diff --git a/packages/bun/src/client.ts b/packages/bun/src/client.ts
index 90d83193..180a2690 100644
--- a/packages/bun/src/client.ts
+++ b/packages/bun/src/client.ts
@@ -11,19 +11,18 @@ import {
     BaseTelegramClient as BaseTelegramClientBase,
     TelegramClient as TelegramClientBase,
 } from '@mtcute/core/client.js'
-import { setPlatform } from '@mtcute/core/platform.js'
 
 import { downloadToFile } from './methods/download-file.js'
 import { downloadAsNodeStream } from './methods/download-node-stream.js'
-import { BunPlatform } from './platform.js'
 import { SqliteStorage } from './sqlite/index.js'
 import { BunCryptoProvider } from './utils/crypto.js'
 import { TcpTransport } from './utils/tcp.js'
+import { BunPlatform } from './platform.js'
 
 export type { TelegramClientOptions }
 
 export interface BaseTelegramClientOptions
-    extends PartialOnly<Omit<BaseTelegramClientOptionsBase, 'storage'>, 'transport' | 'crypto'> {
+    extends PartialOnly<Omit<BaseTelegramClientOptionsBase, 'storage'>, 'transport' | 'crypto' | 'platform'> {
     /**
      * Storage to use for this client.
      *
@@ -33,23 +32,14 @@ export interface BaseTelegramClientOptions
      * @default `"client.session"`
      */
     storage?: string | ITelegramStorageProvider
-
-    /**
-     * **ADVANCED USE ONLY**
-     *
-     * Whether to not set up the platform.
-     * This is useful if you call `setPlatform` yourself.
-     */
-    platformless?: boolean
 }
 
 export class BaseTelegramClient extends BaseTelegramClientBase {
     constructor(opts: BaseTelegramClientOptions) {
-        if (!opts.platformless) setPlatform(new BunPlatform())
-
         super({
             crypto: new BunCryptoProvider(),
             transport: TcpTransport,
+            platform: new BunPlatform(),
             ...opts,
             storage:
                 typeof opts.storage === 'string'
diff --git a/packages/bun/src/sqlite/sqlite.test.ts b/packages/bun/src/sqlite/sqlite.test.ts
index bc6504a8..84c32ed7 100644
--- a/packages/bun/src/sqlite/sqlite.test.ts
+++ b/packages/bun/src/sqlite/sqlite.test.ts
@@ -1,6 +1,7 @@
 import { afterAll, beforeAll, describe } from 'vitest'
 import { LogManager } from '@mtcute/core/utils.js'
 import {
+    defaultPlatform,
     testAuthKeysRepository,
     testKeyValueRepository,
     testPeersRepository,
@@ -14,7 +15,7 @@ if (import.meta.env.TEST_ENV === 'bun') {
         const storage = new SqliteStorage(':memory:')
 
         beforeAll(async () => {
-            storage.driver.setup(new LogManager())
+            storage.driver.setup(new LogManager(undefined, defaultPlatform), defaultPlatform)
             await storage.driver.load()
         })
 
diff --git a/packages/bun/src/worker.ts b/packages/bun/src/worker.ts
index 477e87e0..a3edd1a3 100644
--- a/packages/bun/src/worker.ts
+++ b/packages/bun/src/worker.ts
@@ -1,13 +1,11 @@
 import { Worker, parentPort } from 'node:worker_threads'
 
-import { setPlatform } from '@mtcute/core/platform.js'
 import type {
     ClientMessageHandler,
     RespondFn,
     SendFn,
     SomeWorker,
     TelegramWorkerOptions,
-    TelegramWorkerPortOptions,
     WorkerCustomMethods,
     WorkerMessageHandler,
 } from '@mtcute/core/worker.js'
@@ -16,9 +14,13 @@ import {
     TelegramWorkerPort as TelegramWorkerPortBase,
 } from '@mtcute/core/worker.js'
 
-import { BunPlatform } from './platform.js'
+import { BunPlatform } from './platform'
 
-export type { TelegramWorkerOptions, TelegramWorkerPortOptions, WorkerCustomMethods }
+export type { TelegramWorkerOptions, WorkerCustomMethods }
+
+export interface TelegramWorkerPortOptions {
+    worker: SomeWorker
+}
 
 let _registered = false
 
@@ -45,9 +47,11 @@ export class TelegramWorker<T extends WorkerCustomMethods> extends TelegramWorke
 }
 
 export class TelegramWorkerPort<T extends WorkerCustomMethods> extends TelegramWorkerPortBase<T> {
-    constructor(readonly options: TelegramWorkerPortOptions) {
-        setPlatform(new BunPlatform())
-        super(options)
+    constructor(options: TelegramWorkerPortOptions) {
+        super({
+            worker: options.worker,
+            platform: new BunPlatform(),
+        })
     }
 
     connectToWorker(worker: SomeWorker, handler: ClientMessageHandler): [SendFn, () => void] {
diff --git a/packages/convert/package.json b/packages/convert/package.json
index f02a51dc..7a4b2f4d 100644
--- a/packages/convert/package.json
+++ b/packages/convert/package.json
@@ -14,7 +14,7 @@
     "dependencies": {
         "@mtcute/core": "workspace:^",
         "@fuman/utils": "workspace:^",
-        "@fuman/ip": "workspace:^"
+        "@fuman/net": "workspace:^"
     },
     "devDependencies": {
         "@mtcute/test": "workspace:^"
diff --git a/packages/convert/src/telethon/parse.ts b/packages/convert/src/telethon/parse.ts
index c5df6f20..e4a4cc5e 100644
--- a/packages/convert/src/telethon/parse.ts
+++ b/packages/convert/src/telethon/parse.ts
@@ -1,6 +1,6 @@
 import { MtArgumentError } from '@mtcute/core'
 import { base64, typed } from '@fuman/utils'
-import { ip } from '@fuman/ip'
+import { ip } from '@fuman/net'
 
 import type { TelethonSession } from './types.js'
 
diff --git a/packages/convert/src/telethon/serialize.ts b/packages/convert/src/telethon/serialize.ts
index 6ba34d69..8bb5a27b 100644
--- a/packages/convert/src/telethon/serialize.ts
+++ b/packages/convert/src/telethon/serialize.ts
@@ -1,6 +1,6 @@
 import { MtArgumentError } from '@mtcute/core'
 import { base64, typed } from '@fuman/utils'
-import { ip } from '@fuman/ip'
+import { ip } from '@fuman/net'
 
 import type { TelethonSession } from './types.js'
 
diff --git a/packages/core/package.json b/packages/core/package.json
index aa532dcb..067763f3 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -12,8 +12,7 @@
         "./utils.js": "./src/utils/index.ts",
         "./client.js": "./src/highlevel/client.ts",
         "./worker.js": "./src/highlevel/worker/index.ts",
-        "./methods.js": "./src/highlevel/methods.ts",
-        "./platform.js": "./src/platform.ts"
+        "./methods.js": "./src/highlevel/methods.ts"
     },
     "scripts": {
         "build": "pnpm run -w build-package core",
diff --git a/packages/core/src/highlevel/base.ts b/packages/core/src/highlevel/base.ts
index 25270074..9d5ebbc4 100644
--- a/packages/core/src/highlevel/base.ts
+++ b/packages/core/src/highlevel/base.ts
@@ -23,6 +23,7 @@ import {
     writeStringSession,
 } from '../utils/index.js'
 import { LogManager } from '../utils/logger.js'
+import type { ICorePlatform } from '../types/platform'
 
 import type { ConnectionState, ITelegramClient, ServerUpdateHandler } from './client.types.js'
 import { AppConfigManager } from './managers/app-config-manager.js'
@@ -57,9 +58,11 @@ export class BaseTelegramClient implements ITelegramClient {
     readonly mt: MtClient
     readonly crypto: ICryptoProvider
     readonly storage: TelegramStorageManager
+    readonly platform: ICorePlatform
 
     constructor(readonly params: BaseTelegramClientOptions) {
-        this.log = this.params.logger ?? new LogManager('client')
+        this.log = this.params.logger ?? new LogManager('client', params.platform)
+        this.platform = this.params.platform
         this.mt = new MtClient({
             ...this.params,
             logger: this.log.create('mtproto'),
@@ -238,11 +241,12 @@ export class BaseTelegramClient implements ITelegramClient {
         if (defaultDcAuthKey && !force) return
 
         const data = typeof session === 'string' ? readStringSession(session) : session
+        const testMode = data.primaryDcs.main.testMode
 
