diff --git a/MTBackupAddressSignals.m b/MTBackupAddressSignals.m
index e27344d358..f0b1732783 100644
--- a/MTBackupAddressSignals.m
+++ b/MTBackupAddressSignals.m
@@ -162,7 +162,7 @@ static NSData *base64_decode(NSString *str) {
     NSData *getConfigData = nil;
     MTRequestDatacenterAddressListParser responseParser = [currentContext.serialization requestDatacenterAddressWithData:&getConfigData];
     
-    [request setPayload:getConfigData metadata:@"getConfig" responseParser:responseParser];
+    [request setPayload:getConfigData metadata:@"getConfig" shortMetadata:@"getConfig" responseParser:responseParser];
     
     __weak MTContext *weakCurrentContext = currentContext;
     return [[MTSignal alloc] initWithGenerator:^id<MTDisposable>(MTSubscriber *subscriber) {
diff --git a/MTGzip.h b/MTGzip.h
new file mode 100644
index 0000000000..3c255592ba
--- /dev/null
+++ b/MTGzip.h
@@ -0,0 +1,11 @@
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface MTGzip : NSObject
+    
++ (NSData * _Nullable)decompress:(NSData *)data;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/MTGzip.m b/MTGzip.m
new file mode 100644
index 0000000000..34737816fa
--- /dev/null
+++ b/MTGzip.m
@@ -0,0 +1,53 @@
+#import "MTGzip.h"
+
+#import <zlib.h>
+
+@implementation MTGzip
+    
++ (NSData * _Nullable)decompress:(NSData *)data {
+    const int kMemoryChunkSize = 1024;
+    
+    NSUInteger length = [data length];
+    int windowBits = 15 + 32; //Default + gzip header instead of zlib header
+    int retCode;
+    unsigned char output[kMemoryChunkSize];
+    uInt gotBack;
+    NSMutableData *result;
+    z_stream stream;
+    
+    if ((length == 0) || (length > UINT_MAX)) //FIXME: Support 64 bit inputs
+        return nil;
+    
+    bzero(&stream, sizeof(z_stream));
+    stream.avail_in = (uInt)length;
+    stream.next_in = (unsigned char*)[data bytes];
+    
+    retCode = inflateInit2(&stream, windowBits);
+    if(retCode != Z_OK)
+    {
+        NSLog(@"%s: inflateInit2() failed with error %i", __PRETTY_FUNCTION__, retCode);
+        return nil;
+    }
+    
+    result = [NSMutableData dataWithCapacity:(length * 4)];
+    do
+    {
+        stream.avail_out = kMemoryChunkSize;
+        stream.next_out = output;
+        retCode = inflate(&stream, Z_NO_FLUSH);
+        if ((retCode != Z_OK) && (retCode != Z_STREAM_END))
+        {
+            NSLog(@"%s: inflate() failed with error %i", __PRETTY_FUNCTION__, retCode);
+            inflateEnd(&stream);
+            return nil;
+        }
+        gotBack = kMemoryChunkSize - stream.avail_out;
+        if (gotBack > 0)
+        [result appendBytes:output length:gotBack];
+    } while( retCode == Z_OK);
+    inflateEnd(&stream);
+    
+    return (retCode == Z_STREAM_END ? result : nil);
+}
+
+@end
diff --git a/MTProtoKit/MTDatacenterAuthMessageService.m b/MTProtoKit/MTDatacenterAuthMessageService.m
index bdd432ff2b..9250845c65 100644
--- a/MTProtoKit/MTDatacenterAuthMessageService.m
+++ b/MTProtoKit/MTDatacenterAuthMessageService.m
@@ -240,7 +240,8 @@ typedef enum {
                 [reqPqBuffer appendInt32:(int32_t)0x60469778];
                 [reqPqBuffer appendBytes:_nonce.bytes length:_nonce.length];
                 
-                MTOutgoingMessage *message = [[MTOutgoingMessage alloc] initWithData:reqPqBuffer.data metadata:[NSString stringWithFormat:@"reqPq nonce:%@", _nonce] messageId:_currentStageMessageId messageSeqNo:_currentStageMessageSeqNo];
+                NSString *messageDescription = [NSString stringWithFormat:@"reqPq nonce:%@", _nonce];
+                MTOutgoingMessage *message = [[MTOutgoingMessage alloc] initWithData:reqPqBuffer.data metadata:messageDescription shortMetadata:messageDescription messageId:_currentStageMessageId messageSeqNo:_currentStageMessageSeqNo];
                 return [[MTMessageTransaction alloc] initWithMessagePayload:@[message] prepared:nil failed:nil completion:^(NSDictionary *messageInternalIdToTransactionId, NSDictionary *messageInternalIdToPreparedMessage, __unused NSDictionary *messageInternalIdToQuickAckId)
                 {
                     if (_stage == MTDatacenterAuthStagePQ && messageInternalIdToTransactionId[message.internalId] != nil && messageInternalIdToPreparedMessage[message.internalId] != nil)
@@ -263,7 +264,8 @@ typedef enum {
                 [reqDhBuffer appendInt64:_dhPublicKeyFingerprint];
                 [reqDhBuffer appendTLBytes:_dhEncryptedData];
                 
-                MTOutgoingMessage *message = [[MTOutgoingMessage alloc] initWithData:reqDhBuffer.data metadata:[NSString stringWithFormat:@"reqDh nonce:%@ serverNonce:%@ p:%@ q:%@ fingerprint:%llx", _nonce, _serverNonce, _dhP, _dhQ, _dhPublicKeyFingerprint] messageId:_currentStageMessageId messageSeqNo:_currentStageMessageSeqNo];
+                NSString *messageDescription = [NSString stringWithFormat:@"reqDh nonce:%@ serverNonce:%@ p:%@ q:%@ fingerprint:%llx", _nonce, _serverNonce, _dhP, _dhQ, _dhPublicKeyFingerprint];
+                MTOutgoingMessage *message = [[MTOutgoingMessage alloc] initWithData:reqDhBuffer.data metadata:messageDescription shortMetadata:messageDescription messageId:_currentStageMessageId messageSeqNo:_currentStageMessageSeqNo];
                 return [[MTMessageTransaction alloc] initWithMessagePayload:@[message] prepared:nil failed:nil completion:^(NSDictionary *messageInternalIdToTransactionId, NSDictionary *messageInternalIdToPreparedMessage, __unused NSDictionary *messageInternalIdToQuickAckId)
                 {
                     if (_stage == MTDatacenterAuthStageReqDH && messageInternalIdToTransactionId[message.internalId] != nil && messageInternalIdToPreparedMessage[message.internalId] != nil)
@@ -283,7 +285,7 @@ typedef enum {
                 [setDhParamsBuffer appendBytes:_serverNonce.bytes length:_serverNonce.length];
                 [setDhParamsBuffer appendTLBytes:_encryptedClientData];
                 
