Makefile, TCPソケットサーバ, コマンドライン引数

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1 L11( Tue) : Time-stamp: Fri 12:28 JST hig ( ) make L11 (2017) 1 / 24

2 I, void die(char message) void die(char message[])... 1 #i n c l u d e <math. h> 2 / / 3 double y, z ; 4 y =1.3 exp ( 1. 3 ) ; 5 p r i n t f ( %f \n, y ) ; 6 z= 3.2 exp ( 3.2); 7 p r i n t f ( %f \n, z ) ; main.c L11 (2017) 2 / 24

3 main.c 1 #i n c l u d e l i b. h 2 / / 3 double y, z ; 4 y=f ( 1. 3 ) ; 5 z=f ( 3.2); lib.h 1 #i f n d e f LIB H 2 #d e f i n e LIB H 3 double f ( double x ) ; 4 #e n d i f lib.c 1 #i n c l u d e <math. h> 2 #i n c l u d e l i b. h 3 4 double f ( double x ){ 5 double a ; 6 a=x exp ( x ) ; 7 p r i n t f ( %f \n, a ) ; 8 r e t u r n a ; 9 } L11 (2017) 3 / 24

4 10 11 make Makefile L11 (2017) 4 / 24

5 ( ) ( ) fopen socket fopen connect / fscanf,fprintf recv,send fclose shutdown fclose close fopen-fscanf-fclose, open-read-close. L11 (2017) 5 / 24

6 s1 s=socket s2 bind s3 listen c1 sc=socket socket-server01 c2 connect s4, ws=accept c3s ( ) send/recv recv/send c4s shutdown(sc) shutdown(ws) c5s close(sc) close(ws) s5 s4 s ws. s., sleeping OS.,. II,.,. II, fork. L11 (2017) 6 / 24

7 L11 (2017) 7 / 24

8 netstat 1 $ n e t s t a t at 2 ( ) 3 Proto Q Q 4 tcp 0 0 l o c a l h o s t. localdom :6010 : LISTEN 5 tcp 0 0 : microsoft ds : LISTEN 6 tcp 0 0 s01cd : ssh : ESTABLISHED 7 tcp 0 0 s01cd : ssh ueh st. ryuk :50423 ESTABLISHED 8 tcp 0 0 s01cd :59322 s01svvhd02. dream. r : http ESTABLISHED 9 tcp 0 0 s01cd :36902 i f s 3 : nfs TIME WAIT 10 tcp 0 0 s01cd :46408 i f s 3 : sunrpc TIME WAIT 11 tcp 0 0 s01cd :59320 s01svvhd02. dream. r : http TIME WAIT 12 tcp 0 0 s01cd :773 i f s 3 : nfs ESTABLISHED 13 tcp 1 0 l o c a l h o s t. l o c a l d o :51020 l o c a l h o s t. localdoma : i p p CLOSE WAIT 14 tcp 0 0 s01cd :59321 s01svvhd02. dream. r : http TIME WAIT IP ( ), localhost. 10.*.*.*, *.*, ( ) /12,. L11 (2017) 8 / 24

9 1 #i n c l u d e <arpa / i n e t. h> 2 #i n c l u d e <s t d i o. h> 3 #i n c l u d e < s t d l i b. h> 4 #i n c l u d e <s t r i n g. h> 5 #i n c l u d e <s y s / t y p e s. h> 6 #i n c l u d e <s y s / s o c k e t. h> 7 #i n c l u d e <s y s / u i o. h> 8 #i n c l u d e <u n i s t d. h> 9 10 #d e f i n e NQUEUESIZE 5 socket-server01.c 11 #d e f i n e SERVER PORT 0 / 12 #d e f i n e BUFFERSIZE / / 15 void d i e ( char message [ ] ) ; i n t main ( void ){ 18 i n t s ; / / L11 (2017) 9 / 24

