ng-speed-test
Version:
Angular library for testing internet connection speed
283 lines • 43.7 kB
JavaScript
import { Injectable } from '@angular/core';
import { fromEvent, merge, Observable, of, throwError } from 'rxjs';
import { map, mergeMap, catchError, timeout, switchMap, startWith } from 'rxjs/operators';
import { SpeedTestFileModel } from '../models/speed-test-file.model';
import { SpeedTestSettingsModel } from '../models/speed-test-settings.model';
import { SpeedTestResultsModel } from '../models/speed-test-results.model';
import * as i0 from "@angular/core";
export class SpeedTestService {
constructor() {
this.DEFAULT_TIMEOUT = 15000; // Reduced from 30s to 15s
this.OFFLINE_CHECK_TIMEOUT = 3000; // Quick offline check
}
applyCacheBuster(path) {
const separator = path.includes('?') ? '&' : '?';
return `${path}${separator}cache_bust=${Date.now()}_${Math.random()}`;
}
/**
* Quick connectivity check before running speed test
*/
checkConnectivity() {
// First check navigator.onLine
if (!navigator.onLine) {
return of(false);
}
// Then do a quick network request to verify actual connectivity
return new Observable(observer => {
const controller = new AbortController();
const timeoutId = setTimeout(() => {
controller.abort();
observer.next(false);
observer.complete();
}, this.OFFLINE_CHECK_TIMEOUT);
// Use a small, fast endpoint for connectivity check
fetch('https://httpbin.org/get?minimal=true', {
method: 'HEAD',
mode: 'no-cors',
signal: controller.signal,
cache: 'no-cache'
})
.then(() => {
clearTimeout(timeoutId);
observer.next(true);
observer.complete();
})
.catch(() => {
clearTimeout(timeoutId);
observer.next(false);
observer.complete();
});
return () => {
clearTimeout(timeoutId);
controller.abort();
};
});
}
downloadTest(settings, allResults = []) {
// Quick connectivity check first
return this.checkConnectivity().pipe(switchMap(isConnected => {
if (!isConnected) {
return throwError(() => new Error('No internet connection available'));
}
return new Observable(observer => {
const testResult = new SpeedTestResultsModel(settings.file.size);
const abortController = new AbortController();
let filePath = settings.file.path;
if (settings.file.shouldBustCache) {
filePath = this.applyCacheBuster(filePath);
}
testResult.start();
// Set a more aggressive timeout for the fetch request
const fetchTimeout = setTimeout(() => {
abortController.abort();
testResult.error();
observer.next(testResult);
observer.complete();
}, this.DEFAULT_TIMEOUT);
fetch(filePath, {
method: 'GET',
signal: abortController.signal,
cache: 'no-cache'
})
.then(response => {
clearTimeout(fetchTimeout);
if (!response.ok) {
throw new Error(`HTTP ${response.status}: ${response.statusText}`);
}
return response.blob();
})
.then(() => {
testResult.end();
observer.next(testResult);
observer.complete();
})
.catch(error => {
clearTimeout(fetchTimeout);
console.warn('Speed test download failed:', error);
testResult.error();
const delay = settings.iterations !== 1 ? settings.retryDelay : 0;
setTimeout(() => {
observer.next(testResult);
observer.complete();
}, delay);
});
// Cleanup function
return () => {
clearTimeout(fetchTimeout);
abortController.abort();
};
});
}), mergeMap((testResult) => {
allResults.push(testResult);
if (settings.iterations === 1) {
// Calculate average speed from all valid results
const validResults = allResults.filter(result => result.speedBps > 0);
if (validResults.length === 0) {
return throwError(() => new Error('All speed test iterations failed - no internet connection or server unreachable'));
}
const totalSpeed = validResults.reduce((sum, result) => sum + result.speedBps, 0);
const averageSpeed = totalSpeed / validResults.length;
return of(averageSpeed);
}
else {
settings.iterations--;
return this.downloadTest(settings, allResults);
}
}));
}
validateSettings(settings) {
if (!settings.file?.path) {
throw new Error('ng-speed-test: File path is required');
}
if (!settings.file?.size || settings.file.size <= 0) {
throw new Error('ng-speed-test: Valid file size is required');
}
if (settings.iterations && settings.iterations < 1) {
throw new Error('ng-speed-test: Iterations must be at least 1');
}
}
/**
* Get internet speed in bits per second (bps)
* Fails fast if no internet connection is available
*/
getBps(customSettings) {
return new Observable(observer => {
// Check connectivity immediately
if (!navigator.onLine) {
observer.error(new Error('No internet connection - browser reports offline'));
return;
}
// Small delay to ensure proper initialization
setTimeout(() => {
// Create settings with proper merging
