LEctenna Tester Active<\/title>\n <style>\n body {\n display: flex;\n flex-direction: column;\n align-items: center;\n height: 100vh;\n margin: 0;\n background-color: black;\n color: #fff;\n font-family: Arial, sans-serif;\n position: relative;\n }\n\n h1, p {\n text-align: center;\n }\n\n #statusMessage {\n margin-top: 20px;\n text-align: center;\n font-size: 18px;\n color: #00ff00;\n }\n\n #toggleButton {\n position: absolute;\n top: 1200px;\n left: 10px;\n padding: 10px 20px;\n background-color: #fff;\n color: #000;\n border: none;\n border-radius: 5px;\n cursor: pointer;\n font-size: 16px;\n transition: background-color 0.3s ease, color 0.3s ease;\n }\n\n #toggleButton.dark {\n background-color: #000;\n color: #fff;\n }\n <\/style>\n<\/head>\n<body>\n <button id=\"toggleButton\">Switch to Light Mode<\/button>\n\n <div>\n <h1>LEctenna Tester Active<\/h1>\n <p>Uploading real data packets to a testing endpoint.<\/p>\n <p id=\"statusMessage\">Status: Preparing…<\/p>\n <\/div>\n\n <script>\n \/\/ -------- Konfiguration (ohne UI-\u00c4nderung) --------\n const TARGET_URL = \"https:\/\/httpbin.org\/post\"; \/\/ Dummy Endpoint\n const TOTAL_BYTES_PER_CYCLE = 500 * 1024 * 1024; \/\/ 500 MB je Zyklus\n const MAX_CONCURRENCY = 4; \/\/ parallele Streams\n const START_CHUNK = 4 * 1024 * 1024; \/\/ 4 MB\n const MIN_CHUNK = 256 * 1024; \/\/ 256 KB\n const MAX_CHUNK = 16 * 1024 * 1024; \/\/ 16 MB\n const MAX_RETRIES = 6; \/\/ pro Chunk\n const BASE_BACKOFF_MS = 500; \/\/ Start-Backoff\n const HARD_TIMEOUT_MS = 20000; \/\/ 20 s Timeout je Chunk\n const EMA_ALPHA = 0.2; \/\/ Gl\u00e4ttung Speed\n\n const statusMessage = document.getElementById('statusMessage');\n const toggleButton = document.getElementById('toggleButton');\n\n \/\/ ---- UI Toggle (unver\u00e4ndert) ----\n toggleButton.addEventListener('click', () => {\n const isDark = document.body.style.backgroundColor === 'black';\n document.body.style.backgroundColor = isDark ? 'white' : 'black';\n document.body.style.color = isDark ? 'black' : 'white';\n toggleButton.textContent = isDark ? 'Switch to Dark Mode' : 'Switch to Light Mode';\n toggleButton.classList.toggle('dark', !isDark);\n });\n\n \/\/ ---- Utils ----\n function sleep(ms){ return new Promise(r => setTimeout(r, ms)); }\n function human(bytes){\n if (bytes >= 1024**3) return (bytes\/1024**3).toFixed(2) + \" GB\";\n if (bytes >= 1024**2) return (bytes\/1024**2).toFixed(2) + \" MB\";\n if (bytes >= 1024) return (bytes\/1024).toFixed(2) + \" KB\";\n return bytes + \" B\";\n }\n\n \/\/ ---- Dynamik \/ globale Zust\u00e4nde ----\n let chunkSize = START_CHUNK;\n try {\n const c = navigator.connection;\n if (c && (c.effectiveType?.includes('5g') || (c.downlink||0) > 50)) {\n chunkSize = 8 * 1024 * 1024; \/\/ 8 MB Start bei gutem 5G\n }\n } catch(_) {}\n\n let emaMbps = 0; \/\/ gegl\u00e4ttete Gesamt-Rate\n let cycleBytesUploaded = 0; \/\/ fortschritt im Zyklus\n let cycleTargetBytes = TOTAL_BYTES_PER_CYCLE;\n let errorsInWindow = 0;\n\n \/\/ Gemeinsamer Puffer (wird je nach aktuellem chunkSize neu erzeugt)\n function makePayload(bytes){ return new Uint8Array(bytes).fill(65); }\n\n async function uploadChunk(bytes){\n const controller = new AbortController();\n const signal = controller.signal;\n const payload = makePayload(bytes);\n\n let attempt = 0;\n while (true) {\n const started = performance.now();\n const timeout = setTimeout(() => controller.abort('timeout'), HARD_TIMEOUT_MS);\n try {\n await fetch(TARGET_URL, {\n method: \"POST\",\n body: payload,\n headers: { \"Content-Type\": \"application\/octet-stream\", \"Cache-Control\":\"no-store\" },\n signal\n });\n clearTimeout(timeout);\n\n const dt = (performance.now() - started) \/ 1000; \/\/ s\n const mbps = (bytes * 8) \/ (dt * 1e6);\n emaMbps = emaMbps === 0 ? mbps : (EMA_ALPHA * mbps + (1 - EMA_ALPHA) * emaMbps);\n\n \/\/ Chunk-Tuning\n if (mbps > 80 && chunkSize < MAX_CHUNK) {\n chunkSize = Math.min(MAX_CHUNK, Math.round(chunkSize * 1.5));\n } else if ((mbps < 10 || dt > HARD_TIMEOUT_MS \/ 2000) && chunkSize > MIN_CHUNK) {\n chunkSize = Math.max(MIN_CHUNK, Math.round(chunkSize \/ 2));\n }\n\n return { mbps, dt };\n } catch (err) {\n clearTimeout(timeout);\n attempt += 1;\n errorsInWindow += 1;\n\n if (attempt > MAX_RETRIES) {\n \/\/ konservativ verkleinern bei harten Problemen\n chunkSize = Math.max(MIN_CHUNK, Math.round(chunkSize \/ 2));\n throw err;\n }\n\n \/\/ Exponential Backoff + Jitter\n const jitter = Math.random() * 0.4 + 0.8; \/\/ 0.8x\u20131.2x\n const wait = Math.min(30000, BASE_BACKOFF_MS * (2 ** (attempt - 1))) * jitter;\n await sleep(wait);\n }\n }\n }\n\n \/\/ Reserviert den n\u00e4chsten Arbeitsumfang f\u00fcr einen Stream (Single-Thread JS => safe)\n function reserveNextBytes(){\n if (cycleBytesUploaded >= cycleTargetBytes) return 0;\n const remaining = cycleTargetBytes - cycleBytesUploaded;\n const take = Math.min(chunkSize, remaining);\n cycleBytesUploaded += take;\n return take;\n }\n\n async function streamWorker(id){\n while (true) {\n const bytes = reserveNextBytes();\n if (bytes === 0) return; \/\/ Zyklus fertig\n try {\n const { mbps } = await uploadChunk(bytes);\n \/\/ optional: pro-Stream-Log in Konsole\n \/\/ console.debug(`stream ${id}: ${human(bytes)} @ ${mbps.toFixed(1)} Mbps`);\n } catch(_) {\n \/\/ Fehlermeldung kommt nur in Statuszeile (UI bleibt gleich)\n \/\/ kleine Pause, Bytes bleiben als \"verbraucht\" -> n\u00e4chste Runde schiebt weiter\n await sleep(1500);\n }\n }\n }\n\n function updateStatus(){\n statusMessage.textContent =\n `Status: Uploading\u2026 ${human(cycleBytesUploaded)}\/${human(cycleTargetBytes)} `\n + `| ${emaMbps.toFixed(1)} Mbps avg | chunk ${human(chunkSize)} `\n + `| streams ${MAX_CONCURRENCY}`;\n }\n\n async function uploadCycle(){\n cycleBytesUploaded = 0;\n cycleTargetBytes = TOTAL_BYTES_PER_CYCLE;\n emaMbps = 0;\n errorsInWindow = 0;\n\n statusMessage.textContent = \"Status: Uploading...\";\n\n \/\/ Starte parallele Streams\n const workers = [];\n for (let i = 0; i < MAX_CONCURRENCY; i++) {\n workers.push(streamWorker(i+1));\n }\n\n \/\/ UI-Progress-Ticker\n const uiTimer = setInterval(updateStatus, 300);\n\n \/\/ Warten bis alle Streams fertig sind\n await Promise.allSettled(workers);\n clearInterval(uiTimer);\n updateStatus();\n\n statusMessage.textContent = \"Status: Preparing for next upload...\";\n await sleep(20);\n }\n\n async function uploadLoop(){\n while (true) {\n try {\n await uploadCycle();\n } catch (e) {\n statusMessage.textContent = \"Status: Netzproblem \u2013 retry\u2026\";\n await sleep(2000);\n }\n }\n }\n\n window.onload = uploadLoop;\n <\/script>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>LEctenna Tester Active Switch to Light Mode LEctenna Tester Active Uploading real data packets to a testing endpoint. Status: Preparing…<\/p>\n","protected":false},"author":1,"featured_media":294,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"class_list":["post-191","page","type-page","status-publish","has-post-thumbnail","hentry","entry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t<meta name=\"description\" content=\"LEctenna Tester Active Switch to Light Mode LEctenna Tester Active Uploading real data packets to a testing endpoint. 