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/* the following routine will be called once (only) before any other */ /* entity A routines are called. You can use it to do any initialization */ void & init() { } /* Note that with simplex transfer from a-to-B, there is no Beuteut()*/ /* called from layer 3, when a packet arrives for layer 4 at Bº/ int int waition acti struct pkt teckati int salsulate cheskum // change the sequence and change the state. BESWAP(8) Bwaiting.ack 0: void Bingut(packet) struct pkt packet: { // If the checksum of the packet is not matching, ignore the packet and send NAK iffacket.sheskum != salsulate_sheskum(&packet)){ Britt!"\inst: Corrupted packet received. Reed and sending NAK.\n");

/* the following routine will be called once (only) before any other */ /* entity A routines are called. You can use it to do any initialization */ void & init() { } /* Note that with simplex transfer from a-to-B, there is no Beuteut()*/ /* called from layer 3, when a packet arrives for layer 4 at Bº/ int int waition acti struct pkt teckati int salsulate cheskum // change the sequence and change the state. BESWAP(8) Bwaiting.ack 0: void Bingut(packet) struct pkt packet: { // If the checksum of the packet is not matching, ignore the packet and send NAK iffacket.sheskum != salsulate_sheskum(&packet)){ Britt!"\inst: Corrupted packet received. Reed and sending NAK.\n");

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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/* the following routine will be called once (only) before any other */ /* entity A routines are called. You can use it to do any initialization */ void a joit!) { } /* Note that with simplex transfer from a-to-B, there is no Beutet() */ /* called from layer 3, when a packet arrives for layer 4 at B*/ int 559 int Bwaiting acti struct pkt last Recketi int calculate.sheskum // change the sequence and change the state. B.seq=SWAP(B.Seal: { Bwaiting.ads=0 void input(packet) struct pkt packet: // If the checksum of the packet is not matching, ignore the packet and send NAK iffeacket.sheskawm != calculate_shesksum(&packet)){ printf("\tBinet: Corrupted packet received. Dered and sending NAK.\n");
Transcribed Image Text:/* the following routine will be called once (only) before any other */ /* entity A routines are called. You can use it to do any initialization */ void a joit!) { } /* Note that with simplex transfer from a-to-B, there is no Beutet() */ /* called from layer 3, when a packet arrives for layer 4 at B*/ int 559 int Bwaiting acti struct pkt last Recketi int calculate.sheskum // change the sequence and change the state. B.seq=SWAP(B.Seal: { Bwaiting.ads=0 void input(packet) struct pkt packet: // If the checksum of the packet is not matching, ignore the packet and send NAK iffeacket.sheskawm != calculate_shesksum(&packet)){ printf("\tBinet: Corrupted packet received. Dered and sending NAK.\n");
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