-        if (data.testMode && !this.params.testMode) {
+        if (testMode && !this.params.testMode) {
             throw new Error(
                 'This session string is not for the current backend. '
-                + `Session is ${data.testMode ? 'test' : 'prod'}, `
+                + `Session is ${testMode ? 'test' : 'prod'}, `
                 + `but the client is ${this.params.testMode ? 'test' : 'prod'}`,
             )
         }
@@ -285,7 +289,6 @@ export class BaseTelegramClient implements ITelegramClient {
         return writeStringSession({
             version: 3,
             self: await this.storage.self.fetch(),
-            testMode: Boolean(this.params.testMode),
             primaryDcs,
             authKey,
         })
diff --git a/packages/core/src/highlevel/client.ts b/packages/core/src/highlevel/client.ts
index afa68454..f683e224 100644
--- a/packages/core/src/highlevel/client.ts
+++ b/packages/core/src/highlevel/client.ts
@@ -281,7 +281,7 @@ import { withParams } from './methods/misc/with-params.js'
 // from methods/_init.ts
 // @copy
 type TelegramClientOptions = (
-    | (PartialOnly<Omit<BaseTelegramClientOptions, 'storage'>, 'transport' | 'crypto'> & {
+    | (PartialOnly<Omit<BaseTelegramClientOptions, 'storage'>, 'transport' | 'crypto' | 'platform'> & {
         /**
          * Storage to use for this client.
          *
diff --git a/packages/core/src/highlevel/client.types.ts b/packages/core/src/highlevel/client.types.ts
index 4a3ff48d..70c7b9a0 100644
--- a/packages/core/src/highlevel/client.types.ts
+++ b/packages/core/src/highlevel/client.types.ts
@@ -4,6 +4,7 @@ import type Long from 'long'
 import type { ConnectionKind, RpcCallOptions } from '../network/index.js'
 import type { MustEqual, PublicPart } from '../types/utils.js'
 import type { Logger } from '../utils/logger.js'
+import type { ICorePlatform } from '../types/platform'
 
 import type { AppConfigManager } from './managers/app-config-manager.js'
 import type { TelegramStorageManager } from './storage/storage.js'
@@ -35,6 +36,7 @@ export interface ITelegramClient {
     readonly storage: PublicPart<TelegramStorageManager>
     readonly appConfig: PublicPart<AppConfigManager>
     readonly stopSignal: AbortSignal
+    readonly platform: ICorePlatform
 
     prepare(): Promise<void>
     connect(): Promise<void>
diff --git a/packages/core/src/highlevel/methods/_init.ts b/packages/core/src/highlevel/methods/_init.ts
index 5e702d14..cc192351 100644
--- a/packages/core/src/highlevel/methods/_init.ts
+++ b/packages/core/src/highlevel/methods/_init.ts
@@ -15,7 +15,7 @@ import { makeParsedUpdateHandler } from '../updates/parsed.js'
 
 // @copy
 type TelegramClientOptions = (
-    | (PartialOnly<Omit<BaseTelegramClientOptions, 'storage'>, 'transport' | 'crypto'> & {
+    | (PartialOnly<Omit<BaseTelegramClientOptions, 'storage'>, 'transport' | 'crypto' | 'platform'> & {
         /**
          * Storage to use for this client.
          *
diff --git a/packages/core/src/highlevel/methods/files/normalize-input-media.ts b/packages/core/src/highlevel/methods/files/normalize-input-media.ts
index 1380b6c9..6282a7b9 100644
--- a/packages/core/src/highlevel/methods/files/normalize-input-media.ts
+++ b/packages/core/src/highlevel/methods/files/normalize-input-media.ts
@@ -2,7 +2,6 @@ import Long from 'long'
 import { parseFileId, tdFileId } from '@mtcute/file-id'
 import { tl } from '@mtcute/tl'
 
-import { getPlatform } from '../../../platform.js'
 import { assertTypeIs } from '../../../utils/type-assertions.js'
 import type { ITelegramClient } from '../../client.types.js'
 import { isUploadedFile } from '../../types/files/uploaded-file.js'
@@ -321,7 +320,7 @@ export async function _normalizeInputMedia(
         } else if (typeof input === 'string' && input.match(/^file:/)) {
             await upload(input.substring(5))
         } else {
-            const parsed = typeof input === 'string' ? parseFileId(getPlatform(), input) : input
+            const parsed = typeof input === 'string' ? parseFileId(input) : input
 
             if (parsed.location._ === 'photo') {
                 return {
diff --git a/packages/core/src/highlevel/methods/files/upload-file.ts b/packages/core/src/highlevel/methods/files/upload-file.ts
index 113d2a40..f29b5211 100644
--- a/packages/core/src/highlevel/methods/files/upload-file.ts
+++ b/packages/core/src/highlevel/methods/files/upload-file.ts
@@ -3,7 +3,6 @@ import type { IReadable } from '@fuman/io'
 import { read } from '@fuman/io'
 import { AsyncLock } from '@fuman/utils'
 
-import { getPlatform } from '../../../platform.js'
 import { MtArgumentError } from '../../../types/errors.js'
 import { randomLong } from '../../../utils/long-utils.js'
 import type { ITelegramClient } from '../../client.types.js'
@@ -111,10 +110,8 @@ export async function uploadFile(
     let fileName = params.fileName
     let fileMime = params.fileMime
 
-    const platform = getPlatform()
-
-    if (platform.normalizeFile) {
-        const res = await platform.normalizeFile(file)
+    if (client.platform.normalizeFile) {
+        const res = await client.platform.normalizeFile(file)
 
         if (res?.file) {
             file = res.file
diff --git a/packages/core/src/highlevel/types/media/document.ts b/packages/core/src/highlevel/types/media/document.ts
index 8b66274b..9f1218bc 100644
--- a/packages/core/src/highlevel/types/media/document.ts
+++ b/packages/core/src/highlevel/types/media/document.ts
@@ -1,7 +1,6 @@
 import { tdFileId as td, toFileId, toUniqueFileId } from '@mtcute/file-id'
 import type { tl } from '@mtcute/tl'
 
-import { getPlatform } from '../../../platform.js'
 import { makeInspectable } from '../../utils/index.js'
 import { memoizeGetters } from '../../utils/memoize.js'
 import { FileLocation } from '../files/index.js'
@@ -125,7 +124,7 @@ export abstract class RawDocument extends FileLocation {
      * representing this document.
      */
     get fileId(): string {
-        return toFileId(getPlatform(), {
+        return toFileId({
             type: this._fileIdType(),
             dcId: this.raw.dcId,
             fileReference: this.raw.fileReference,
@@ -141,7 +140,7 @@ export abstract class RawDocument extends FileLocation {
      * Get a unique File ID representing this document.
      */
     get uniqueFileId(): string {
-        return toUniqueFileId(getPlatform(), td.FileType.Document, {
+        return toUniqueFileId(td.FileType.Document, {
             _: 'common',
             id: this.raw.id,
         })
diff --git a/packages/core/src/highlevel/types/media/thumbnail.ts b/packages/core/src/highlevel/types/media/thumbnail.ts
index 3bfd54d7..b4f4aad6 100644
--- a/packages/core/src/highlevel/types/media/thumbnail.ts
+++ b/packages/core/src/highlevel/types/media/thumbnail.ts
@@ -2,7 +2,6 @@ import Long from 'long'
 import { tdFileId as td, toFileId, toUniqueFileId } from '@mtcute/file-id'
 import type { tl } from '@mtcute/tl'
 