10 19 i n t ws ; / / 20 s t r u c t s o c k a d d r i n sa, ca ; /, 21 s o c k l e n t c a l e n ; / t y p e d e f / 22 i n t m e s s a g e s i z e ; 23 char r e c v b u f f e r [ BUFFERSIZE ] ; 24 i n t v a l =1; 25 i n t n ; 26 char message [ BUFFERSIZE ] ; i f ( ( s=s o c k e t ( AF INET, SOCK STREAM,0))== 1){ 29 d i e ( s o c k e t ) ; 30 } / ( ) / 33 i f ( s e t s o c k o p t ( s, SOL SOCKET, SO REUSEADDR,& v a l, s i z e o f v a l ) ) { 34 d i e ( s o c k e t o p t s ) ; 35 } sa. s i n f a m i l y=af INET ; 38 sa. s i n p o r t = htons (SERVER PORT ) ; 39 sa. s i n a d d r. s a d d r = h t o n l (INADDR ANY ) ; / I P L11 (2017) 10 / 24

11 40 / sa. s i n z e r o [ 8 ] ; / 41 i f ( b i n d ( s, ( s t r u c t s o c k a d d r )& sa, s i z e o f ( sa ))== 1){ 42 d i e ( bind ) ; 43 } i f ( l i s t e n ( s, NQUEUESIZE)== 1 ){ 46 d i e ( l i s t e n ) ; 47 } w h i l e ( 1 ) { 50 c a l e n=s i z e o f ( ca ) ; i f ( ( ws=a c c e p t ( s, ( s t r u c t s o c k a d d r )&ca, &c a l e n ))== 1){ 53 d i e ( a c c e p t ) ; 54 } i f ( ( m e s s a g e s i z e = r e c v ( ws, r e c v b u f f e r, BUFFERSIZE,0)) <0){ 57 d i e ( r e c v ) ; 58 } 59 r e c v b u f f e r [ m e s s a g e s i z e ]= \0 ; 60 L11 (2017) 11 / 24

12 61 i f ( strncmp ( r e c v b u f f e r, count, s t r l e n ( count ))!=0){ 62 s t r c p y ( message, Penguin! \ n ) ; 63 } e l s e { 64 n=s t r l e n ( r e c v b u f f e r ) s t r l e n ( count ) ; 65 i f ( n==0){ 66 s t r c p y ( message, No A d e l i e Penguins! \ n ) ; 67 } e l s e i f ( n==1){ 68 s t r c p y ( message, One A d e l i e Penguin! \ n ) ; 69 } e l s e { 70 s p r i n t f ( message, %d A d e l i e Penguins! \ n, n ) ; 71 } 72 } 73 f p r i n t f ( s t d e r r, %s \n, r e c v b u f f e r ) ; i f ( w r i t e ( ws, message, s t r l e n ( message ))== 1){ 76 d i e ( w r i t e ) ; 77 } i f ( shutdown ( ws, SHUT RDWR)== 1 ){ 80 d i e ( shutdown ) ; 81 } L11 (2017) 12 / 24

13 82 83 i f ( c l o s e ( ws)== 1 ){ 84 d i e ( c l o s e ) ; 85 } } r e t u r n 0 ; 90 } / / 94 void d i e ( char message [ ] ) { 95 p e r r o r ( message ) ; 96 e x i t ( 1 ) ; 97 } L11 (2017) 13 / 24

14 I 1 #i n c l u d e <s y s / t y p e s. h> 2 #i n c l u d e <s y s / s o c k e t. h> 3 4 / / 5 i n t s o c k e t ( ) ; 6 7 / / 8 i n t b i n d ( i n t s, s t r u c t s o c k a d d r sa, i n t s a l e n ) ; 9 / s, sa / / 13 i n t l i s t e n ( i n t s,, i n t l e n q u e u e ) ; 14 / s, l e n q u e u e ( / L11 (2017) 14 / 24

15 II 18 i n t a c c e p t ( i n t s, s t r u c t s o c k a d d r ca, i n t c a l e n ) ; 19 / s 20 addr, c a l e n 21 / API sizeof int x;, sizeof (int), sizeof x ( ) sizeof(char)==1 L11 (2017) 15 / 24