-                MTOutgoingMessage *message = [[MTOutgoingMessage alloc] initWithData:setDhParamsBuffer.data metadata:@"setDhParams" messageId:_currentStageMessageId messageSeqNo:_currentStageMessageSeqNo];
+                MTOutgoingMessage *message = [[MTOutgoingMessage alloc] initWithData:setDhParamsBuffer.data metadata:@"setDhParams" shortMetadata:@"setDhParams" messageId:_currentStageMessageId messageSeqNo:_currentStageMessageSeqNo];
                 return [[MTMessageTransaction alloc] initWithMessagePayload:@[message] prepared:nil failed:nil completion:^(NSDictionary *messageInternalIdToTransactionId, NSDictionary *messageInternalIdToPreparedMessage, __unused NSDictionary *messageInternalIdToQuickAckId)
                 {
                     if (_stage == MTDatacenterAuthStageKeyVerification && messageInternalIdToTransactionId[message.internalId] != nil && messageInternalIdToPreparedMessage[message.internalId] != nil)
diff --git a/MTProtoKit/MTDatacenterTransferAuthAction.m b/MTProtoKit/MTDatacenterTransferAuthAction.m
index db6e5af188..a650c2f752 100644
--- a/MTProtoKit/MTDatacenterTransferAuthAction.m
+++ b/MTProtoKit/MTDatacenterTransferAuthAction.m
@@ -96,7 +96,7 @@
     NSData *exportAuthRequestData = nil;
     MTExportAuthorizationResponseParser responseParser = [[context.serialization exportAuthorization:(int32_t)_destinationDatacenterId data:&exportAuthRequestData] copy];
     
-    [request setPayload:exportAuthRequestData metadata:@"exportAuthorization" responseParser:responseParser];
+    [request setPayload:exportAuthRequestData metadata:@"exportAuthorization" shortMetadata:@"exportAuthorization" responseParser:responseParser];
     
     __weak MTDatacenterTransferAuthAction *weakSelf = self;
     [request setCompleted:^(MTExportedAuthorizationData *result, __unused NSTimeInterval timestamp, id error)
@@ -133,7 +133,7 @@
     
     NSData *importAuthRequestData = [_context.serialization importAuthorization:dataId bytes:authData];
     
-    [request setPayload:importAuthRequestData metadata:@"importAuthorization" responseParser:^id (NSData *data)
+    [request setPayload:importAuthRequestData metadata:@"importAuthorization" shortMetadata:@"importAuthorization" responseParser:^id (NSData *data)
     {
         return @true;
     }];
diff --git a/MTProtoKit/MTDiscoverDatacenterAddressAction.m b/MTProtoKit/MTDiscoverDatacenterAddressAction.m
index f814760350..f22abb1502 100644
--- a/MTProtoKit/MTDiscoverDatacenterAddressAction.m
+++ b/MTProtoKit/MTDiscoverDatacenterAddressAction.m
@@ -103,7 +103,7 @@
             NSData *getConfigData = nil;
             MTRequestDatacenterAddressListParser responseParser = [_context.serialization requestDatacenterAddressWithData:&getConfigData];
             
-            [request setPayload:getConfigData metadata:@"getConfig" responseParser:responseParser];
+            [request setPayload:getConfigData metadata:@"getConfig" shortMetadata:@"getConfig" responseParser:responseParser];
             
             __weak MTDiscoverDatacenterAddressAction *weakSelf = self;
             [request setCompleted:^(MTDatacenterAddressListData *result, __unused NSTimeInterval completionTimestamp, id error)
diff --git a/MTProtoKit/MTLogging.h b/MTProtoKit/MTLogging.h
index c5f61f82b7..bf31305149 100644
--- a/MTProtoKit/MTLogging.h
+++ b/MTProtoKit/MTLogging.h
@@ -11,7 +11,9 @@ extern "C" {
 
 bool MTLogEnabled();
 void MTLog(NSString *format, ...);
+void MTShortLog(NSString *format, ...);
 void MTLogSetLoggingFunction(void (*function)(NSString *, va_list args));
+void MTLogSetShortLoggingFunction(void (*function)(NSString *, va_list args));
 void MTLogSetEnabled(bool);
 
 #ifdef __cplusplus
diff --git a/MTProtoKit/MTLogging.m b/MTProtoKit/MTLogging.m
index 415a3281f0..18429455a4 100644
--- a/MTProtoKit/MTLogging.m
+++ b/MTProtoKit/MTLogging.m
@@ -3,6 +3,7 @@
 #import "MTLogging.h"
 
 static void (*loggingFunction)(NSString *, va_list args) = NULL;
+static void (*shortLoggingFunction)(NSString *, va_list args) = NULL;
 static bool MTLogEnabledValue = true;
 
 bool MTLogEnabled() {
@@ -18,10 +19,23 @@ void MTLog(NSString *format, ...) {
     va_end(L);
 }
 
+void MTShortLog(NSString *format, ...) {
+    va_list L;
+    va_start(L, format);
+    if (shortLoggingFunction != NULL) {
+        shortLoggingFunction(format, L);
+    }
+    va_end(L);
+}
+
 void MTLogSetLoggingFunction(void (*function)(NSString *, va_list args)) {
     loggingFunction = function;
 }
 