const defaultSettings = new SpeedTestSettingsModel();
const settings = this.mergeSettings(defaultSettings, customSettings);
try {
this.validateSettings(settings);
this.downloadTest(settings).subscribe({
next: (speedBps) => {
observer.next(speedBps);
observer.complete();
},
error: (error) => {
observer.error(error);
}
});
}
catch (error) {
observer.error(error);
}
}, 1);
});
}
/**
* Properly merge custom settings with defaults
*/
mergeSettings(defaultSettings, customSettings) {
if (!customSettings) {
return defaultSettings;
}
const mergedSettings = new SpeedTestSettingsModel();
// Merge iterations
mergedSettings.iterations = customSettings.iterations !== undefined
? customSettings.iterations
: defaultSettings.iterations;
// Merge retryDelay
mergedSettings.retryDelay = customSettings.retryDelay !== undefined
? customSettings.retryDelay
: defaultSettings.retryDelay;
// Merge file settings
if (customSettings.file) {
mergedSettings.file = new SpeedTestFileModel();
// Merge file path
mergedSettings.file.path = customSettings.file.path !== undefined
? customSettings.file.path
: defaultSettings.file.path;
// Merge file size
mergedSettings.file.size = customSettings.file.size !== undefined
? customSettings.file.size
: defaultSettings.file.size;
// Merge shouldBustCache
mergedSettings.file.shouldBustCache = customSettings.file.shouldBustCache !== undefined
? customSettings.file.shouldBustCache
: defaultSettings.file.shouldBustCache;
}
else {
mergedSettings.file = defaultSettings.file;
}
return mergedSettings;
}
/**
* Get internet speed in kilobits per second (Kbps)
*/
getKbps(settings) {
return this.getBps(settings).pipe(map(bps => bps / 1024));
}
/**
* Get internet speed in megabits per second (Mbps)
*/
getMbps(settings) {
return this.getKbps(settings).pipe(map(kbps => kbps / 1024));
}
/**
* Get comprehensive speed test results with fast failure for offline scenarios
*/
getSpeedTestResult(settings) {
const startTime = Date.now();
return this.getBps(settings).pipe(map(bps => ({
bps,
kbps: bps / 1024,
mbps: bps / (1024 * 1024),
duration: (Date.now() - startTime) / 1000
})), timeout(this.DEFAULT_TIMEOUT + 5000), // Overall timeout slightly longer than individual request timeout
catchError(error => {
if (error.name === 'TimeoutError') {
return throwError(() => new Error('Speed test timed out - please check your internet connection'));
}
return throwError(() => error);
}));
}
/**
* Check if the browser is online with enhanced detection
*/
isOnline() {
return merge(fromEvent(window, 'offline').pipe(map(() => false)), fromEvent(window, 'online').pipe(map(() => true)), of(navigator.onLine)).pipe(startWith(navigator.onLine),
// Verify actual connectivity for online state
switchMap(browserOnline => {
if (!browserOnline) {
return of(false);
}
// Quick connectivity verification
return this.checkConnectivity();
}));
}
/**
* Monitor network connection status with enhanced detection
*/
getNetworkStatus() {
const getConnectionInfo = () => {
const connection = navigator.connection ||
navigator.mozConnection ||
navigator.webkitConnection;
return {
isOnline: navigator.onLine,
effectiveType: connection?.effectiveType,
downlink: connection?.downlink
};
};
return merge(fromEvent(window, 'offline').pipe(map(() => ({ ...getConnectionInfo(), isOnline: false }))), fromEvent(window, 'online').pipe(map(() => getConnectionInfo()),
// Verify actual connectivity when browser reports online
switchMap(info => this.checkConnectivity().pipe(map(actuallyOnline => ({ ...info, isOnline: actuallyOnline }))))), of(getConnectionInfo()).pipe(switchMap(info => info.isOnline
? this.checkConnectivity().pipe(map(actuallyOnline => ({ ...info, isOnline: actuallyOnline })))
: of(info))));
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: SpeedTestService, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: SpeedTestService, providedIn: 'root' }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: SpeedTestService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root'
}]
}], ctorParameters: () => [] });