-import { getPlatform } from '../../../platform.js'
 import { MtArgumentError, MtTypeAssertionError } from '../../../types/errors.js'
 import { assertTypeIs } from '../../../utils/type-assertions.js'
 import { inflateSvgPath, strippedPhotoToJpg, svgPathToFile } from '../../utils/file-utils.js'
@@ -204,7 +203,7 @@ export class Thumbnail extends FileLocation {
         }
 
         if (this._media._ === 'stickerSet') {
-            return toFileId(getPlatform(), {
+            return toFileId({
                 type: td.FileType.Thumbnail,
                 dcId: this.dcId!,
                 fileReference: null,
@@ -222,7 +221,7 @@ export class Thumbnail extends FileLocation {
             })
         }
 
-        return toFileId(getPlatform(), {
+        return toFileId({
             type: this._media._ === 'photo' ? td.FileType.Photo : td.FileType.Thumbnail,
             dcId: this.dcId!,
             fileReference: this._media.fileReference,
@@ -251,7 +250,7 @@ export class Thumbnail extends FileLocation {
         }
 
         if (this._media._ === 'stickerSet') {
-            return toUniqueFileId(getPlatform(), td.FileType.Thumbnail, {
+            return toUniqueFileId(td.FileType.Thumbnail, {
                 _: 'photo',
                 id: Long.ZERO,
                 source: {
@@ -263,7 +262,7 @@ export class Thumbnail extends FileLocation {
             })
         }
 
-        return toUniqueFileId(getPlatform(), this._media._ === 'photo' ? td.FileType.Photo : td.FileType.Thumbnail, {
+        return toUniqueFileId(this._media._ === 'photo' ? td.FileType.Photo : td.FileType.Thumbnail, {
             _: 'photo',
             id: this._media.id,
             source: {
diff --git a/packages/core/src/highlevel/types/peers/chat-photo.ts b/packages/core/src/highlevel/types/peers/chat-photo.ts
index bbc6463a..a907314e 100644
--- a/packages/core/src/highlevel/types/peers/chat-photo.ts
+++ b/packages/core/src/highlevel/types/peers/chat-photo.ts
@@ -2,7 +2,6 @@ import Long from 'long'
 import { tdFileId, toFileId, toUniqueFileId } from '@mtcute/file-id'
 import type { tl } from '@mtcute/tl'
 
-import { getPlatform } from '../../../platform.js'
 import { MtArgumentError } from '../../../types/errors.js'
 import { toggleChannelIdMark } from '../../../utils/peer-utils.js'
 import { strippedPhotoToJpg } from '../../utils/file-utils.js'
@@ -62,7 +61,7 @@ export class ChatPhotoSize extends FileLocation {
                 throw new MtArgumentError('Input peer was invalid')
         }
 
-        return toFileId(getPlatform(), {
+        return toFileId({
             dcId: this.obj.dcId,
             type: tdFileId.FileType.ProfilePhoto,
             fileReference: null,
@@ -84,7 +83,7 @@ export class ChatPhotoSize extends FileLocation {
      * TDLib and Bot API compatible unique File ID representing this size
      */
     get uniqueFileId(): string {
-        return toUniqueFileId(getPlatform(), tdFileId.FileType.ProfilePhoto, {
+        return toUniqueFileId(tdFileId.FileType.ProfilePhoto, {
             _: 'photo',
             id: this.obj.photoId,
             // eslint-disable-next-line ts/no-unsafe-assignment
diff --git a/packages/core/src/highlevel/utils/convert-file-id.ts b/packages/core/src/highlevel/utils/convert-file-id.ts
index 6b739f48..4a334b5d 100644
--- a/packages/core/src/highlevel/utils/convert-file-id.ts
+++ b/packages/core/src/highlevel/utils/convert-file-id.ts
@@ -3,7 +3,6 @@ import { parseFileId, tdFileId as td } from '@mtcute/file-id'
 import type { tl } from '@mtcute/tl'
 
 import { parseMarkedPeerId } from '../../utils/peer-utils.js'
-import { getPlatform } from '../../platform.js'
 import { assertNever } from '../../types/utils.js'
 
 import FileType = td.FileType
@@ -45,7 +44,7 @@ function dialogPhotoToInputPeer(
  * @param fileId  File ID, either parsed or as a string
  */
 export function fileIdToInputWebFileLocation(fileId: string | FileId): tl.RawInputWebFileLocation {
-    if (typeof fileId === 'string') fileId = parseFileId(getPlatform(), fileId)
+    if (typeof fileId === 'string') fileId = parseFileId(fileId)
 
     if (fileId.location._ !== 'web') {
         throw new td.ConversionError('inputWebFileLocation')
@@ -65,7 +64,7 @@ export function fileIdToInputWebFileLocation(fileId: string | FileId): tl.RawInp
  * @param fileId  File ID, either parsed or as a string
  */
 export function fileIdToInputFileLocation(fileId: string | FileId): tl.TypeInputFileLocation {
-    if (typeof fileId === 'string') fileId = parseFileId(getPlatform(), fileId)
+    if (typeof fileId === 'string') fileId = parseFileId(fileId)
 
     const loc = fileId.location
 
@@ -219,7 +218,7 @@ export function fileIdToInputFileLocation(fileId: string | FileId): tl.TypeInput
  * @param fileId  File ID, either parsed or as a string
  */
 export function fileIdToInputDocument(fileId: string | FileId): tl.RawInputDocument {
-    if (typeof fileId === 'string') fileId = parseFileId(getPlatform(), fileId)
+    if (typeof fileId === 'string') fileId = parseFileId(fileId)
 
     if (
         fileId.location._ !== 'common'
@@ -256,7 +255,7 @@ export function fileIdToInputDocument(fileId: string | FileId): tl.RawInputDocum
  * @param fileId  File ID, either parsed or as a string
  */
 export function fileIdToInputPhoto(fileId: string | FileId): tl.RawInputPhoto {
-    if (typeof fileId === 'string') fileId = parseFileId(getPlatform(), fileId)
+    if (typeof fileId === 'string') fileId = parseFileId(fileId)
 
     if (fileId.location._ !== 'photo') {
         throw new td.ConversionError('inputPhoto')
@@ -281,7 +280,7 @@ export function fileIdToInputPhoto(fileId: string | FileId): tl.RawInputPhoto {
  * @param fileId  File ID, either parsed or as a string
  */
 export function fileIdToEncryptedFile(fileId: string | FileId): tl.RawInputEncryptedFile {
-    if (typeof fileId === 'string') fileId = parseFileId(getPlatform(), fileId)
+    if (typeof fileId === 'string') fileId = parseFileId(fileId)
 
     if (fileId.location._ !== 'common' || fileId.type !== FileType.Encrypted) {
         throw new td.ConversionError('inputEncryptedFile')
@@ -301,7 +300,7 @@ export function fileIdToEncryptedFile(fileId: string | FileId): tl.RawInputEncry
  * @param fileId  File ID, either parsed or as a string
  */
 export function fileIdToSecureFile(fileId: string | FileId): tl.RawInputSecureFile {
-    if (typeof fileId === 'string') fileId = parseFileId(getPlatform(), fileId)
+    if (typeof fileId === 'string') fileId = parseFileId(fileId)
 
     if (fileId.location._ !== 'common' || (fileId.type !== FileType.Secure && fileId.type !== FileType.SecureRaw)) {
         throw new td.ConversionError('inputSecureFile')
diff --git a/packages/core/src/highlevel/utils/query-batcher.test.ts b/packages/core/src/highlevel/utils/query-batcher.test.ts
index 17b32dad..f4585ac6 100644
--- a/packages/core/src/highlevel/utils/query-batcher.test.ts
+++ b/packages/core/src/highlevel/utils/query-batcher.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from 'vitest'
 import { StubTelegramClient } from '@mtcute/test'
+import { sleep } from '@fuman/utils'
 
