Characteristic not receiving all chunks of data

[pavankn]

I am trying to establish connection with a secure Digital Wallet using BLE . I am using a modified version of GattServer (attached)
The client which is a digital wallet on Android phone sends many chunks of data and i should receive the same on my Client2ServerCharacteristic but i receive just the lunk chunk of information

From BTMON: (Btmon Sees the Packets , The Last Data is 00757314 which is received by me ) ..
Wireshark is able to reassemble this dump

> ACL Data RX: Handle 3585 flags 0x02 dlen 27                                                                #236 [hci0] 35.621960
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #237 [hci0] 35.622618
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #238 [hci0] 35.623279
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #239 [hci0] 35.623949
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #240 [hci0] 35.624712
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #241 [hci0] 35.625339
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #242 [hci0] 35.625974
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #243 [hci0] 35.626730
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #244 [hci0] 35.627355
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #245 [hci0] 35.632511
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #246 [hci0] 35.633049
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #247 [hci0] 35.633734
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #248 [hci0] 35.634414
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #249 [hci0] 35.635083
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #250 [hci0] 35.635754
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #251 [hci0] 35.636440
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #252 [hci0] 35.637134
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #253 [hci0] 35.637809
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #254 [hci0] 35.638470
> ACL Data RX: Handle 3585 flags 0x01 dlen 6                                                                 #255 [hci0] 35.638970
      ATT: Write Command (0x52) len 514
        Handle: 0x00c7
          Data: 
> ACL Data RX: Handle 3585 flags 0x02 dlen 27                                                                #256 [hci0] 35.639735
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #257 [hci0] 35.640344
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #258 [hci0] 35.641001
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #259 [hci0] 35.641737
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #260 [hci0] 35.642366
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #261 [hci0] 35.643034
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #262 [hci0] 35.643735
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #263 [hci0] 35.644394
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #264 [hci0] 35.645058
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #265 [hci0] 35.645734
> ACL Data RX: Handle 3585 flags 0x01 dlen 22                                                                #266 [hci0] 35.647456
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #267 [hci0] 35.648035
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #268 [hci0] 35.648734
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #269 [hci0] 35.649370
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #270 [hci0] 35.650060
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #271 [hci0] 35.650736
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #272 [hci0] 35.651415
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #273 [hci0] 35.652086
> ACL Data RX: Handle 3585 flags 0x01 dlen 27                                                                #274 [hci0] 35.652784
> ACL Data RX: Handle 3585 flags 0x01 dlen 11                                                                #275 [hci0] 35.653307
      ATT: Write Command (0x52) len 514
        Handle: 0x00c7
          Data: 
> ACL Data RX: Handle 3585 flags 0x02 dlen 11                                                                #276 [hci0] 35.653852
      ATT: Write Command (0x52) len 6
        Handle: 0x00c7
          Data: 00757314

But on the characteristic, i just receive this last data , is there something wrong in my configuration ??

sudo dbus-monitor --system interface=org.bluez.GattCharacteristic1

method call time=1744433606.234999 sender=:1.176 -> destination=:1.228 serial=1088 path=/credenceid/service0/state; interface=org.bluez.GattCharacteristic1; member=WriteValue
   array of bytes [
      01
   ]
   array [
      dict entry(
         string "device"
         variant             object path "/org/bluez/hci0/dev_4B_02_AB_E4_B8_D9"
      )
      dict entry(
         string "link"
         variant             string "LE"
      )
      dict entry(
         string "mtu"
         variant             uint16 517
      )
   ]
method call time=1744433609.654247 sender=:1.176 -> destination=:1.228 serial=1089 path=/credenceid/service0/clientToServer; interface=org.bluez.GattCharacteristic1; member=WriteValue
   array of bytes [
      00 75 73 14
   ]
   array [
      dict entry(
         string "device"
         variant             object path "/org/bluez/hci0/dev_4B_02_AB_E4_B8_D9"
      )
      dict entry(
         string "link"
         variant             string "LE"
      )
      dict entry(
         string "mtu"
         variant             uint16 517
      )
   ]

BLE.zip