16 ( ) 1 #i n c l u d e <s y s / s o c k e t. h> 2 3 i n t s o c k e t ( i n t f a m i l y, i n t type, i n t p r o t o c o l ) ; 4 /, / 5 6 i n t shutdown ( i n t sockfd, i n t how ) ; 7 / / 1 #i n c l u d e <u n i s t d. h> 2 i n t c l o s e ( i n t s o c k e t f d ) ; 3 / / L11 (2017) 16 / 24

17 ( ) 1 #i n c l u d e <s y s / t y p e s. h> 2 #i n c l u d e <s y s / s o c k e t. h> 3 4 i n t connect ( i n t sockfd, s t r u c t s o c k a d d r a d d r e s s, i n t a d d r l e n 5 / s o c k f d, 6 a d d r e s s 7 / 8 9 i n t r e c v ( i n t sockfd, char buf, i n t len, i n t f l a g s ) ; 10 / b u f, l e n / 11 /. 0, 1 / i n t send ( i n t sockfd, char buf, i n t len, i n t f l a g s ) ; 14 / b u f, l e n / 15 /. 1 / L11 (2017) 17 / 24

18 ( ) socket-client03 1 char s []= 10 p e n g u i n s ; 2 i n t n ; 3 s s c a n f ( s, %d,&n ) ; 1 char s []= 10 p e n g u i n s ; 2 i n t n ; 3 n=a t o i ( s ) ; / A s c i i c h a r a c t e r TO I n t e g e r / 4 / a t o l, atod / (, s /, ). L11 (2017) 18 / 24

19 make Makefile make Makefile L11 (2017) 19 / 24

20 make Makefile make make01 1 $ cc o d i e. o c d i e. c # d i e. c d i e. h 2 $ cc o main. o c main. c # main. c d i e. h 3 $ cc o main d i e. o main. o lm # main. o d i e. o. 1 $ make main, Makefile. Makefile. L11 (2017) 20 / 24

21 make Makefile Makefile 1 # T A B. 2 d i e. o : d i e. h d i e. c 3 cc o d i e. o c d i e. c 4 Makefile 5 main. o : d i e. h main. c 6 cc o main. o c d i e. c 7 main : d i e. o main. o 8 cc o main d i e. o main. o lm 9 10 h e l l o. o : h e l l o. c 11 cc o h e l l o. o c h e l l o. c 12 h e l l o : h e l l o. c 13 cc o h e l l o h e l l o. o L11 (2017) 21 / 24

22 make Makefile Makefile : 1 1, (TAB) 1 1 a 3 (TAB) 1 1 b : $ make 1, 1 $ make , 11, 12, 13, 1, 1a, 1b. L11 (2017) 22 / 24

23 make Makefile *.c *.h, make,.. 1 # 2 d i e. o : d i e. h d i e. c 3 main. o : d i e. h main. c 4 h e l l o. o : h e l l o. c 5 h e l l o : h e l l o. c 6 7 # lm 8 main : d i e. o main. o 9 cc o main d i e. o main. o lm Makefile, ( : ),. 1 $ touch main. c # main. c L11 (2017) 23 / 24

24 make Makefile (1-502), 4(1-502) [ ]. L12. Makefile or Learn Math Moodle,. L11 (2017) 24 / 24

IP L09( Tue) : Time-stamp: Tue 14:52 JST hig TCP/IP. IP,,,. ( ) L09 IP (2017) 1 / 28

IP L09( Tue) : Time-stamp: Tue 14:52 JST hig TCP/IP. IP,,,. ( ) L09 IP (2017) 1 / 28 L09(2017-11-21 Tue) : Time-stamp: 2017-11-21 Tue 14:52 JST hig TCP/IP. IP,,,. http://hig3.net L09 (2017) 1 / 28 9, IP, - L09 (2017) 2 / 28 C (ex. ) 1 TCP/IP 2 3 ( ) ( L09 (2017) 3 / 28 50+5, ( )50+5. (