-import { sleep } from '../../utils/misc-utils.js'
 import type { ITelegramClient } from '../client.types.js'
 
 import { batchedQuery } from './query-batcher.js'
diff --git a/packages/core/src/highlevel/worker/port.ts b/packages/core/src/highlevel/worker/port.ts
index 4c72a1fc..8c2688ba 100644
--- a/packages/core/src/highlevel/worker/port.ts
+++ b/packages/core/src/highlevel/worker/port.ts
@@ -6,6 +6,7 @@ import { LogManager } from '../../utils/logger.js'
 import type { ConnectionState, ITelegramClient, ServerUpdateHandler } from '../client.types.js'
 import { PeersIndex } from '../types/peers/peers-index.js'
 import type { RawUpdateHandler } from '../updates/types.js'
+import type { ICorePlatform } from '../../types/platform'
 
 import { AppConfigManagerProxy } from './app-config.js'
 import { WorkerInvoker } from './invoker.js'
@@ -15,10 +16,12 @@ import { TelegramStorageProxy } from './storage.js'
 
 export interface TelegramWorkerPortOptions {
     worker: SomeWorker
+    platform: ICorePlatform
 }
 
 export abstract class TelegramWorkerPort<Custom extends WorkerCustomMethods> implements ITelegramClient {
     readonly log: LogManager
+    readonly platform: ICorePlatform
 
     private _connection
     private _invoker
@@ -51,7 +54,8 @@ export abstract class TelegramWorkerPort<Custom extends WorkerCustomMethods> imp
     readonly stopSignal: AbortSignal = this._abortController.signal
 
     constructor(readonly options: TelegramWorkerPortOptions) {
-        this.log = new LogManager('worker')
+        this.log = new LogManager('worker', options.platform)
+        this.platform = options.platform
 
         this._connection = this.connectToWorker(this.options.worker, this._onMessage)
         this._invoker = new WorkerInvoker(this._connection[0])
diff --git a/packages/core/src/network/auth-key.test.ts b/packages/core/src/network/auth-key.test.ts
index 53182feb..5c137f17 100644
--- a/packages/core/src/network/auth-key.test.ts
+++ b/packages/core/src/network/auth-key.test.ts
@@ -1,6 +1,6 @@
 import Long from 'long'
 import { describe, expect, it, vi } from 'vitest'
-import { defaultTestCryptoProvider } from '@mtcute/test'
+import { defaultPlatform, defaultTestCryptoProvider } from '@mtcute/test'
 import type { TlBinaryReader, TlReaderMap } from '@mtcute/tl-runtime'
 import { hex, utf8 } from '@fuman/utils'
 
@@ -16,7 +16,7 @@ for (let i = 0; i < 256; i += 32) {
 
 describe('AuthKey', () => {
     async function create() {
-        const logger = new LogManager()
+        const logger = new LogManager(undefined, defaultPlatform)
         const readerMap: TlReaderMap = {}
         const crypto = await defaultTestCryptoProvider()
 
diff --git a/packages/core/src/network/client.ts b/packages/core/src/network/client.ts
index 19246b30..928e5c1c 100644
--- a/packages/core/src/network/client.ts
+++ b/packages/core/src/network/client.ts
@@ -26,6 +26,7 @@ import {
     defaultTestIpv6Dc,
     isTlRpcError,
 } from '../utils/index.js'
+import type { ICorePlatform } from '../types/platform.js'
 
 import { ConfigManager } from './config-manager.js'
 import type { NetworkManagerExtraParams, RpcCallOptions } from './network-manager.js'
@@ -57,6 +58,8 @@ export interface MtClientOptions {
      */
     crypto: ICryptoProvider
 
+    platform: ICorePlatform
+
     /**
      * Whether to use IPv6 datacenters
      * (IPv6 will be preferred when choosing a DC by id)
@@ -223,7 +226,7 @@ export class MtClient extends EventEmitter {
     constructor(readonly params: MtClientOptions) {
         super()
 
-        this.log = params.logger ?? new LogManager()
+        this.log = params.logger ?? new LogManager(undefined, params.platform)
 
         if (params.logLevel !== undefined) {
             this.log.mgr.level = params.logLevel
@@ -256,6 +259,7 @@ export class MtClient extends EventEmitter {
             log: this.log,
             readerMap: this._readerMap,
             writerMap: this._writerMap,
+            platform: params.platform,
             ...params.storageOptions,
         })
 
@@ -282,6 +286,7 @@ export class MtClient extends EventEmitter {
                 onNetworkChanged: connected => this.emit('networkChanged', connected),
                 onUpdate: upd => this.emit('update', upd),
                 stopSignal: this.stopSignal,
+                platform: params.platform,
                 ...params.network,
             },
             this._config,
diff --git a/packages/core/src/network/network-manager.ts b/packages/core/src/network/network-manager.ts
index c239075c..363da5a1 100644
--- a/packages/core/src/network/network-manager.ts
+++ b/packages/core/src/network/network-manager.ts
@@ -4,13 +4,13 @@ import type Long from 'long'
 import { type ReconnectionStrategy, defaultReconnectionStrategy } from '@fuman/net'
 import { Deferred } from '@fuman/utils'
 
-import { getPlatform } from '../platform.js'
 import type { StorageManager } from '../storage/storage.js'
 import { MtArgumentError, MtUnsupportedError, MtcuteError } from '../types/index.js'
 import type { ComposedMiddleware, Middleware } from '../utils/composer.js'
 import { composeMiddlewares } from '../utils/composer.js'
 import type { DcOptions, ICryptoProvider, Logger } from '../utils/index.js'
 import { assertTypeIs, isTlRpcError } from '../utils/type-assertions.js'
+import type { ICorePlatform } from '../types/platform'
 
 import type { ConfigManager } from './config-manager.js'
 import { basic as defaultMiddlewares } from './middlewares/default.js'
@@ -29,6 +29,7 @@ export interface NetworkManagerParams {
     storage: StorageManager
     crypto: ICryptoProvider
     log: Logger
+    platform: ICorePlatform
 
     enableErrorReporting: boolean
     apiId: number
@@ -253,6 +254,7 @@ export class DcConnectionManager {
             inactivityTimeout: this.manager.params.inactivityTimeout ?? 60_000,
             enableErrorReporting: this.manager.params.enableErrorReporting,
             salts: this._salts,
+            platform: this.manager.params.platform,
         })
 
         const mainParams = baseConnectionParams()
@@ -485,7 +487,7 @@ export class NetworkManager {
         readonly params: NetworkManagerParams & NetworkManagerExtraParams,
         readonly config: ConfigManager,
     ) {
-        const deviceModel = `mtcute on ${getPlatform().getDeviceModel()}`
+        const deviceModel = `mtcute on ${params.platform.getDeviceModel()}`
 
         this._initConnectionParams = {
             _: 'initConnection',
@@ -616,7 +618,7 @@ export class NetworkManager {
             throw new MtArgumentError('DC manager already exists')
         }
 
-        this._resetOnNetworkChange = getPlatform().onNetworkChanged?.(this.notifyNetworkChanged.bind(this))
+        this._resetOnNetworkChange = this.params.platform.onNetworkChanged?.(this.notifyNetworkChanged.bind(this))
 
         const dc = new DcConnectionManager(this, defaultDcs.main.id, defaultDcs, true)
         this._dcConnections.set(defaultDcs.main.id, dc)
diff --git a/packages/core/src/network/persistent-connection.ts b/packages/core/src/network/persistent-connection.ts
index 3c9663fd..a1f83dc6 100644
--- a/packages/core/src/network/persistent-connection.ts
+++ b/packages/core/src/network/persistent-connection.ts
@@ -149,6 +149,8 @@ export abstract class PersistentConnection extends EventEmitter {
     private async _onError(err: Error) {
         this._updateLogPrefix()
         this.onError(err)
+
+        return 'reconnect' as const
     }
 
     async changeTransport(transport: TelegramTransport): Promise<void> {
diff --git a/packages/core/src/network/session-connection.ts b/packages/core/src/network/session-connection.ts
index 20476498..14b5fee1 100644
--- a/packages/core/src/network/session-connection.ts
+++ b/packages/core/src/network/session-connection.ts
@@ -5,7 +5,6 @@ import type { TlReaderMap, TlWriterMap } from '@mtcute/tl-runtime'
 import { TlBinaryReader, TlBinaryWriter, TlSerializationCounter } from '@mtcute/tl-runtime'
 import { Deferred, u8 } from '@fuman/utils'
 
