Linux伊甸园论坛 » C/C++ (STL/boost) » socket程序有错，大伙帮忙看看！

xlhxyh 发表于 2008-3-18 10:06

socket程序有错，大伙帮忙看看！

#include <sys/socket.h>
\\o$VR.f1B;F;J #include <unistd.h>$J:ta6V U
#include <stdio.h>
+q%q/D;B!\1^YP #include <stdlib.h>(}VP'K.~`C}S4Z{
#include <sys/types.h>
S'?8`"M;a-x/\ #include <netdb.h>
cD!nx*U #include <netinet/in.h>9KCuuJ
#include <string.h>m$j6^-th(`Hc6KxS
(p6tz\%U%]hg
#define IP "192.168.1.1"
j-} N@PU H
(y;tdB.MRL
|C int main(int ac,char* av){
J#U5s Cf_7\u int s,cnt,port=0;
:K"JbG/C struct sockaddr_in addr;Y:G1YLY0sff-`$N

WV0~!T^:vu"q-I K s=socket(PF_INET,SOCK_STREAM,0);%Y%G t
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if(s==-1){printf("sock err!");_exit(1);};
/G.h ]*^1g'uNY ^7{!{j8EM$Nz
printf("input port number:");
eJWu]0rC'm
?
I_aG-Z,wHL scanf("%d",&port); cG.Fr4Iv+tB0z;P/y
printf("test!");&WL0O
Hhvf*W7r3L
-CZ'P\.PAU0B.Xd
addr.sin_family=AF_INET;
9D@?1s)^7f addr.sin_port=htons(port);eK3f3e*iU
addr.sin_addr.s_addr=inet_addr(IP);5r gy.E/^ei K?
printf("test!");

q,{C6MK cnt=connect(s,(struct sockaddr *)&addr,sizeof addr);
/`p
P[G n$`8`i
*H3V+Z({0n%P/o if(cnt==-1){printf("connetc err!");_exit(1);}r$D-S.m3M'fi3mk
else{qbD:c#Zxdp
printf("\nport %d open!",port);
\+aj#nC ^ }
spq-Q6J?
Tr1Y'C,t)Wv close(s);
zVc_Z&J-p return 0;R$xqFp-ox.c
}:pSk jX+Na,|u

v||Q O"DPV8~ mq
结果是：
kbr6TtVL9g;D debian:/program#./shiy
8V
xf1HX{ input port number:21$z3j|^^-HW'LG
debian:/program#

dearvoid 发表于 2008-3-18 19:23

什么错误?/{1sLsHwg9i
[quote][font=Courier][color=black][/color][color=blue]-(dearvoid@LinuxEden:Forum)-(~/tmp)-`!iB pl]
[$$=18795 $?=0][/color] [color=red]; cat foo.c9_"y3B#@&Ss$UMOh"l
[/color][color=black]
a"}o~NMa #include <sys/socket.h>ItR&Z6e{9b5p
#include <unistd.h> p{2rrK Fm+|!j
#include <stdio.h>
F2_#mQnZ!a5r #include <stdlib.h>'_^Ha3n.s mcY
#include <netdb.h> `$w)J:S;H6x
#include <netinet/in.h>
#W1He"LF/A%D2` #include <string.h>E k ^Kln)N
#include <sys/types.h>
5Q;B.~wG$r #include <netinet/in.h>(G#HvHN)wSt'\
#include <arpa/inet.h>
k-pTl-CM
#CVm#aBD #define IP [color=red]"140.186.70.20" // ftp.gnu.org[/color]G9iI&jB$v
W Bdi?6o|2^D%D:d
int
.Q;`eJ:\ main(int ac, char **av)
J y S5R8W%DtS {3`Q7Pu"t5G
    int s, cnt, port = 0;
*n1B!XvtxyU)h'v e,{     struct sockaddr_in addr;&{ jIT4Zv B/a.l
yVx1{j
    s = socket(PF_INET, SOCK_STREAM, 0);jQR*Kn~
    if (s == -1) {'a(h$T+rY1` `{
        printf("sock err!");;l\T5w#@x
        _exit(1);b4[#ij$^
    };
VM){/@P{b 0Wlm:Rf"YB"[ ]1x
    printf("input port number:");.K3j%c;u;U/Gx(s d

Xs CP~*Cy
    scanf("%d", &port);
`fp?3N~kL5~EI     printf("test!");
+X8A+maM1SA q5h7W i9LJ0G
    addr.sin_family = AF_INET;,lCH eI+^ c ha
j
    addr.sin_port = htons(port);0vw P[(pl&]
    addr.sin_addr.s_addr = inet_addr(IP);
XZ{ww     printf("test!");
1t8sm.i$R B5r&w     cnt = connect(s, (struct sockaddr *) &addr, sizeof addr);-T(apknt0TaM(d

aXC+CM|7f+gM*z     if (cnt == -1) {4b5{mF,@F qA-V'A
        printf("connetc err!");
W.A)gITxl         _exit(1);
J(EO}g x:iI     } else {^*UPnb\
        printf("\nport %d open!\n", port);
b0Q7C V K}SB-K_:EJ     }
)p]4Px(v!B [Y'kbof
z(u
    close(s);
9k:X)@ a0pEO7z     return 0;E'`7^&B+o ~+de
}.NNd0E"P)d)oz,mQp6t
[/color][color=blue]-(dearvoid@LinuxEden:Forum)-(~/tmp)-
"]%^@/[%]-p'V6]3iB [$$=18795 $?=0][/color] [color=red]; gcc foo.c
^_|I6M+m n [/color][color=black][/color][color=blue]-(dearvoid@LinuxEden:Forum)-(~/tmp)-
6xX'O9WMJ,K [$$=18795 $?=0][/color] [color=red]; ./a.outPWO1Sp
[/color][color=black]input port number:21s uHh MA!u
test!test!
Q9F-f[5U+yl port 21 open!
L1pYp|+g O/d [/color][color=blue]-(dearvoid@LinuxEden:Forum)-(~/tmp)-
&e,}\R/s [$$=18795 $?=0][/color] [color=red]; bye
RHzHp'Bf!pm [/color][color=black][/color][/font][/quote]
i/^w+P T/yI^6nM (PI9ij9J:y-p%s
[[i] 本帖最后由 dearvoid 于 2008-3-18 19:29 编辑 [/i]]

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