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{"id":191,"date":"2024-12-09T22:21:55","date_gmt":"2024-12-09T22:21:55","guid":{"rendered":"https:\/\/lectenna.com\/?page_id=191"},"modified":"2025-11-05T19:35:45","modified_gmt":"2025-11-05T19:35:45","slug":"letu","status":"publish","type":"page","link":"https:\/\/lectenna.com\/index.php\/letu\/","title":{"rendered":"\ud83d\udedc2.4 GHz"},"content":{"rendered":"\n\n\n\n \n \n LEctenna Tester Active<\/title>\n <style>\n body {\n display: flex;\n flex-direction: column;\n align-items: center;\n height: 100vh;\n margin: 0;\n background-color: black;\n color: #fff;\n font-family: Arial, sans-serif;\n position: relative;\n }\n\n h1, p {\n text-align: center;\n }\n\n #statusMessage {\n margin-top: 20px;\n text-align: center;\n font-size: 18px;\n color: #00ff00;\n }\n\n #toggleButton {\n position: absolute;\n top: 1200px;\n left: 10px;\n padding: 10px 20px;\n background-color: #fff;\n color: #000;\n border: none;\n border-radius: 5px;\n cursor: pointer;\n font-size: 16px;\n transition: background-color 0.3s ease, color 0.3s ease;\n }\n\n #toggleButton.dark {\n background-color: #000;\n color: #fff;\n }\n <\/style>\n<\/head>\n<body>\n <button id=\"toggleButton\">Switch to Light Mode<\/button>\n\n <div>\n <h1>LEctenna Tester Active<\/h1>\n <p>Uploading real data packets to a testing endpoint.<\/p>\n <p id=\"statusMessage\">Status: Preparing…<\/p>\n <\/div>\n\n <script>\n \/\/ -------- Konfiguration (ohne UI-\u00c4nderung) --------\n const TARGET_URL = \"https:\/\/httpbin.org\/post\"; \/\/ Dummy Endpoint\n const TOTAL_BYTES_PER_CYCLE = 500 * 1024 * 1024; \/\/ 500 MB je Zyklus\n const MAX_CONCURRENCY = 4; \/\/ parallele Streams\n const START_CHUNK = 4 * 1024 * 1024; \/\/ 4 MB\n const MIN_CHUNK = 256 * 1024; \/\/ 256 KB\n const MAX_CHUNK = 16 * 1024 * 1024; \/\/ 16 MB\n const MAX_RETRIES = 6; \/\/ pro Chunk\n const BASE_BACKOFF_MS = 500; \/\/ Start-Backoff\n const HARD_TIMEOUT_MS = 20000; \/\/ 20 s Timeout je Chunk\n const EMA_ALPHA = 0.2; \/\/ Gl\u00e4ttung Speed\n\n const statusMessage = document.getElementById('statusMessage');\n const toggleButton = document.getElementById('toggleButton');\n\n \/\/ ---- UI Toggle (unver\u00e4ndert) ----\n toggleButton.addEventListener('click', () => {\n const isDark = document.body.style.backgroundColor === 'black';\n document.body.style.backgroundColor = isDark ? 'white' : 'black';\n document.body.style.color = isDark ? 'black' : 'white';\n toggleButton.textContent = isDark ? 'Switch to Dark Mode' : 'Switch to Light Mode';\n toggleButton.classList.toggle('dark', !isDark);\n });\n\n \/\/ ---- Utils ----\n function sleep(ms){ return new Promise(r => setTimeout(r, ms)); }\n function human(bytes){\n if (bytes >= 1024**3) return (bytes\/1024**3).toFixed(2) + \" GB\";\n if (bytes >= 1024**2) return (bytes\/1024**2).toFixed(2) + \" MB\";\n if (bytes >= 1024) return (bytes\/1024).toFixed(2) + \" KB\";\n return bytes + \" B\";\n }\n\n \/\/ ---- Dynamik \/ globale Zust\u00e4nde ----\n let chunkSize = START_CHUNK;\n try {\n const c = navigator.connection;\n if (c && (c.effectiveType?.includes('5g') || (c.downlink||0) > 50)) {\n chunkSize = 8 * 1024 * 1024; \/\/ 8 MB Start bei gutem 5G\n }\n } catch(_) {}\n\n let emaMbps = 0; \/\/ gegl\u00e4ttete Gesamt-Rate\n let cycleBytesUploaded = 0; \/\/ fortschritt im Zyklus\n let cycleTargetBytes = TOTAL_BYTES_PER_CYCLE;\n let errorsInWindow = 0;\n\n \/\/ Gemeinsamer Puffer (wird je nach aktuellem chunkSize neu erzeugt)\n function makePayload(bytes){ return new Uint8Array(bytes).fill(65); }\n\n async function uploadChunk(bytes){\n const controller = new AbortController();\n const signal = controller.signal;\n const payload = makePayload(bytes);\n\n let attempt = 0;\n while (true) {\n const started = performance.now();\n const timeout = setTimeout(() => controller.abort('timeout'), HARD_TIMEOUT_MS);\n try {\n await fetch(TARGET_URL, {\n method: \"POST\",\n body: payload,\n headers: { \"Content-Type\": \"application\/octet-stream\", \"Cache-Control\":\"no-store\" },\n signal\n });\n clearTimeout(timeout);\n\n const dt = (performance.now() - started) \/ 1000; \/\/ s\n const mbps = (bytes * 8) \/ (dt * 1e6);\n emaMbps = emaMbps === 0 ? mbps : (EMA_ALPHA * mbps + (1 - EMA_ALPHA) * emaMbps);\n\n \/\/ Chunk-Tuning\n if (mbps > 80 && chunkSize < MAX_CHUNK) {\n chunkSize = Math.min(MAX_CHUNK, Math.round(chunkSize * 1.5));\n } else if ((mbps < 10 || dt > HARD_TIMEOUT_MS \/ 2000) && chunkSize > MIN_CHUNK) {\n chunkSize = Math.max(MIN_CHUNK, Math.round(chunkSize \/ 2));\n }\n\n return { mbps, dt };\n } catch (err) {\n clearTimeout(timeout);\n attempt += 1;\n errorsInWindow += 1;\n\n if (attempt > MAX_RETRIES) {\n \/\/ konservativ verkleinern bei harten Problemen\n chunkSize = Math.max(MIN_CHUNK, Math.round(chunkSize \/ 2));\n throw err;\n }\n\n \/\/ Exponential Backoff + Jitter\n const jitter = Math.random() * 0.4 + 0.8; \/\/ 0.8x\u20131.2x\n const wait = Math.min(30000, BASE_BACKOFF_MS * (2 ** (attempt - 1))) * jitter;\n await sleep(wait);\n }\n }\n }\n\n \/\/ Reserviert den n\u00e4chsten Arbeitsumfang f\u00fcr einen Stream (Single-Thread JS => safe)\n function reserveNextBytes(){\n if (cycleBytesUploaded >= cycleTargetBytes) return 0;\n const remaining = cycleTargetBytes - cycleBytesUploaded;\n const take = Math.min(chunkSize, remaining);\n cycleBytesUploaded += take;\n return take;\n }\n\n async function streamWorker(id){\n while (true) {\n const bytes = reserveNextBytes();\n if (bytes === 0) return; \/\/ Zyklus fertig\n try {\n const { mbps } = await uploadChunk(bytes);\n \/\/ optional: pro-Stream-Log in Konsole\n \/\/ console.debug(`stream ${id}: ${human(bytes)} @ ${mbps.toFixed(1)} Mbps`);\n } catch(_) {\n \/\/ Fehlermeldung kommt nur in Statuszeile (UI bleibt gleich)\n \/\/ kleine Pause, Bytes bleiben als \"verbraucht\" -> n\u00e4chste Runde schiebt weiter\n await sleep(1500);\n }\n }\n }\n\n function updateStatus(){\n statusMessage.textContent =\n `Status: Uploading\u2026 ${human(cycleBytesUploaded)}\/${human(cycleTargetBytes)} `\n + `| ${emaMbps.toFixed(1)} Mbps avg | chunk ${human(chunkSize)} `\n + `| streams ${MAX_CONCURRENCY}`;\n }\n\n async function uploadCycle(){\n cycleBytesUploaded = 0;\n cycleTargetBytes = TOTAL_BYTES_PER_CYCLE;\n emaMbps = 0;\n errorsInWindow = 0;\n\n statusMessage.textContent = \"Status: Uploading...\";\n\n \/\/ Starte parallele Streams\n const workers = [];\n for (let i = 0; i < MAX_CONCURRENCY; i++) {\n workers.push(streamWorker(i+1));\n }\n\n \/\/ UI-Progress-Ticker\n const uiTimer = setInterval(updateStatus, 300);\n\n \/\/ Warten bis alle Streams fertig sind\n await Promise.allSettled(workers);\n clearInterval(uiTimer);\n updateStatus();\n\n statusMessage.textContent = \"Status: Preparing for next upload...\";\n await sleep(20);\n }\n\n async function uploadLoop(){\n while (true) {\n try {\n await uploadCycle();\n } catch (e) {\n statusMessage.textContent = \"Status: Netzproblem \u2013 retry\u2026\";\n await sleep(2000);\n }\n }\n }\n\n window.onload = uploadLoop;\n <\/script>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>LEctenna Tester Active Switch to Light Mode LEctenna Tester Active Uploading real data packets to a testing endpoint. Status: Preparing…<\/p>\n","protected":false},"author":1,"featured_media":294,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"class_list":["post-191","page","type-page","status-publish","has-post-thumbnail","hentry","entry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t<meta name=\"description\" content=\"LEctenna Tester Active Switch to Light Mode LEctenna Tester Active Uploading real data packets to a testing endpoint. 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