-import { getPlatform } from '../platform.js'
 import { MtArgumentError, MtTimeoutError, MtcuteError } from '../types/index.js'
 import { createAesIgeForMessageOld } from '../utils/crypto/mtproto.js'
 import type { ICryptoProvider } from '../utils/index.js'
@@ -16,6 +15,7 @@ import {
     removeFromLongArray,
     timers,
 } from '../utils/index.js'
+import type { ICorePlatform } from '../types/platform'
 
 import { doAuthorization } from './authorization.js'
 import type { MtprotoSession, PendingMessage, PendingRpc } from './mtproto-session.js'
@@ -39,6 +39,7 @@ export interface SessionConnectionParams extends PersistentConnectionParams {
 
     readerMap: TlReaderMap
     writerMap: TlWriterMap
+    platform: ICorePlatform
 }
 
 const TEMP_AUTH_KEY_EXPIRY = 86400 // 24 hours
@@ -97,7 +98,7 @@ export class SessionConnection extends PersistentConnection {
         this._handleRawMessage = this._handleRawMessage.bind(this)
 
         this._usePfs = this.params.usePfs ?? false
-        this._online = getPlatform().isOnline?.() ?? true
+        this._online = params.platform.isOnline?.() ?? true
     }
 
     private _online
diff --git a/packages/core/src/network/transports/obfuscated.test.ts b/packages/core/src/network/transports/obfuscated.test.ts
index f11afed4..9d6fdd47 100644
--- a/packages/core/src/network/transports/obfuscated.test.ts
+++ b/packages/core/src/network/transports/obfuscated.test.ts
@@ -1,23 +1,20 @@
 import { describe, expect, it, vi } from 'vitest'
-import { defaultTestCryptoProvider } from '@mtcute/test'
+import { defaultPlatform, defaultTestCryptoProvider } from '@mtcute/test'
 import { Bytes } from '@fuman/io'
 import { hex } from '@fuman/utils'
 
-import { getPlatform } from '../../platform.js'
 import { LogManager } from '../../utils/index.js'
 
 import { IntermediatePacketCodec } from './intermediate.js'
 import type { MtProxyInfo } from './obfuscated.js'
 import { ObfuscatedPacketCodec } from './obfuscated.js'
-import { TransportError } from './abstract'
-
-const p = getPlatform()
+import { TransportError } from './abstract.js'
 
 describe('ObfuscatedPacketCodec', () => {
     const create = async (randomSource?: string, proxy?: MtProxyInfo) => {
         const codec = new ObfuscatedPacketCodec(new IntermediatePacketCodec(), proxy)
         const crypto = await defaultTestCryptoProvider(randomSource)
-        codec.setup(crypto, new LogManager())
+        codec.setup(crypto, new LogManager(undefined, defaultPlatform))
 
         return [codec, crypto] as const
     }
@@ -191,7 +188,7 @@ describe('ObfuscatedPacketCodec', () => {
         const spyInnerReset = vi.spyOn(inner, 'reset')
 
         const codec = new ObfuscatedPacketCodec(inner)
-        codec.setup(await defaultTestCryptoProvider(), new LogManager())
+        codec.setup(await defaultTestCryptoProvider(), new LogManager(undefined, defaultPlatform))
 
         await codec.tag()
 
diff --git a/packages/core/src/platform.ts b/packages/core/src/platform.ts
deleted file mode 100644
index 15f005fe..00000000
--- a/packages/core/src/platform.ts
+++ /dev/null
@@ -1,49 +0,0 @@
-import type { UploadFileLike } from './highlevel/types/files/utils.js'
-import { MtUnsupportedError } from './types/errors.js'
-import type { MaybePromise } from './types/index.js'
-
-// todo: can we make this non-global?
-
-export interface ICorePlatform {
-    beforeExit: (fn: () => void) => () => void
-    log: (color: number, level: number, tag: string, fmt: string, args: unknown[]) => void
-    getDefaultLogLevel: () => number | null
-    getDeviceModel: () => string
-    normalizeFile?: (file: UploadFileLike) => MaybePromise<{
-        file?: UploadFileLike
-        fileSize?: number
-        fileName?: string
-    } | null>
-    onNetworkChanged?: (fn: (connected: boolean) => void) => () => void
-    isOnline?: () => boolean
-}
-
-// NB: when using with some bundlers (e.g. vite) re-importing this module will not return the same object
-// so we need to store the platform in a global object to be able to survive hot-reloads etc.
-// try to use Symbol if available, otherwise fallback to a string
-const platformKey = typeof Symbol !== 'undefined' ? Symbol.for('mtcute.platform') : '__MTCUTE_PLATFORM__'
-
-// eslint-disable-next-line
-let _platform: ICorePlatform | null = (globalThis as any)?.[platformKey] ?? null
-
-export function setPlatform(platform: ICorePlatform): void {
-    if (_platform) {
-        if (_platform.constructor !== platform.constructor) {
-            throw new MtUnsupportedError('Platform may not be changed at runtime!')
-        }
-
-        return
-    }
-
-    _platform = platform
-
-    ;(globalThis as any)[platformKey] = platform
-}
-
-export function getPlatform(): ICorePlatform {
-    if (!_platform) {
-        throw new MtUnsupportedError('Platform is not set! Have you instantiated the client?')
-    }
-
-    return _platform
-}
diff --git a/packages/core/src/storage/driver.ts b/packages/core/src/storage/driver.ts
index cb5432c4..a90f6b2c 100644
--- a/packages/core/src/storage/driver.ts
+++ b/packages/core/src/storage/driver.ts
@@ -1,3 +1,4 @@
+import type { ICorePlatform } from '../types/platform'
 import type { MaybePromise } from '../types/utils.js'
 import type { Logger } from '../utils/logger.js'
 
@@ -37,7 +38,7 @@ export interface IStorageDriver {
      * Setup the driver, passing the logger instance,
      * in case your driver needs it
      */
-    setup?: (log: Logger) => void
+    setup?: (log: Logger, platform: ICorePlatform) => void
 }
 
 /**
@@ -53,9 +54,11 @@ export abstract class BaseStorageDriver implements IStorageDriver {
     private _destroyed = false
 
     protected _log!: Logger
+    protected _platform!: ICorePlatform
 
-    setup(log: Logger): void {
+    setup(log: Logger, platform: ICorePlatform): void {
         this._log = log.create('sqlite')
+        this._platform = platform
     }
 
     protected get loaded(): boolean {
diff --git a/packages/core/src/storage/service/utils.test-utils.ts b/packages/core/src/storage/service/utils.test-utils.ts
index abd40a43..445c3ffc 100644
--- a/packages/core/src/storage/service/utils.test-utils.ts
+++ b/packages/core/src/storage/service/utils.test-utils.ts
@@ -1,5 +1,6 @@
 import { __tlReaderMap } from '@mtcute/tl/binary/reader.js'
 import { __tlWriterMap } from '@mtcute/tl/binary/writer.js'
+import { defaultPlatform } from '@mtcute/test'
 
 import { LogManager } from '../../utils/logger.js'
 import { MemoryStorageDriver } from '../memory/driver.js'
@@ -7,7 +8,7 @@ import { MemoryStorageDriver } from '../memory/driver.js'
 import type { ServiceOptions } from './base.js'
 
 export function testServiceOptions(): ServiceOptions {
-    const logger = new LogManager()
+    const logger = new LogManager(undefined, defaultPlatform)
     logger.level = 0
 
     return {
diff --git a/packages/core/src/storage/sqlite/driver.ts b/packages/core/src/storage/sqlite/driver.ts
index 323f3fde..6a8a8616 100644
--- a/packages/core/src/storage/sqlite/driver.ts
+++ b/packages/core/src/storage/sqlite/driver.ts
@@ -1,4 +1,3 @@
-import { getPlatform } from '../../platform.js'
 import { BaseStorageDriver } from '../driver.js'
 
 import type { ISqliteDatabase, ISqliteStatement } from './types.js'
@@ -136,7 +135,7 @@ export abstract class BaseSqliteStorageDriver extends BaseStorageDriver {
 
         this.db.transaction(() => this._initialize())()
 
