Linux Socket Programming by Example PHẦN 5 docx
Linux Socket Programming by Example PHẦN 5 docx
... Failed.
350 : */
351 : static int
352 : rpn_opr(char *oper) {
353 : int x;
354 : static struct {
355 : char *oper;
356 : rpn_spec func;
357 : } spec[] = {
358 : { "dup", rpn_dup },
Linux Socket Programming ... Programming by Example - Warren W. Gay
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250 : * RESULTS:
251 : * 1. The randomly generated prime
252 : * number (actually, only a high
253 : * pr...
Linux Socket Programming by Example PHẦN 8 docx
... links:
/etc/rc.d/rc3.d/S50inet
Linux Socket Programming by Example - Warren W. Gay
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Table 16.1. Security Methods and Weaknesses
Security
Method
Weakness
by chance, brute force, or by knowing
information ... let's now dive into network security
as it applies to socket programming.
Linux Socket Programming by Example - Warren W. Gay
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Listing 16.3 shows...
Linux Socket Programming by Example PHẦN 1 pot
... adr_unix.sun_path-1] = 0;
52 :
53 : len_unix = SUN_LEN(&adr_unix);
54 :
55 : /* Now make first byte null */
56 : adr_unix.sun_path[0] = 0;
57 :
58 : /*
Linux Socket Programming by Example - Warren W. ... simple example of these
two different byte orderings.
Figure 2.4. Here is an example of the basic big- and little-endian
byte ordering.
Linux Socket Programmin...
Linux Socket Programming by Example PHẦN 2 ppt
... Allocations
Class Lowest Highest Netmask
A
10.0.0.0 10. 255 . 255 . 255 255 .0.0.0
B
172.16.0.0 172.31. 255 . 255 255 . 255 .0.0
C
192.168.0.0 192.168. 255 . 255 255 . 255 . 255 .0
Your choice of a class A, B, or C IP number ... class = 'C';
58 : netmask = " 255 . 255 . 255 .0";
59 : } else if ( (msb & 0xF0) == 0xE0 ) {
60: class = 'D';
61: netmask = "...
Linux Socket Programming by Example PHẦN 3 potx
... assume that kernel buffer
Linux Socket Programming by Example - Warren W. Gay
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55:
56 : if ( z == -1 )
57 : bail("bind()");
58 :
59 : /* Display all of our bound sockets */
60: system("netstat ... "127.0.0.23";
53 : }
54 :
55 : /*
56 : * Create a socket address, to use
Linux Socket Programming by Example - Warren W. Gay
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it. Funct...
Linux Socket Programming by Example PHẦN 4 ppt
... ",stderr);
24: fputs(on_what,stderr);
25: fputc('\n',stderr);
26: exit(1);
Linux Socket Programming by Example - Warren W. Gay
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The pointer returned by getprotobynumber(3) is only valid until ... srvr_addr = argv[1];
52 : } else {
53 : /* Use default address: */
54 : srvr_addr = "127.0.0.1";
55 : }
56 :
57 : /*
58 : * If the port number is given...
Linux Socket Programming by Example PHẦN 6 pot
... Stack ptr */
50 : FILE *rx; /* Recv FILE */
51 : FILE *tx; /* Xmit FILE */
52 : } ClientInfo;
53 :
54 : ClientInfo client[MAX_CLIENTS];
55 :
56 : /*
57 : * This function reports the error and
58 : * exits ... AF_INET */
51 : int len_inet; /* length */
52 : int s = -1; /* Socket */
53 : int c = -1; /* Client socket */
54 : FILE *rx = NULL; /* Read stream */
55 : FILE *tx = NU...
Linux Socket Programming by Example PHẦN 7 pdf
... sleep(1);
54 :
55 : iband(s,"Linus begat Linux, ");
56 : sleep(1);
57 :
58 : iband(s,"and the Penguins");
59 : sleep(1);
60:
Linux Socket Programming by Example - Warren W. Gay
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As ... sockaddr_in adr_clnt;
50 : int len_inet;
51 :
52 : /*
53 : * Create a TCP/IP socket to use:
54 : */
55 : s = socket( PF_INET,SOCK_STREAM,0);
56 : if ( s == -1...
Linux Socket Programming by Example PHẦN 9 pot
... provider.
Linux Socket Programming by Example - Warren W. Gay
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50 : /*
51 : * Access has been granted: send socket
52 : * to client.
53 : *
54 : * ARGUMENTS:
55 : * c Client socket
56 : * port Port ... buf[]:
55 : */
56 : msgh.msg_control = buf;
57 : msgh.msg_controllen = sizeof buf;
58 :
Linux Socket Programming by Example - Warren W. Gay
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51 : * No...
Linux Socket Programming by Example PHẦN 10 ppsx
... 127. 255 . 255 . 255
7 24
B
128.0.0.0 191. 255 . 255 . 255
14 16
C
192.0.0.0 223. 255 . 255 . 255
21 8
D
224.0.0.0 239. 255 . 255 . 255
28 N/A
E
240.0.0.0 247. 255 . 255 . 255
27 N/A
Linux Socket Programming by Example ... (line 53 ).
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Index
Appendix A. Socket Function
Quick Reference
Socket- Specific Functi...