+void MTLogSetShortLoggingFunction(void (*function)(NSString *, va_list args)) {
+    shortLoggingFunction = function;
+}
+
 void MTLogSetEnabled(bool enabled) {
     MTLogEnabledValue = enabled;
 }
diff --git a/MTProtoKit/MTOutgoingMessage.h b/MTProtoKit/MTOutgoingMessage.h
index a4bf94e894..159d08dc81 100644
--- a/MTProtoKit/MTOutgoingMessage.h
+++ b/MTProtoKit/MTOutgoingMessage.h
@@ -7,6 +7,7 @@
 @property (nonatomic, strong, readonly) id internalId;
 @property (nonatomic, strong, readonly) NSData *data;
 @property (nonatomic, strong, readonly) id metadata;
+@property (nonatomic, strong, readonly) id shortMetadata;
 @property (nonatomic, readonly) int64_t messageId;
 @property (nonatomic, readonly) int32_t messageSeqNo;
 @property (nonatomic) bool requiresConfirmation;
@@ -16,7 +17,7 @@
 
 @property (nonatomic, copy) id (^dynamicDecorator)(NSData *currentData, NSMutableDictionary *messageInternalIdToPreparedMessage);
 
-- (instancetype)initWithData:(NSData *)data metadata:(id)metadata;
-- (instancetype)initWithData:(NSData *)data metadata:(id)metadata messageId:(int64_t)messageId messageSeqNo:(int32_t)messageSeqNo;
+- (instancetype)initWithData:(NSData *)data metadata:(id)metadata shortMetadata:(id)shortMetadata;
+- (instancetype)initWithData:(NSData *)data metadata:(id)metadata shortMetadata:(id)shortMetadata messageId:(int64_t)messageId messageSeqNo:(int32_t)messageSeqNo;
 
 @end
diff --git a/MTProtoKit/MTOutgoingMessage.m b/MTProtoKit/MTOutgoingMessage.m
index ab44d65b4a..e1dd14fd3e 100644
--- a/MTProtoKit/MTOutgoingMessage.m
+++ b/MTProtoKit/MTOutgoingMessage.m
@@ -46,12 +46,12 @@
 
 @implementation MTOutgoingMessage
 
-- (instancetype)initWithData:(NSData *)data metadata:(id)metadata
+- (instancetype)initWithData:(NSData *)data metadata:(id)metadata shortMetadata:(id)shortMetadata
 {
-    return [self initWithData:data metadata:metadata messageId:0 messageSeqNo:0];
+    return [self initWithData:data metadata:metadata shortMetadata:shortMetadata messageId:0 messageSeqNo:0];
 }
 
-- (instancetype)initWithData:(NSData *)data metadata:(id)metadata messageId:(int64_t)messageId messageSeqNo:(int32_t)messageSeqNo
+- (instancetype)initWithData:(NSData *)data metadata:(id)metadata shortMetadata:(id)shortMetadata messageId:(int64_t)messageId messageSeqNo:(int32_t)messageSeqNo
 {
     self = [super init];
     if (self != nil)
@@ -59,6 +59,7 @@
         _internalId = [[MTOutgoingMessageInternalId alloc] init];
         _data = data;
         _metadata = metadata;
+        _shortMetadata = shortMetadata;
         _messageId = messageId;
         _messageSeqNo = messageSeqNo;
         _requiresConfirmation = true;
diff --git a/MTProtoKit/MTProto.m b/MTProtoKit/MTProto.m
index 2001204442..9e71aaf174 100644
--- a/MTProtoKit/MTProto.m
+++ b/MTProtoKit/MTProto.m
@@ -196,6 +196,7 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
             if (MTLogEnabled()) {
                 MTLog(@"[MTProto#%p@%p pause]", self, _context);
             }
+            MTShortLog(@"[MTProto#%p@%p pause]", self, _context);
             
             _mtState |= MTProtoStatePaused;
             
@@ -214,6 +215,7 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
             if (MTLogEnabled()) {
                 MTLog(@"[MTProto#%p@%p resume]", self, _context);
             }
+            MTShortLog(@"[MTProto#%p@%p resume]", self, _context);
             
             [self setMtState:_mtState & (~MTProtoStatePaused)];
             
@@ -338,12 +340,14 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
             if (MTLogEnabled()) {
                 MTLog(@"[MTProto#%p@%p authInfoForDatacenterWithId:%d is nil]", self, _context, _datacenterId);
             }
+            MTShortLog(@"[MTProto#%p@%p authInfoForDatacenterWithId:%d is nil]", self, _context, _datacenterId);
             if ((_mtState & MTProtoStateAwaitingDatacenterAuthorization) == 0) {
                 [self setMtState:_mtState | MTProtoStateAwaitingDatacenterAuthorization];
                 
                 if (MTLogEnabled()) {
                     MTLog(@"[MTProto#%p@%p requesting authInfo for %d]", self, _context, _datacenterId);
                 }
+                MTShortLog(@"[MTProto#%p@%p requesting authInfo for %d]", self, _context, _datacenterId);
                 [_context authInfoForDatacenterWithIdRequired:_datacenterId isCdn:_cdn];
             }
         }/* else if (!_useUnauthorizedMode && _useTempAuthKeys && [[_context authInfoForDatacenterWithId:_datacenterId] tempAuthKeyWithType:tempAuthKeyType] == nil) {
@@ -377,6 +381,7 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
         if (MTLogEnabled()) {
             MTLog(@"[MTProto#%p@%p resetting session]", self, _context);
         }
+        MTShortLog(@"[MTProto#%p@%p resetting session]", self, _context);
         
         if (_authInfo.authKeyId != 0 && !self.cdn) {
             [_context scheduleSessionCleanupForAuthKeyId:_authInfo.authKeyId sessionInfo:_sessionInfo];
@@ -426,6 +431,7 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
             if (MTLogEnabled()) {
                 MTLog(@"[MTProto#%p@%p begin time sync]", self, _context);
             }
+            MTShortLog(@"[MTProto#%p@%p begin time sync]", self, _context);
             
