Package Manager dependencies.

```swift
dependencies: [
    .package(url: "https://github.com/dustturtle/RealReachability2.git", from: "1.0")
]
```

--------------------------------

### Stream Model Subscription File Paths

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

File paths related to the stream model's single subscription risk.

```text
RealReachability2/Sources/RealReachability2/RealReachability.swift:95
```

```text
RealReachability2/Sources/RealReachability2/Monitor/PathMonitorWrapper.swift:27
```

--------------------------------

### Objective-C Reachability File Path

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

File path related to a potential Objective-C reachability misjudgment.

```text
/RealReachability2/Sources/RealReachability2ObjC/RRReachability.m:129
```

--------------------------------

### CI Filter Strategy File Paths

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

File paths related to imprecise CI filtering strategy.

```text
/RealReachability2/.github/workflows/ci.yml:34
```

```text
RealReachability2/.github/workflows/ci.yml:52
```

--------------------------------

### PathMonitor Restart Semantics File Path

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

File path related to PathMonitor restart semantics risk.

```text
/RealReachability2/Sources/RealReachability2/Monitor/PathMonitorWrapper.swift:15
```

--------------------------------

### Objective-C Unit Tests

Source: https://github.com/dustturtle/realreachability2/blob/main/checklist.md

Identifier for Objective-C unit tests.

```bash
RRReachabilityTests
```

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