Exercise

Topic: Communicate with the server through the network, and count the number of occurrences of keywords in the RFC3261.txt file.

(Keywords are provided by the server, and the RFC3261.txt file is downloaded from the Internet. Please upload the answer to the server)

1. Preparations:

Add the import file, #include TCPIP_Sync.cpp

Use TCP, Server Port=7000, IP=140.113.170.78 to connect to the server

2. Steps:

a. Start_TCP_Client(&Sock,Port,IP);

b. Send(Sock, "REGISTER/Name/your number ", 0);

c. Receive "Registration Successful/KeyWord" in Thread Function

Keyword is the word we want to find

d. Find the occurrences of KeyWord 1, 2, 3, 4 in the RFC3261.txt file

e. Send the answer back to the server in the following format

sprintf(S1,"ANSWER/%d/%d/%d/%d", times 1, times 2, times 3, times 4);

send(Sock,S1,strlen(S1),0);

f. Receive response results.

3. Definition of number 1: *KeyWord* and case-insensitive

Definition of number 2: *KeyWord* and case must be distinguished

Definition of number 3: Independent KeyWord and case-insensitive, including KeyWord

Definition of number 4: independent KeyWord and case-sensitive, including KeyWord

Hint. Use fread() for times 1 and 2, and fscanf() for times 3 and 4