             MTTimeSyncMessageService *timeSyncService = [[MTTimeSyncMessageService alloc] init];
             timeSyncService.delegate = self;
@@ -458,6 +464,7 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
         if (MTLogEnabled()) {
             MTLog(@"[MTProto#%p@%p service tasks state: %d, resend: %s]", self, _context, _mtState, haveResendMessagesPending ? "yes" : "no");
         }
+        MTShortLog(@"[MTProto#%p@%p service tasks state: %d, resend: %s]", self, _context, _mtState, haveResendMessagesPending ? "yes" : "no");
         
         for (id<MTMessageService> messageService in _messageServices)
         {
@@ -508,6 +515,7 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
             if (MTLogEnabled()) {
                 MTLog(@"[MTProto#%p@%p service tasks state: %d, resend: %s]", self, _context, _mtState, "yes");
             }
+            MTShortLog(@"[MTProto#%p@%p service tasks state: %d, resend: %s]", self, _context, _mtState, "yes");
             
             for (id<MTMessageService> messageService in _messageServices)
             {
@@ -560,6 +568,7 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
                     if (MTLogEnabled()) {
                         MTLog(@"[MTProto#%p@%p service tasks state: %d, resend: %s]", self, _context, _mtState, "no");
                     }
+                    MTShortLog(@"[MTProto#%p@%p service tasks state: %d, resend: %s]", self, _context, _mtState, "no");
                     
                     for (id<MTMessageService> messageService in _messageServices)
                     {
@@ -859,6 +868,11 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
     return [[NSString alloc] initWithFormat:@"%@ (%" PRId64 "/%" PRId32 ")", message.metadata, message.messageId == 0 ? messageId : message.messageId, message.messageSeqNo == 0 ? message.messageSeqNo : messageSeqNo];
 }
 
+- (NSString *)outgoingShortMessageDescription:(MTOutgoingMessage *)message messageId:(int64_t)messageId messageSeqNo:(int32_t)messageSeqNo
+{
+    return [[NSString alloc] initWithFormat:@"%@ (%" PRId64 "/%" PRId32 ")", message.shortMetadata, message.messageId == 0 ? messageId : message.messageId, message.messageSeqNo == 0 ? message.messageSeqNo : messageSeqNo];
+}
+
 - (NSString *)incomingMessageDescription:(MTIncomingMessage *)message
 {
     return [[NSString alloc] initWithFormat:@"%@ (%" PRId64", %" PRId64"/%" PRId64")", message.body, message.messageId, message.authKeyId, message.sessionId];
@@ -938,7 +952,7 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
                         [msgsAckBuffer appendInt64:(int64_t)[nMessageId longLongValue]];
                     }
                     
-                    MTOutgoingMessage *outgoingMessage = [[MTOutgoingMessage alloc] initWithData:msgsAckBuffer.data metadata:@"msgsAck"];
+                    MTOutgoingMessage *outgoingMessage = [[MTOutgoingMessage alloc] initWithData:msgsAckBuffer.data metadata:@"msgsAck" shortMetadata:@"msgsAck"];
                     outgoingMessage.requiresConfirmation = false;
                     
                     [messageTransactions addObject:[[MTMessageTransaction alloc] initWithMessagePayload:@[outgoingMessage] prepared:nil failed:nil completion:^(__unused NSDictionary *messageInternalIdToTransactionId, NSDictionary *messageInternalIdToPreparedMessage, __unused NSDictionary *messageInternalIdToQuickAckId)
@@ -1013,6 +1027,8 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
                         }*/
                         MTLog(@"[MTProto#%p@%p preparing %@]", self, _context, messageDescription);
                     }
+                    NSString *shortMessageDescription = [self outgoingShortMessageDescription:outgoingMessage messageId:messageId messageSeqNo:messageSeqNo];
+                    MTShortLog(@"[MTProto#%p@%p preparing %@]", self, _context, shortMessageDescription);
                     
                     if (!monotonityViolated || _useUnauthorizedMode)
                     {
@@ -1057,6 +1073,7 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
                     if (MTLogEnabled()) {
                         MTLog(@"[MTProto#%p@%p client message id monotonity violated]", self, _context);
                     }
+                    MTShortLog(@"[MTProto#%p@%p client message id monotonity violated]", self, _context);
                     
                     [self resetSessionInfo];
                 }
@@ -1300,6 +1317,7 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
             if (MTLogEnabled()) {
                 MTLog(@"[MTProto#%p@%p sending time fix ping (%" PRId64 "/%" PRId32 ", %" PRId64 ")]", self, _context, timeFixMessageId, timeFixSeqNo, _sessionInfo.sessionId);
             }
+            MTShortLog(@"[MTProto#%p@%p sending time fix ping (%" PRId64 "/%" PRId32 ", %" PRId64 ")]", self, _context, timeFixMessageId, timeFixSeqNo, _sessionInfo.sessionId);
             
             [decryptedOs writeInt64:[_authInfo authSaltForMessageId:timeFixMessageId]]; // salt
             [decryptedOs writeInt64:_sessionInfo.sessionId];
@@ -1425,6 +1443,7 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
             if (MTLogEnabled()) {
                 MTLog(@"[MTProto#%p@%p sending temp key binding message (%" PRId64 "/%" PRId32 ") for %lld (%d)]", self, _context, bindingMessageId, bindingSeqNo, effectiveTempAuthKey.authKeyId, (int)tempAuthKeyType);
             }
+            MTShortLog(@"[MTProto#%p@%p sending temp key binding message (%" PRId64 "/%" PRId32 ") for %lld (%d)]", self, _context, bindingMessageId, bindingSeqNo, effectiveTempAuthKey.authKeyId, (int)tempAuthKeyType);
             
             [decryptedOs writeInt64:[_authInfo authSaltForMessageId:bindingMessageId]];
             [decryptedOs writeInt64:_sessionInfo.sessionId];
@@ -1545,6 +1564,7 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
         if (MTLogEnabled()) {
             MTLog(@"    container (%" PRId64 ") of (%@), in %" PRId64 "", containerMessageId, idsString, sessionInfo.sessionId);
         }
+        MTShortLog(@"    container (%" PRId64 ") of (%@), in %" PRId64 "", containerMessageId, idsString, sessionInfo.sessionId);
     }
     