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{ Injectable } from '@angular/core';\r\nimport { fromEvent, merge, Observable, of, throwError } from 'rxjs';\r\nimport { map, mergeMap, catchError, timeout, switchMap, startWith } from 'rxjs/operators';\r\n\r\nimport { SpeedTestFileModel } from '../models/speed-test-file.model';\r\nimport { SpeedTestSettingsModel } from '../models/speed-test-settings.model';\r\nimport { SpeedTestResultsModel } from '../models/speed-test-results.model';\r\n\r\nexport interface SpeedTestResult {\r\n    bps: number;\r\n    kbps: number;\r\n    mbps: number;\r\n    duration: number;\r\n}\r\n\r\n@Injectable({\r\n    providedIn: 'root'\r\n})\r\nexport class SpeedTestService {\r\n    private readonly DEFAULT_TIMEOUT = 15000; // Reduced from 30s to 15s\r\n    private readonly OFFLINE_CHECK_TIMEOUT = 3000; // Quick offline check\r\n\r\n    constructor() {}\r\n\r\n    private applyCacheBuster(path: string): string {\r\n        const separator = path.includes('?') ? '&' : '?';\r\n        return `${path}${separator}cache_bust=${Date.now()}_${Math.random()}`;\r\n    }\r\n\r\n    /**\r\n     * Quick connectivity check before running speed test\r\n     */\r\n    private checkConnectivity(): Observable<boolean> {\r\n        // First check navigator.onLine\r\n        if (!navigator.onLine) {\r\n            return of(false);\r\n        }\r\n\r\n        // Then do a quick network request to verify actual connectivity\r\n        return new Observable<boolean>(observer => {\r\n            const controller = new AbortController();\r\n            const timeoutId = setTimeout(() => {\r\n                controller.abort();\r\n                observer.next(false);\r\n                observer.complete();\r\n            }, this.OFFLINE_CHECK_TIMEOUT);\r\n\r\n            // Use a small, fast endpoint for connectivity check\r\n            fetch('https://httpbin.org/get?minimal=true', {\r\n                method: 'HEAD',\r\n                mode: 'no-cors',\r\n                signal: controller.signal,\r\n                cache: 'no-cache'\r\n            })\r\n                .then(() => {\r\n                    clearTimeout(timeoutId);\r\n                    observer.next(true);\r\n                    observer.complete();\r\n                })\r\n                .catch(() => {\r\n                    clearTimeout(timeoutId);\r\n                    observer.next(false);\r\n                    observer.complete();\r\n                });\r\n\r\n            return () => {\r\n                clearTimeout(timeoutId);\r\n                controller.abort();\r\n            };\r\n        });\r\n    }\r\n\r\n    private downloadTest(settings: SpeedTestSettingsModel, allResults: SpeedTestResultsModel[] = []): Observable<number> {\r\n        // Quick connectivity check first\r\n        return this.checkConnectivity().pipe(\r\n            switchMap(isConnected => {\r\n                if (!isConnected) {\r\n                    return throwError(() => new Error('No internet connection available'));\r\n                }\r\n\r\n                return new Observable<SpeedTestResultsModel>(observer => {\r\n                    const testResult = new SpeedTestResultsModel(settings.file!.size);\r\n                    const abortController = new AbortController();\r\n\r\n                    let filePath = settings.file!.path;\r\n                    if (settings.file!.shouldBustCache) {\r\n                        filePath = this.applyCacheBuster(filePath);\r\n                    }\r\n\r\n                    testResult.start();\r\n\r\n                    // Set a more aggressive timeout for the fetch request\r\n                    const fetchTimeout = setTimeout(() => {\r\n                        abortController.abort();\r\n                        testResult.error();\r\n                        observer.next(testResult);\r\n                        observer.complete();\r\n                    }, this.DEFAULT_TIMEOUT);\r\n\r\n                    fetch(filePath, {\r\n                        method: 'GET',\r\n                        signal: abortController.signal,\r\n                        cache: 'no-cache'\r\n                    })\r\n                        .then(response => {\r\n                            clearTimeout(fetchTimeout);\r\n                            if (!response.ok) {\r\n                                throw new Error(`HTTP ${response.status}: ${response.statusText}`);\r\n                            }\r\n                            return response.blob();\r\n                        })\r\n                        .then(() => {\r\n                            testResult.end();\r\n                            observer.next(testResult);\r\n                            observer.complete();\r\n                        })\r\n                        .catch(error => {\r\n                            clearTimeout(fetchTimeout);\r\n                            console.warn('Speed test download failed:', error);\r\n                            testResult.error();\r\n\r\n                            const delay = settings.iterations !