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How to tell if a fragment is the last fragment?


Asked by King Schaefer on Dec 03, 2021 FAQ



More fragments (MF = 1 bit) – tells if more fragments ahead of this fragment i.e. if MF = 1, more fragments are ahead of this fragment and if MF = 0, it is the last fragment. Don’t fragment (DF = 1 bit) – if we don’t want the packet to be fragmented then DF is set i.e. DF = 1.
In this manner,
A: Sentence fragments can be detected by checking to see if they have all 3 of the elements required to make a complete sentence. If they are missing a subject, a verb or fail to express a complete thought then they are a sentence fragment.
Moreover, Total Length Field: After fragmenting, this field indicates the length of each fragment, not the length of the overall message. Normally, the fragment size is selected to match the MTU value in bytes after subtracting the IP header size of 20 bytes or more.
Indeed,
The last fragment of an IP datagram is identified using the "more fragments" flag. The "more fragment" flag is set to zero for the last fragment. How is the length of a complete IP datagram calculated from the received IP fragments?
And,
In the main activity, the onAttachFragment (Fragment fragment) method is called when a new fragment is attached to the activity. In this method, you can get the instance of the current fragment.