     [decryptedOs writeInt64:salt];
@@ -2032,6 +2052,7 @@ static NSString *dumpHexString(NSData *data, int maxLength) {
             if (MTLogEnabled()) {
                 MTLog(@"[MTProto#%p@%p protocol error %" PRId32 "", self, _context, protocolErrorCode);
             }
+            MTShortLog(@"[MTProto#%p@%p protocol error %" PRId32 "", self, _context, protocolErrorCode);
             
             if (decodeResult != nil)
                 decodeResult(transactionId, false);
@@ -2083,6 +2104,7 @@ static NSString *dumpHexString(NSData *data, int maxLength) {
                             if (MTLogEnabled()) {
                                 MTLog(@"[MTProto#%p@%p received AUTH_KEY_PERM_EMPTY]", self, _context);
                             }
+                            MTShortLog(@"[MTProto#%p@%p received AUTH_KEY_PERM_EMPTY]", self, _context);
                             [self handleMissingKey:scheme.address];
                             [self requestSecureTransportReset];
                             
@@ -2095,6 +2117,7 @@ static NSString *dumpHexString(NSData *data, int maxLength) {
                 if (MTLogEnabled()) {
                     MTLog(@"[MTProto#%p@%p incoming data parse error, header: %d:%@]", self, _context, (int)decryptedData.length, dumpHexString(decryptedData, 128));
                 }
+                MTShortLog(@"[MTProto#%p@%p incoming data parse error, header: %d:%@]", self, _context, (int)decryptedData.length, dumpHexString(decryptedData, 128));
                 
                 [_context reportTransportSchemeFailureForDatacenterId:_datacenterId transportScheme:scheme];
                 [self transportTransactionsMayHaveFailed:transport transactionIds:@[transactionId]];
@@ -2116,6 +2139,7 @@ static NSString *dumpHexString(NSData *data, int maxLength) {
             if (MTLogEnabled()) {
                 MTLog(@"[MTProto#%p@%p couldn't decrypt incoming data]", self, _context);
             }
+            MTShortLog(@"[MTProto#%p@%p couldn't decrypt incoming data]", self, _context);
             
             if (decodeResult != nil)
                 decodeResult(transactionId, false);
@@ -2398,6 +2422,7 @@ static NSString *dumpHexString(NSData *data, int maxLength) {
         if (MTLogEnabled()) {
             MTLog(@"[MTProto#%p@%p received duplicate message %" PRId64 "]", self, _context, incomingMessage.messageId);
         }
+        MTShortLog(@"[MTProto#%p@%p received duplicate message %" PRId64 "]", self, _context, incomingMessage.messageId);
         [_sessionInfo scheduleMessageConfirmation:incomingMessage.messageId size:incomingMessage.size];
         
         if ([_sessionInfo scheduledMessageConfirmationsExceedSize:MTMaxUnacknowledgedMessageSize orCount:MTMaxUnacknowledgedMessageCount])
@@ -2529,6 +2554,7 @@ static NSString *dumpHexString(NSData *data, int maxLength) {
             if (MTLogEnabled()) {
                 MTLog(@"[MTProto#%p@%p detailed info %" PRId64 " is for %" PRId64 "", self, _context, incomingMessage.messageId, requestMessageId);
             }
+            MTShortLog(@"[MTProto#%p@%p detailed info %" PRId64 " is for %" PRId64 "", self, _context, incomingMessage.messageId, requestMessageId);
             
             for (id<MTMessageService> messageService in _messageServices)
             {
@@ -2551,6 +2577,7 @@ static NSString *dumpHexString(NSData *data, int maxLength) {
             if (MTLogEnabled()) {
                 MTLog(@"[MTProto#%p@%p will request message %" PRId64 "", self, _context, detailedInfoMessage.responseMessageId);
             }
+            MTShortLog(@"[MTProto#%p@%p will request message %" PRId64 "", self, _context, detailedInfoMessage.responseMessageId);
         }
         else
         {
@@ -2639,6 +2666,7 @@ static NSString *dumpHexString(NSData *data, int maxLength) {
                 if (MTLogEnabled()) {
                     MTLog(@"[MTProto#%p@%p bindTempAuthKey error %@]", self, _context, rpcError);
                 }
+                MTShortLog(@"[MTProto#%p@%p bindTempAuthKey error %@]", self, _context, rpcError);
                 
                 [self requestTransportTransaction];
             }
diff --git a/MTProtoKit/MTProtoKit.h b/MTProtoKit/MTProtoKit.h
index 5d906dfa37..673e3f08df 100644
--- a/MTProtoKit/MTProtoKit.h
+++ b/MTProtoKit/MTProtoKit.h
@@ -73,3 +73,4 @@ FOUNDATION_EXPORT const unsigned char MtProtoKitVersionString[];
 #import <MTProtoKit/AFURLConnectionOperation.h>
 #import <MTProtoKit/AFHTTPRequestOperation.h>
 #import <MTProtoKit/MTProxyConnectivity.h>
+#import <MTProtoKit/MTGzip.h>
diff --git a/MTProtoKit/MTRequest.h b/MTProtoKit/MTRequest.h
index d181a55abd..3cc58bf6ab 100644
--- a/MTProtoKit/MTRequest.h
+++ b/MTProtoKit/MTRequest.h
@@ -12,6 +12,7 @@
 
 @property (nonatomic, strong, readonly) NSData *payload;
 @property (nonatomic, strong, readonly) id metadata;
+@property (nonatomic, strong, readonly) id shortMetadata;
 @property (nonatomic, strong, readonly) id (^responseParser)(NSData *);
 
 @property (nonatomic, strong) NSArray *decorators;
@@ -29,6 +30,6 @@
 @property (nonatomic, copy) bool (^shouldContinueExecutionWithErrorContext)(MTRequestErrorContext *errorContext);
 @property (nonatomic, copy) bool (^shouldDependOnRequest)(MTRequest *anotherRequest);
 
-- (void)setPayload:(NSData *)payload metadata:(id)metadata responseParser:(id (^)(NSData *))responseParser;
+- (void)setPayload:(NSData *)payload metadata:(id)metadata shortMetadata:(id)shortMetadata responseParser:(id (^)(NSData *))responseParser;
 
 @end
diff --git a/MTProtoKit/MTRequest.m b/MTProtoKit/MTRequest.m
index 4dfead4bc5..bb7cd2d86e 100644
--- a/MTProtoKit/MTRequest.m
+++ b/MTProtoKit/MTRequest.m
@@ -59,10 +59,11 @@
     return self;
 }
 