-        this._cleanup = getPlatform().beforeExit(() => {
+        this._cleanup = this._platform.beforeExit(() => {
             this._save()
             this._destroy()
         })
diff --git a/packages/core/src/storage/storage.ts b/packages/core/src/storage/storage.ts
index 11b3dde9..6006cbec 100644
--- a/packages/core/src/storage/storage.ts
+++ b/packages/core/src/storage/storage.ts
@@ -1,8 +1,8 @@
 import type { TlReaderMap, TlWriterMap } from '@mtcute/tl-runtime'
 
-import { getPlatform } from '../platform.js'
 import { asyncResettable } from '../utils/index.js'
 import type { Logger } from '../utils/logger.js'
+import type { ICorePlatform } from '../types/platform'
 
 import type { IMtStorageProvider } from './provider.js'
 import { AuthKeysService } from './service/auth-keys.js'
@@ -13,6 +13,7 @@ import type { IStorageDriver } from './driver.js'
 
 interface StorageManagerOptions {
     provider: IMtStorageProvider
+    platform: ICorePlatform
     log: Logger
     readerMap: TlReaderMap
     writerMap: TlWriterMap
@@ -44,6 +45,7 @@ export interface StorageManagerExtraOptions {
 export class StorageManager {
     readonly provider: IMtStorageProvider
     readonly driver: IStorageDriver
+    readonly platform: ICorePlatform
     readonly log: Logger
     readonly dcs: DefaultDcsService
     readonly salts: FutureSaltsService
@@ -51,6 +53,7 @@ export class StorageManager {
 
     constructor(readonly options: StorageManagerOptions & StorageManagerExtraOptions) {
         this.provider = this.options.provider
+        this.platform = this.options.platform
         this.driver = this.provider.driver
         this.log = this.options.log.create('storage')
 
@@ -69,10 +72,10 @@ export class StorageManager {
     private _cleanupRestore?: () => void
 
     private _load = asyncResettable(async () => {
-        this.driver.setup?.(this.log)
+        this.driver.setup?.(this.log, this.platform)
 
         if (this.options.cleanup ?? true) {
-            this._cleanupRestore = getPlatform().beforeExit(() => {
+            this._cleanupRestore = this.platform.beforeExit(() => {
                 this._destroy().catch(err => this.log.error('cleanup error: %e', err))
             })
         }
diff --git a/packages/core/src/types/index.ts b/packages/core/src/types/index.ts
index a7b27468..3931f831 100644
--- a/packages/core/src/types/index.ts
+++ b/packages/core/src/types/index.ts
@@ -1,3 +1,4 @@
 export * from './errors.js'
 export * from './peers.js'
 export * from './utils.js'
+export * from './platform.js'
diff --git a/packages/core/src/types/platform.ts b/packages/core/src/types/platform.ts
new file mode 100644
index 00000000..f1611180
--- /dev/null
+++ b/packages/core/src/types/platform.ts
@@ -0,0 +1,17 @@
+import type { UploadFileLike } from '../highlevel/types/files/utils.js'
+
+import type { MaybePromise } from './index.js'
+
+export interface ICorePlatform {
+    beforeExit: (fn: () => void) => () => void
+    log: (color: number, level: number, tag: string, fmt: string, args: unknown[]) => void
+    getDefaultLogLevel: () => number | null
+    getDeviceModel: () => string
+    normalizeFile?: (file: UploadFileLike) => MaybePromise<{
+        file?: UploadFileLike
+        fileSize?: number
+        fileName?: string
+    } | null>
+    onNetworkChanged?: (fn: (connected: boolean) => void) => () => void
+    isOnline?: () => boolean
+}
diff --git a/packages/core/src/utils/logger.test.ts b/packages/core/src/utils/logger.test.ts
index 3ed825b7..90a117bc 100644
--- a/packages/core/src/utils/logger.test.ts
+++ b/packages/core/src/utils/logger.test.ts
@@ -1,12 +1,13 @@
 import Long from 'long'
 import { describe, expect, it, vi } from 'vitest'
 import { tl } from '@mtcute/tl'
+import { defaultPlatform } from '@mtcute/test'
 
 import { LogManager } from './logger.js'
 
 describe('logger', () => {
     const createManager = () => {
-        const mgr = new LogManager()
+        const mgr = new LogManager(undefined, defaultPlatform)
         mgr.level = LogManager.INFO
 
         const spy = vi.fn<typeof mgr.handler>()
diff --git a/packages/core/src/utils/logger.ts b/packages/core/src/utils/logger.ts
index 763d3aef..78d34180 100644
--- a/packages/core/src/utils/logger.ts
+++ b/packages/core/src/utils/logger.ts
@@ -1,8 +1,7 @@
 import { tl } from '@mtcute/tl'
 import { hex } from '@fuman/utils'
 
-import type { ICorePlatform } from '../platform.js'
-import { getPlatform } from '../platform.js'
+import type { ICorePlatform } from '../types/platform.js'
 
 import { isTlRpcError } from './type-assertions.js'
 
@@ -160,19 +159,17 @@ export class LogManager extends Logger {
     static DEBUG = 4
     static VERBOSE = 5
 
-    readonly platform: ICorePlatform
     level: number
     handler: (color: number, level: number, tag: string, fmt: string, args: unknown[]) => void
 
-    constructor(tag = 'base') {
+    constructor(tag = 'base', platform: ICorePlatform) {
         // workaround because we cant pass this to super
         // eslint-disable-next-line ts/no-unsafe-argument
         super(null as any, tag)
         ;(this as any).mgr = this
 
-        this.platform = getPlatform()
-        this.level = this.platform.getDefaultLogLevel() ?? DEFAULT_LOG_LEVEL
-        this.handler = this.platform.log.bind(this.platform)
+        this.level = platform.getDefaultLogLevel() ?? DEFAULT_LOG_LEVEL
+        this.handler = platform.log.bind(platform)
     }
 
     private _filter: (tag: string) => boolean = defaultFilter
diff --git a/packages/deno/src/client.ts b/packages/deno/src/client.ts
index edd02cd5..3b729b78 100644
--- a/packages/deno/src/client.ts
+++ b/packages/deno/src/client.ts
@@ -11,17 +11,17 @@ import {
     BaseTelegramClient as BaseTelegramClientBase,
     TelegramClient as TelegramClientBase,
 } from '@mtcute/core/client.js'
-import { setPlatform } from '@mtcute/core/platform.js'
 
 import { downloadToFile } from './methods/download-file.js'
 import { DenoPlatform } from './platform.js'
 import { SqliteStorage } from './sqlite/index.js'
 import { DenoCryptoProvider } from './utils/crypto.js'
+import { TcpTransport } from './utils/tcp.js'
 
 export type { TelegramClientOptions }
 
 export interface BaseTelegramClientOptions
-    extends PartialOnly<Omit<BaseTelegramClientOptionsBase, 'storage'>, 'transport' | 'crypto'> {
+    extends PartialOnly<Omit<BaseTelegramClientOptionsBase, 'storage'>, 'transport' | 'crypto' | 'platform'> {
     /**
      * Storage to use for this client.
      *
@@ -31,23 +31,14 @@ export interface BaseTelegramClientOptions
      * @default `"client.session"`
      */
     storage?: string | ITelegramStorageProvider
-
-    /**
-     * **ADVANCED USE ONLY**
-     *
-     * Whether to not set up the platform.
-     * This is useful if you call `setPlatform` yourself.
-     */
-    platformless?: boolean
 }
 