== 1 ? settings.retryDelay! : 0;\r\n\r\n                            setTimeout(() => {\r\n                                observer.next(testResult);\r\n                                observer.complete();\r\n                            }, delay);\r\n                        });\r\n\r\n                    // Cleanup function\r\n                    return () => {\r\n                        clearTimeout(fetchTimeout);\r\n                        abortController.abort();\r\n                    };\r\n                });\r\n            }),\r\n            mergeMap((testResult: SpeedTestResultsModel) => {\r\n                allResults.push(testResult);\r\n\r\n                if (settings.iterations === 1) {\r\n                    // Calculate average speed from all valid results\r\n                    const validResults = allResults.filter(result => result.speedBps > 0);\r\n\r\n                    if (validResults.length === 0) {\r\n                        return throwError(() => new Error('All speed test iterations failed - no internet connection or server unreachable'));\r\n                    }\r\n\r\n                    const totalSpeed = validResults.reduce((sum, result) => sum + result.speedBps, 0);\r\n                    const averageSpeed = totalSpeed / validResults.length;\r\n\r\n                    return of(averageSpeed);\r\n                } else {\r\n                    settings.iterations!--;\r\n                    return this.downloadTest(settings, allResults);\r\n                }\r\n            })\r\n        );\r\n    }\r\n\r\n    private validateSettings(settings: SpeedTestSettingsModel): void {\r\n        if (!settings.file?.path) {\r\n            throw new Error('ng-speed-test: File path is required');\r\n        }\r\n\r\n        if (!settings.file?.size || settings.file.size <= 0) {\r\n            throw new Error('ng-speed-test: Valid file size is required');\r\n        }\r\n\r\n        if (settings.iterations && settings.iterations < 1) {\r\n            throw new Error('ng-speed-test: Iterations must be at least 1');\r\n        }\r\n    }\r\n\r\n    /**\r\n     * Get internet speed in bits per second (bps)\r\n     * Fails fast if no internet connection is available\r\n     */\r\n    getBps(customSettings?: Partial<SpeedTestSettingsModel>): Observable<number> {\r\n        return new Observable(observer => {\r\n            // Check connectivity immediately\r\n            if (!navigator.onLine) {\r\n                observer.error(new Error('No internet connection - browser reports offline'));\r\n                return;\r\n            }\r\n\r\n            // Small delay to ensure proper initialization\r\n            setTimeout(() => {\r\n                // Create settings with proper merging\r\n                const defaultSettings = new SpeedTestSettingsModel();\r\n                const settings = this.mergeSettings(defaultSettings, customSettings);\r\n\r\n                try {\r\n                    this.validateSettings(settings);\r\n\r\n                    this.downloadTest(settings).subscribe({\r\n                        next: (speedBps) => {\r\n                            observer.next(speedBps);\r\n                            observer.complete();\r\n                        },\r\n                        error: (error) => {\r\n                            observer.error(error);\r\n                        }\r\n                    });\r\n                } catch (error) {\r\n                    observer.error(error);\r\n                }\r\n            }, 1);\r\n        });\r\n    }\r\n\r\n    /**\r\n     * Properly merge custom settings with defaults\r\n     */\r\n    private mergeSettings(defaultSettings: SpeedTestSettingsModel, customSettings?: Partial<SpeedTestSettingsModel>): SpeedTestSettingsModel {\r\n        if (!customSettings) {\r\n            return defaultSettings;\r\n        }\r\n\r\n        const mergedSettings = new SpeedTestSettingsModel();\r\n\r\n        // Merge iterations\r\n        mergedSettings.iterations = customSettings.iterations !== undefined\r\n            ? customSettings.iterations\r\n            : defaultSettings.iterations;\r\n\r\n        // Merge retryDelay\r\n        mergedSettings.retryDelay = customSettings.retryDelay !== undefined\r\n            ? customSettings.retryDelay\r\n            : defaultSettings.retryDelay;\r\n\r\n        // Merge file settings\r\n        if (customSettings.file) {\r\n            mergedSettings.file = new SpeedTestFileModel();\r\n\r\n            // Merge file path\r\n            mergedSettings.file.path = customSettings.file.path !