-- (void)setPayload:(NSData *)payload metadata:(id)metadata responseParser:(id (^)(NSData *))responseParser
+- (void)setPayload:(NSData *)payload metadata:(id)metadata shortMetadata:(id)shortMetadata responseParser:(id (^)(NSData *))responseParser
 {
     _payload = payload;
     _metadata = metadata;
+    _shortMetadata = shortMetadata;
     _responseParser = [responseParser copy];
 }
 
diff --git a/MTProtoKit/MTRequestMessageService.h b/MTProtoKit/MTRequestMessageService.h
index cd39ffff27..9e896e513a 100644
--- a/MTProtoKit/MTRequestMessageService.h
+++ b/MTProtoKit/MTRequestMessageService.h
@@ -29,6 +29,8 @@
 
 @property (nonatomic, strong) MTApiEnvironment *apiEnvironment;
 @property (nonatomic) bool forceBackgroundRequests;
+    
+@property (nonatomic, copy) void (^didReceiveSoftAuthResetError)(void);
 
 - (instancetype)initWithContext:(MTContext *)context;
 
diff --git a/MTProtoKit/MTRequestMessageService.m b/MTProtoKit/MTRequestMessageService.m
index d526f728ee..fd3b68b1b1 100644
--- a/MTProtoKit/MTRequestMessageService.m
+++ b/MTProtoKit/MTRequestMessageService.m
@@ -276,7 +276,7 @@
         MTRequest *request = [[MTRequest alloc] init];
         __autoreleasing NSData *noopData = nil;
         MTRequestNoopParser responseParser = [[_context serialization] requestNoop:&noopData];
-        [request setPayload:noopData metadata:@"noop" responseParser:responseParser];
+        [request setPayload:noopData metadata:@"noop" shortMetadata:@"noop" responseParser:responseParser];
         
         [request setCompleted:^(__unused id result, __unused NSTimeInterval timestamp, __unused id error) {
         }];
@@ -416,7 +416,7 @@
                 messageSeqNo = request.requestContext.messageSeqNo;
             }
             
-            MTOutgoingMessage *outgoingMessage = [[MTOutgoingMessage alloc] initWithData:[self decorateRequestData:request initializeApi:requestsWillInitializeApi unresolvedDependencyOnRequestInternalId:&autoreleasingUnresolvedDependencyOnRequestInternalId] metadata:request.metadata messageId:messageId messageSeqNo:messageSeqNo];
+            MTOutgoingMessage *outgoingMessage = [[MTOutgoingMessage alloc] initWithData:[self decorateRequestData:request initializeApi:requestsWillInitializeApi unresolvedDependencyOnRequestInternalId:&autoreleasingUnresolvedDependencyOnRequestInternalId] metadata:request.metadata shortMetadata:request.shortMetadata messageId:messageId messageSeqNo:messageSeqNo];
             outgoingMessage.needsQuickAck = request.acknowledgementReceived != nil;
             outgoingMessage.hasHighPriority = request.hasHighPriority;
             
@@ -460,7 +460,8 @@
         [dropAnswerBuffer appendInt32:(int32_t)0x58e4a740];
         [dropAnswerBuffer appendInt64:dropContext.dropMessageId];
         
-        MTOutgoingMessage *outgoingMessage = [[MTOutgoingMessage alloc] initWithData:dropAnswerBuffer.data metadata:[NSString stringWithFormat:@"dropAnswer for %" PRId64, dropContext.dropMessageId] messageId:dropContext.messageId messageSeqNo:dropContext.messageSeqNo];
+        NSString *messageDecription = [NSString stringWithFormat:@"dropAnswer for %" PRId64, dropContext.dropMessageId];
+        MTOutgoingMessage *outgoingMessage = [[MTOutgoingMessage alloc] initWithData:dropAnswerBuffer.data metadata:messageDecription shortMetadata:messageDecription messageId:dropContext.messageId messageSeqNo:dropContext.messageSeqNo];
         outgoingMessage.requiresConfirmation = false;
         dropMessageIdToMessageInternalId[@(dropContext.dropMessageId)] = outgoingMessage.internalId;
         [messages addObject:outgoingMessage];
@@ -704,9 +705,11 @@
                                 authInfo = [authInfo withUpdatedAuthKeyAttributes:authKeyAttributes];
                                 [_context updateAuthInfoForDatacenterWithId:mtProto.datacenterId authInfo:authInfo];
                             }];
+                        } else if (rpcError.errorCode == 406) {
+                            if (_didReceiveSoftAuthResetError) {
+                                _didReceiveSoftAuthResetError();
+                            }
                         }
-                        
-//#warning TODO other service errors
                     }
                     
                     request.requestContext = nil;
diff --git a/MTProtoKit/MTResendMessageService.m b/MTProtoKit/MTResendMessageService.m
index 98090381da..ba3651d445 100644
--- a/MTProtoKit/MTResendMessageService.m
+++ b/MTProtoKit/MTResendMessageService.m
@@ -57,7 +57,7 @@
         
         NSData *resentMessagesRequestData = resendRequestBuffer.data;
         
-        MTOutgoingMessage *outgoingMessage = [[MTOutgoingMessage alloc] initWithData:resentMessagesRequestData metadata:@"resendMessages"];
+        MTOutgoingMessage *outgoingMessage = [[MTOutgoingMessage alloc] initWithData:resentMessagesRequestData metadata:@"resendMessages" shortMetadata:@"resendMessages"];
         outgoingMessage.requiresConfirmation = false;
         
         return [[MTMessageTransaction alloc] initWithMessagePayload:@[outgoingMessage] prepared:nil failed:nil completion:^(NSDictionary *messageInternalIdToTransactionId, NSDictionary *messageInternalIdToPreparedMessage, __unused NSDictionary *messageInternalIdToQuickAckId)
diff --git a/MTProtoKit/MTTcpTransport.m b/MTProtoKit/MTTcpTransport.m
index 5305f84379..c5a3d10cb3 100644
--- a/MTProtoKit/MTTcpTransport.m
+++ b/MTProtoKit/MTTcpTransport.m
@@ -620,7 +620,7 @@ static const NSTimeInterval MTTcpTransportSleepWatchdogTimeout = 60.0;
             [pingBuffer appendInt32:(int32_t)0x7abe77ec];
             [pingBuffer appendInt64:randomId];
             