 export class BaseTelegramClient extends BaseTelegramClientBase {
     constructor(opts: BaseTelegramClientOptions) {
-        if (!opts.platformless) setPlatform(new DenoPlatform())
-
         super({
             crypto: new DenoCryptoProvider(),
-            transport: {} as any, // todo
+            transport: TcpTransport,
+            platform: new DenoPlatform(),
             ...opts,
             storage:
                 typeof opts.storage === 'string'
diff --git a/packages/deno/src/platform.ts b/packages/deno/src/platform.ts
index 4f8f4200..70af8609 100644
--- a/packages/deno/src/platform.ts
+++ b/packages/deno/src/platform.ts
@@ -1,4 +1,4 @@
-import type { ICorePlatform } from '@mtcute/core/platform.js'
+import type { ICorePlatform } from '@mtcute/core'
 
 import { defaultLoggingHandler } from './common-internals-web/logging.js'
 import { beforeExit } from './utils/exit-hook.js'
diff --git a/packages/deno/src/sqlite/sqlite.test.ts b/packages/deno/src/sqlite/sqlite.test.ts
index fc5ec5fd..bc78ecf4 100644
--- a/packages/deno/src/sqlite/sqlite.test.ts
+++ b/packages/deno/src/sqlite/sqlite.test.ts
@@ -1,6 +1,7 @@
 import { afterAll, beforeAll, describe } from 'vitest'
 import { LogManager } from '@mtcute/core/utils.js'
 import {
+    defaultPlatform,
     testAuthKeysRepository,
     testKeyValueRepository,
     testPeersRepository,
@@ -17,7 +18,7 @@ if (import.meta.env.TEST_ENV === 'deno') {
         const storage = new SqliteStorage(':memory:')
 
         beforeAll(async () => {
-            storage.driver.setup(new LogManager())
+            storage.driver.setup(new LogManager(undefined, defaultPlatform), defaultPlatform)
             await storage.driver.load()
         })
 
diff --git a/packages/deno/src/worker.ts b/packages/deno/src/worker.ts
index dfa2782d..3cf4ef50 100644
--- a/packages/deno/src/worker.ts
+++ b/packages/deno/src/worker.ts
@@ -1,11 +1,9 @@
-import { setPlatform } from '@mtcute/core/platform.js'
 import type {
     ClientMessageHandler,
     RespondFn,
     SendFn,
     SomeWorker,
     TelegramWorkerOptions,
-    TelegramWorkerPortOptions,
     WorkerCustomMethods,
     WorkerMessageHandler,
 } from '@mtcute/core/worker.js'
@@ -16,8 +14,10 @@ import {
 
 import { DenoPlatform } from './platform.js'
 
-export type { TelegramWorkerOptions, TelegramWorkerPortOptions, WorkerCustomMethods }
-
+export type { TelegramWorkerOptions, WorkerCustomMethods }
+export interface TelegramWorkerPortOptions {
+    worker: SomeWorker
+}
 let _registered = false
 
 export class TelegramWorker<T extends WorkerCustomMethods> extends TelegramWorkerBase<T> {
@@ -44,9 +44,11 @@ export class TelegramWorker<T extends WorkerCustomMethods> extends TelegramWorke
 const platform = new DenoPlatform()
 
 export class TelegramWorkerPort<T extends WorkerCustomMethods> extends TelegramWorkerPortBase<T> {
-    constructor(readonly options: TelegramWorkerPortOptions) {
-        setPlatform(platform)
-        super(options)
+    constructor(options: TelegramWorkerPortOptions) {
+        super({
+            worker: options.worker,
+            platform,
+        })
     }
 
     connectToWorker(worker: SomeWorker, handler: ClientMessageHandler): [SendFn, () => void] {
diff --git a/packages/node/src/client.ts b/packages/node/src/client.ts
index 7c563f96..07e06905 100644
--- a/packages/node/src/client.ts
+++ b/packages/node/src/client.ts
@@ -11,15 +11,13 @@ import {
     BaseTelegramClient as BaseTelegramClientBase,
     TelegramClient as TelegramClientBase,
 } from '@mtcute/core/client.js'
-import { setPlatform } from '@mtcute/core/platform.js'
 
-import { NodePlatform } from './common-internals-node/platform.js'
 import { downloadToFile } from './methods/download-file.js'
 import { downloadAsNodeStream } from './methods/download-node-stream.js'
 import { SqliteStorage } from './sqlite/index.js'
 import { NodeCryptoProvider } from './utils/crypto.js'
 import { TcpTransport } from './utils/tcp.js'
-// import { TcpTransport } from './utils/tcp.js'
+import { NodePlatform } from './common-internals-node/platform.js'
 
 export type { TelegramClientOptions }
 
@@ -34,7 +32,7 @@ try {
 } catch {}
 
 export interface BaseTelegramClientOptions
-    extends PartialOnly<Omit<BaseTelegramClientOptionsBase, 'storage'>, 'transport' | 'crypto'> {
+    extends PartialOnly<Omit<BaseTelegramClientOptionsBase, 'storage'>, 'transport' | 'crypto' | 'platform'> {
     /**
      * Storage to use for this client.
      *
@@ -45,23 +43,15 @@ export interface BaseTelegramClientOptions
      */
     storage?: string | ITelegramStorageProvider
 
-    /**
-     * **ADVANCED USE ONLY**
-     *
-     * Whether to not set up the platform.
-     * This is useful if you call `setPlatform` yourself.
-     */
-    platformless?: boolean
 }
 
 export class BaseTelegramClient extends BaseTelegramClientBase {
     constructor(opts: BaseTelegramClientOptions) {
-        if (!opts.platformless) setPlatform(new NodePlatform())
-
         super({
             // eslint-disable-next-line
             crypto: nativeCrypto ? new nativeCrypto() : new NodeCryptoProvider(),
             transport: TcpTransport,
+            platform: new NodePlatform(),
             ...opts,
             storage:
                 typeof opts.storage === 'string'
diff --git a/packages/node/src/common-internals-node/platform.ts b/packages/node/src/common-internals-node/platform.ts
index 06ac456a..e626d1bd 100644
--- a/packages/node/src/common-internals-node/platform.ts
+++ b/packages/node/src/common-internals-node/platform.ts
@@ -1,14 +1,12 @@
 import * as os from 'node:os'
 
-import type { ICorePlatform } from '@mtcute/core/platform.js'
+import type { ICorePlatform } from '@mtcute/core'
 
 import { normalizeFile } from '../utils/normalize-file.js'
 
 import { beforeExit } from './exit-hook.js'
 import { defaultLoggingHandler } from './logging.js'
 
-const toBuffer = (buf: Uint8Array): Buffer => Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength)
-
 export class NodePlatform implements ICorePlatform {
     // ICorePlatform
     declare log: typeof defaultLoggingHandler
diff --git a/packages/node/src/sqlite/sqlite.test.ts b/packages/node/src/sqlite/sqlite.test.ts
index 4a356f39..dbafe56a 100644
--- a/packages/node/src/sqlite/sqlite.test.ts
+++ b/packages/node/src/sqlite/sqlite.test.ts
@@ -1,6 +1,7 @@
 import { afterAll, beforeAll, describe } from 'vitest'
 import { LogManager } from '@mtcute/core/utils.js'
 import {
+    defaultPlatform,
     testAuthKeysRepository,
     testKeyValueRepository,
     testPeersRepository,
@@ -14,7 +15,7 @@ if (import.meta.env.TEST_ENV === 'node') {
         const storage = new SqliteStorage(':memory:')
 
         beforeAll(async () => {
-            storage.driver.setup(new LogManager())
+            storage.driver.setup(new LogManager(undefined, defaultPlatform), defaultPlatform)
             await storage.driver.load()
         })
 
diff --git a/packages/node/src/worker.ts b/packages/node/src/worker.ts
index cbffe1e8..f5e9ae5b 100644
--- a/packages/node/src/worker.ts
+++ b/packages/node/src/worker.ts
@@ -1,13 +1,11 @@
 import { Worker, parentPort } from 'node:worker_threads'
 