== undefined\r\n                ? customSettings.file.path\r\n                : defaultSettings.file!.path;\r\n\r\n            // Merge file size\r\n            mergedSettings.file.size = customSettings.file.size !== undefined\r\n                ? customSettings.file.size\r\n                : defaultSettings.file!.size;\r\n\r\n            // Merge shouldBustCache\r\n            mergedSettings.file.shouldBustCache = customSettings.file.shouldBustCache !== undefined\r\n                ? customSettings.file.shouldBustCache\r\n                : defaultSettings.file!.shouldBustCache;\r\n        } else {\r\n            mergedSettings.file = defaultSettings.file;\r\n        }\r\n\r\n        return mergedSettings;\r\n    }\r\n\r\n    /**\r\n     * Get internet speed in kilobits per second (Kbps)\r\n     */\r\n    getKbps(settings?: Partial<SpeedTestSettingsModel>): Observable<number> {\r\n        return this.getBps(settings).pipe(\r\n            map(bps => bps / 1024)\r\n        );\r\n    }\r\n\r\n    /**\r\n     * Get internet speed in megabits per second (Mbps)\r\n     */\r\n    getMbps(settings?: Partial<SpeedTestSettingsModel>): Observable<number> {\r\n        return this.getKbps(settings).pipe(\r\n            map(kbps => kbps / 1024)\r\n        );\r\n    }\r\n\r\n    /**\r\n     * Get comprehensive speed test results with fast failure for offline scenarios\r\n     */\r\n    getSpeedTestResult(settings?: Partial<SpeedTestSettingsModel>): Observable<SpeedTestResult> {\r\n        const startTime = Date.now();\r\n\r\n        return this.getBps(settings).pipe(\r\n            map(bps => ({\r\n                bps,\r\n                kbps: bps / 1024,\r\n                mbps: bps / (1024 * 1024),\r\n                duration: (Date.now() - startTime) / 1000\r\n            })),\r\n            timeout(this.DEFAULT_TIMEOUT + 5000), // Overall timeout slightly longer than individual request timeout\r\n            catchError(error => {\r\n                if (error.name === 'TimeoutError') {\r\n                    return throwError(() => new Error('Speed test timed out - please check your internet connection'));\r\n                }\r\n                return throwError(() => error);\r\n            })\r\n        );\r\n    }\r\n\r\n    /**\r\n     * Check if the browser is online with enhanced detection\r\n     */\r\n    isOnline(): Observable<boolean> {\r\n        return merge(\r\n            fromEvent(window, 'offline').pipe(map(() => false)),\r\n            fromEvent(window, 'online').pipe(map(() => true)),\r\n            of(navigator.onLine)\r\n        ).pipe(\r\n            startWith(navigator.onLine),\r\n            // Verify actual connectivity for online state\r\n            switchMap(browserOnline => {\r\n                if (!browserOnline) {\r\n                    return of(false);\r\n                }\r\n                // Quick connectivity verification\r\n                return this.checkConnectivity();\r\n            })\r\n        );\r\n    }\r\n\r\n    /**\r\n     * Monitor network connection status with enhanced detection\r\n     */\r\n    getNetworkStatus(): Observable<{ isOnline: boolean; effectiveType?: string; downlink?: number }> {\r\n        const getConnectionInfo = () => {\r\n            const connection = (navigator as any).connection ||\r\n                (navigator as any).mozConnection ||\r\n                (navigator as any).webkitConnection;\r\n\r\n            return {\r\n                isOnline: navigator.onLine,\r\n                effectiveType: connection?.effectiveType,\r\n                downlink: connection?.downlink\r\n            };\r\n        };\r\n\r\n        return merge(\r\n            fromEvent(window, 'offline').pipe(\r\n                map(() => ({ ...getConnectionInfo(), isOnline: false }))\r\n            ),\r\n            fromEvent(window, 'online').pipe(\r\n                map(() => getConnectionInfo()),\r\n                // Verify actual connectivity when browser reports online\r\n                switchMap(info =>\r\n                    this.checkConnectivity().pipe(\r\n                        map(actuallyOnline => ({ ...info, isOnline: actuallyOnline }))\r\n                    )\r\n                )\r\n            ),\r\n            of(getConnectionInfo()).pipe(\r\n                switchMap(info =>\r\n                    info.isOnline\r\n                        ? this.checkConnectivity().pipe(\r\n                            map(actuallyOnline => ({ ...info, isOnline: actuallyOnline }))\r\n                        )\r\n                        : of(info)\r\n                )\r\n            )\r\n        );\r\n    }\r\n}\r\n"]}