-            MTOutgoingMessage *outgoingMessage = [[MTOutgoingMessage alloc] initWithData:pingBuffer.data metadata:@"ping"];
+            MTOutgoingMessage *outgoingMessage = [[MTOutgoingMessage alloc] initWithData:pingBuffer.data metadata:@"ping" shortMetadata:@"ping"];
             outgoingMessage.requiresConfirmation = false;
             
             __weak MTTcpTransport *weakSelf = self;
diff --git a/MTProtoKit/MTTimeSyncMessageService.m b/MTProtoKit/MTTimeSyncMessageService.m
index db7efd600b..a39efe07fb 100644
--- a/MTProtoKit/MTTimeSyncMessageService.m
+++ b/MTProtoKit/MTTimeSyncMessageService.m
@@ -59,7 +59,7 @@
         [getFutureSaltsBuffer appendInt32:(int32_t)0xb921bd04];
         [getFutureSaltsBuffer appendInt32:_futureSalts.count != 0 ? 1 : 32];
         
-        MTOutgoingMessage *outgoingMessage = [[MTOutgoingMessage alloc] initWithData:getFutureSaltsBuffer.data metadata:@"getFutureSalts"];
+        MTOutgoingMessage *outgoingMessage = [[MTOutgoingMessage alloc] initWithData:getFutureSaltsBuffer.data metadata:@"getFutureSalts" shortMetadata:@"getFutureSalts"];
         