-import { setPlatform } from '@mtcute/core/platform.js'
 import type {
     ClientMessageHandler,
     RespondFn,
     SendFn,
     SomeWorker,
     TelegramWorkerOptions,
-    TelegramWorkerPortOptions,
     WorkerCustomMethods,
     WorkerMessageHandler,
 } from '@mtcute/core/worker.js'
@@ -18,7 +16,11 @@ import {
 
 import { NodePlatform } from './common-internals-node/platform.js'
 
-export type { TelegramWorkerOptions, TelegramWorkerPortOptions, WorkerCustomMethods }
+export type { TelegramWorkerOptions, WorkerCustomMethods }
+
+export interface TelegramWorkerPortOptions {
+    worker: SomeWorker
+}
 
 let _registered = false
 
@@ -45,9 +47,11 @@ export class TelegramWorker<T extends WorkerCustomMethods> extends TelegramWorke
 }
 
 export class TelegramWorkerPort<T extends WorkerCustomMethods> extends TelegramWorkerPortBase<T> {
-    constructor(readonly options: TelegramWorkerPortOptions) {
-        setPlatform(new NodePlatform())
-        super(options)
+    constructor(options: TelegramWorkerPortOptions) {
+        super({
+            worker: options.worker,
+            platform: new NodePlatform(),
+        })
     }
 
     connectToWorker(worker: SomeWorker, handler: ClientMessageHandler): [SendFn, () => void] {
diff --git a/packages/test/src/client.test.ts b/packages/test/src/client.test.ts
index 074305f4..b07a1882 100644
--- a/packages/test/src/client.test.ts
+++ b/packages/test/src/client.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from 'vitest'
-import { getPlatform } from '@mtcute/core/platform.js'
+import { hex } from '@fuman/utils'
 
 import { StubTelegramClient } from './client.js'
 import { createStub } from './stub.js'
@@ -25,7 +25,7 @@ describe('client stub', () => {
             const client = new StubTelegramClient()
 
             client.onRawMessage((msg) => {
-                log.push(`message ctor=${getPlatform().hexEncode(msg.subarray(0, 4))}`)
+                log.push(`message ctor=${hex.encode(msg.subarray(0, 4))}`)
                 client.close().catch(() => {})
             })
 
diff --git a/packages/test/src/client.ts b/packages/test/src/client.ts
index cc600ed8..f099855c 100644
--- a/packages/test/src/client.ts
+++ b/packages/test/src/client.ts
@@ -3,7 +3,7 @@ import { IntermediatePacketCodec, tl } from '@mtcute/core'
 import type { BaseTelegramClientOptions } from '@mtcute/core/client.js'
 import { BaseTelegramClient } from '@mtcute/core/client.js'
 
-import { defaultCryptoProvider } from './platform.js'
+import { defaultCryptoProvider, defaultPlatform } from './platform.js'
 import { StubMemoryTelegramStorage } from './storage.js'
 // import { StubTelegramTransport } from './transport.js'
 import type { InputResponder } from './types.js'
@@ -57,6 +57,7 @@ export class StubTelegramClient extends BaseTelegramClient {
                 packetCodec: () => new IntermediatePacketCodec(),
             },
             crypto: defaultCryptoProvider,
+            platform: defaultPlatform,
             ...params,
         })
     }
diff --git a/packages/web/src/client.ts b/packages/web/src/client.ts
index 9e35b1ab..5b463cc6 100644
--- a/packages/web/src/client.ts
+++ b/packages/web/src/client.ts
@@ -7,17 +7,16 @@ import {
     BaseTelegramClient as BaseTelegramClientBase,
     TelegramClient as TelegramClientBase,
 } from '@mtcute/core/client.js'
-import { setPlatform } from '@mtcute/core/platform.js'
 
 import { WebCryptoProvider } from './crypto.js'
 import { IdbStorage } from './idb/index.js'
-import { WebPlatform } from './platform.js'
 import { WebSocketTransport } from './websocket.js'
+import { WebPlatform } from './platform.js'
 
 export type { TelegramClientOptions }
 
 export interface BaseTelegramClientOptions
-    extends PartialOnly<Omit<BaseTelegramClientOptionsBase, 'storage'>, 'transport' | 'crypto'> {
+    extends PartialOnly<Omit<BaseTelegramClientOptionsBase, 'storage'>, 'transport' | 'crypto' | 'platform'> {
     /**
      * Storage to use for this client.
      *
@@ -27,23 +26,14 @@ export interface BaseTelegramClientOptions
      * @default `"client.session"`
      */
     storage?: string | ITelegramStorageProvider
-
-    /**
-     * **ADVANCED USE ONLY**
-     *
-     * Whether to not set up the platform.
-     * This is useful if you call `setPlatform` yourself.
-     */
-    platformless?: boolean
 }
 
 export class BaseTelegramClient extends BaseTelegramClientBase {
     constructor(opts: BaseTelegramClientOptions) {
-        if (!opts.platformless) setPlatform(new WebPlatform())
-
         super({
             crypto: new WebCryptoProvider(),
             transport: new WebSocketTransport(),
+            platform: new WebPlatform(),
             ...opts,
             storage:
                 typeof opts.storage === 'string'
diff --git a/packages/web/src/platform.ts b/packages/web/src/platform.ts
index 25583d63..26fadf86 100644
--- a/packages/web/src/platform.ts
+++ b/packages/web/src/platform.ts
@@ -1,4 +1,4 @@
-import type { ICorePlatform } from '@mtcute/core/platform.js'
+import type { ICorePlatform } from '@mtcute/core'
 
 import { defaultLoggingHandler } from './common-internals-web/logging.js'
 import { beforeExit } from './exit-hook.js'
diff --git a/packages/web/src/worker.ts b/packages/web/src/worker.ts
index b7b2d2da..c3636fb7 100644
--- a/packages/web/src/worker.ts
+++ b/packages/web/src/worker.ts
@@ -1,12 +1,10 @@
 /* eslint-disable no-restricted-globals */
-import { setPlatform } from '@mtcute/core/platform.js'
 import type {
     ClientMessageHandler,
     RespondFn,
     SendFn,
     SomeWorker,
     TelegramWorkerOptions,
-    TelegramWorkerPortOptions,
     WorkerCustomMethods,
     WorkerMessageHandler,
 } from '@mtcute/core/worker.js'
@@ -17,8 +15,10 @@ import {
 
 import { WebPlatform } from './platform.js'
 
-export type { TelegramWorkerOptions, TelegramWorkerPortOptions, WorkerCustomMethods }
-
+export type { TelegramWorkerOptions, WorkerCustomMethods }
+export interface TelegramWorkerPortOptions {
+    worker: SomeWorker
+}
 let _registered = false
 
 export class TelegramWorker<T extends WorkerCustomMethods> extends TelegramWorkerBase<T> {
@@ -103,12 +103,14 @@ export class TelegramWorker<T extends WorkerCustomMethods> extends TelegramWorke
     }
 }
 
-const platform = new WebPlatform()
+const platform = /* #__PURE__ */ new WebPlatform()
 
 export class TelegramWorkerPort<T extends WorkerCustomMethods> extends TelegramWorkerPortBase<T> {
-    constructor(readonly options: TelegramWorkerPortOptions) {
-        setPlatform(platform)
-        super(options)
+    constructor(options: TelegramWorkerPortOptions) {
+        super({
+            worker: options.worker,
+            platform,
+        })
     }
 
     connectToWorker(worker: SomeWorker, handler: ClientMessageHandler): [SendFn, () => void] {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e0321e78..208717ed 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -132,9 +132,9 @@ importers:
 
   packages/convert:
     dependencies:
-      '@fuman/ip':
+      '@fuman/net':
         specifier: workspace:^
-        version: link:../../private/fuman/packages/ip
+        version: link:../../private/fuman/packages/net
       '@fuman/utils':
         specifier: workspace:^
         version: link:../../private/fuman/packages/utils