         return [[MTMessageTransaction alloc] initWithMessagePayload:@[outgoingMessage] prepared:nil failed:nil completion:^(NSDictionary *messageInternalIdToTransactionId, NSDictionary *messageInternalIdToPreparedMessage, __unused NSDictionary *messageInternalIdToQuickAckId)
         {
diff --git a/MtProtoKit.xcodeproj/project.pbxproj b/MtProtoKit.xcodeproj/project.pbxproj
index 375d99ebba..38ea421192 100644
--- a/MtProtoKit.xcodeproj/project.pbxproj
+++ b/MtProtoKit.xcodeproj/project.pbxproj
@@ -28,6 +28,12 @@
 		D0119CCC20CAD65D00895300 /* PingFoundation.m in Sources */ = {isa = PBXBuildFile; fileRef = D0119CC820CAD65D00895300 /* PingFoundation.m */; };
 		D0119CCD20CAD65D00895300 /* PingFoundation.m in Sources */ = {isa = PBXBuildFile; fileRef = D0119CC820CAD65D00895300 /* PingFoundation.m */; };
 		D0119CCE20CAD65D00895300 /* PingFoundation.m in Sources */ = {isa = PBXBuildFile; fileRef = D0119CC820CAD65D00895300 /* PingFoundation.m */; };
+		D015E018225CD19E00CB9E8A /* MTGzip.h in Headers */ = {isa = PBXBuildFile; fileRef = D015E016225CD19E00CB9E8A /* MTGzip.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		D015E019225CD19E00CB9E8A /* MTGzip.h in Headers */ = {isa = PBXBuildFile; fileRef = D015E016225CD19E00CB9E8A /* MTGzip.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		D015E01A225CD19E00CB9E8A /* MTGzip.h in Headers */ = {isa = PBXBuildFile; fileRef = D015E016225CD19E00CB9E8A /* MTGzip.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		D015E01B225CD19E00CB9E8A /* MTGzip.m in Sources */ = {isa = PBXBuildFile; fileRef = D015E017225CD19E00CB9E8A /* MTGzip.m */; };
+		D015E01C225CD19E00CB9E8A /* MTGzip.m in Sources */ = {isa = PBXBuildFile; fileRef = D015E017225CD19E00CB9E8A /* MTGzip.m */; };
+		D015E01D225CD19E00CB9E8A /* MTGzip.m in Sources */ = {isa = PBXBuildFile; fileRef = D015E017225CD19E00CB9E8A /* MTGzip.m */; };
 		D0185E722089D265005E1A6C /* MTProxyConnectivity.h in Headers */ = {isa = PBXBuildFile; fileRef = D0185E702089D265005E1A6C /* MTProxyConnectivity.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		D0185E732089D265005E1A6C /* MTProxyConnectivity.h in Headers */ = {isa = PBXBuildFile; fileRef = D0185E702089D265005E1A6C /* MTProxyConnectivity.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		D0185E742089D265005E1A6C /* MTProxyConnectivity.h in Headers */ = {isa = PBXBuildFile; fileRef = D0185E702089D265005E1A6C /* MTProxyConnectivity.h */; settings = {ATTRIBUTES = (Public, ); }; };
@@ -617,6 +623,8 @@
 		D0119CC020CAD34800895300 /* MTConnectionProbing.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = MTConnectionProbing.m; sourceTree = "<group>"; };
 		D0119CC720CAD65D00895300 /* PingFoundation.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = PingFoundation.h; sourceTree = "<group>"; };
 		D0119CC820CAD65D00895300 /* PingFoundation.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = PingFoundation.m; sourceTree = "<group>"; };
+		D015E016225CD19E00CB9E8A /* MTGzip.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MTGzip.h; sourceTree = "<group>"; };
+		D015E017225CD19E00CB9E8A /* MTGzip.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = MTGzip.m; sourceTree = "<group>"; };
 		D0185E702089D265005E1A6C /* MTProxyConnectivity.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MTProxyConnectivity.h; sourceTree = "<group>"; };
 		D0185E712089D265005E1A6C /* MTProxyConnectivity.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = MTProxyConnectivity.m; sourceTree = "<group>"; };
 		D020FAF81D994E3100F279AA /* MTHttpRequestOperation.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = MTHttpRequestOperation.h; path = MTProtoKit/MTHttpRequestOperation.h; sourceTree = "<group>"; };
@@ -1085,6 +1093,8 @@
 				D0119CC820CAD65D00895300 /* PingFoundation.m */,
 				D0338737223BC115007A2CE4 /* MTPKCS.h */,
 				D0338738223BC115007A2CE4 /* MTPKCS.m */,
+				D015E016225CD19E00CB9E8A /* MTGzip.h */,
+				D015E017225CD19E00CB9E8A /* MTGzip.m */,
 			);
 			name = Utils;
 			sourceTree = "<group>";
@@ -1523,6 +1533,7 @@
 				D0CD981F1D74B99400F41187 /* MTResPqMessage.h in Headers */,
 				D0CD98E81D75C0BB00F41187 /* MTMessageService.h in Headers */,
 				D0B0DF621DD7E7A3003BA12D /* MTBag.h in Headers */,
+				D015E019225CD19E00CB9E8A /* MTGzip.h in Headers */,
 				D0CD98681D74B9E200F41187 /* MTContext.h in Headers */,
 				D0CD985B1D74B9BF00F41187 /* MTSetClientDhParamsResponseMessage.h in Headers */,
 				D0CD98741D74BA0100F41187 /* MTDiscoverDatacenterAddressAction.h in Headers */,
@@ -1699,6 +1710,7 @@
 				D0D1A0421ADD983C007D9ED6 /* MTFutureSaltsMessage.h in Headers */,
 				D0CB064B1ADC45B1005E298F /* MTRequest.h in Headers */,
 				D010DB811D70B3B90012AD96 /* MTAes.h in Headers */,
+				D015E018225CD19E00CB9E8A /* MTGzip.h in Headers */,
 				D0CB062C1ADC4575005E298F /* MTDatacenterAuthMessageService.h in Headers */,
 				D0CB061C1ADC4541005E298F /* MTInternalId.h in Headers */,
 			);
@@ -1723,6 +1735,7 @@
 				D0CD982D1D74B99500F41187 /* MTResPqMessage.h in Headers */,
 				D0CD98E91D75C0BB00F41187 /* MTMessageService.h in Headers */,
 				D0B0DF631DD7E7A4003BA12D /* MTBag.h in Headers */,
+				D015E01A225CD19E00CB9E8A /* MTGzip.h in Headers */,
 				D0CD98691D74B9E300F41187 /* MTContext.h in Headers */,
 				D0CD985F1D74B9BF00F41187 /* MTSetClientDhParamsResponseMessage.h in Headers */,
 				D0CD98751D74BA0100F41187 /* MTDiscoverDatacenterAddressAction.h in Headers */,
@@ -1910,16 +1923,16 @@
 					};
 					D079AB961AF39B8000076F59 = {
 						CreatedOnToolsVersion = 6.3.1;
-						LastSwiftMigration = 0930;
+						LastSwiftMigration = 1010;
 					};
 					D0CB05F61ADC4483005E298F = {
 						CreatedOnToolsVersion = 6.3;
-						LastSwiftMigration = 0930;
+						LastSwiftMigration = 1010;
 						ProvisioningStyle = Manual;
 					};
 					D0D2250A1B4D817B0085E26D = {
 						CreatedOnToolsVersion = 6.4;
-						LastSwiftMigration = 0930;
+						LastSwiftMigration = 1010;
 						ProvisioningStyle = Manual;
 					};
 					D0D225141B4D817B0085E26D = {
@@ -2090,6 +2103,7 @@
 				D0CD988E1D74BA5900F41187 /* MTDatacenterAddress.m in Sources */,
 				D0CD98521D74B9B700F41187 /* MTSetClientDhParamsResponseMessage.m in Sources */,
 				D0C932271E095D6A0074F044 /* MTNetworkUsageCalculationInfo.m in Sources */,
+				D015E01C225CD19E00CB9E8A /* MTGzip.m in Sources */,
 				D0CAF2CF1D75E25B0011F558 /* MTSignal.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -2189,6 +2203,7 @@
 				D0D1A0631ADD983C007D9ED6 /* MTServerDhInnerDataMessage.m in Sources */,
 				D0D1A0571ADD983C007D9ED6 /* MTNewSessionCreatedMessage.m in Sources */,
 				D0C932261E095D6A0074F044 /* MTNetworkUsageCalculationInfo.m in Sources */,
+				D015E01B225CD19E00CB9E8A /* MTGzip.m in Sources */,
 				D0CAF2CC1D75E24C0011F558 /* MTSignal.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -2288,6 +2303,7 @@
 				D0CD98931D74BA5A00F41187 /* MTDatacenterAddress.m in Sources */,
 				D0CD98571D74B9B700F41187 /* MTSetClientDhParamsResponseMessage.m in Sources */,
 				D0C932281E095D6A0074F044 /* MTNetworkUsageCalculationInfo.m in Sources */,
+				D015E01D225CD19E00CB9E8A /* MTGzip.m in Sources */,
 				D0CAF2D01D75E25B0011F558 /* MTSignal.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
diff --git a/MtProtoKitDynamic/MtProtoKitDynamic.h b/MtProtoKitDynamic/MtProtoKitDynamic.h
index 1dc7d2f3ea..71b8db618f 100644
--- a/MtProtoKitDynamic/MtProtoKitDynamic.h
+++ b/MtProtoKitDynamic/MtProtoKitDynamic.h
@@ -75,3 +75,4 @@ FOUNDATION_EXPORT const unsigned char MtProtoKitDynamicVersionString[];
 #import <MTProtoKitDynamic/AFHTTPRequestOperation.h>
 #import <MTProtoKitDynamic/MTProxyConnectivity.h>
 #import <MTProtoKitDynamic/MTPKCS.h>
+#import <MTProtoKitDynamic/MTGzip.h>
diff --git a/MtProtoKitMac/MtProtoKitMac.h b/MtProtoKitMac/MtProtoKitMac.h
index ab97ee1d2b..d3b518a1d9 100644
--- a/MtProtoKitMac/MtProtoKitMac.h
+++ b/MtProtoKitMac/MtProtoKitMac.h
@@ -74,3 +74,4 @@ FOUNDATION_EXPORT const unsigned char MtProtoKitMacVersionString[];
 #import <MtProtoKitMac/AFURLConnectionOperation.h>
 #import <MtProtoKitMac/AFHTTPRequestOperation.h>
 #import <MTProtoKitMac/MTProxyConnectivity.h>
+#import <MTProtoKitMac/MTGzip.h>