omencathay
DD-WRT Novice
Joined: 31 Mar 2010
Posts: 11
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 Posted: Thu Apr 01, 2010 8:57 Post subject: a little socket program,connect ok,but recv error |
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belkin F5D7231-4
DD-WRT v24-sp2
toolchain gcc.3.4.4-broadcom-mipsel.tar download from www.dd-wrt.com
I write a little test program to post data to a webserver.
| Code: |
//test.c
int main(){
int sockfd;
struct sockaddr_in _addr;
struct hostent *he;
if((sockfd=socket(AF_INET,SOCK_STREAM,0))<0){
printf("create socket error %s\n",strerror(errno));
return -1;
}
if((he = gethostbyname("192.168.1.149"))==NULL){
printf("get host error\n");
return -2;
}
_addr.sin_family = AF_INET;
_addr.sin_port = htons(8000);
_addr.sin_addr = *((struct in_addr *)he->h_addr);
int conn;
if(conn=connect(sockfd, (struct sockaddr *)&_addr,sizeof(struct sockaddr))<0){
printf("connect socket error %s\n",strerror(errno));
return -1;
}
printf("conn %d\n",conn);
char buf[1024];
sprintf(buf,"%s","POST /detect/ HTTP/1.0\r\nHOST: 192.168.1.149:8000\r\nUser-Agent: test Http 0.1\r\nCache-Control: no-cache\r\nAccept: */*\r\nContent-Length: 102\r\n\r\n0001web100110008AKILISNB00740004006600170005Linux00120000001300000014000000150000001600000018000510001");
char res[1024];
if(send(sockfd,buf,strlen(buf),0)<0){
printf("send socket error %s\n",strerror(errno));
return -1;
}
if(read(sockfd, res,sizeof(res))<0){
printf("recv socket error %s\n",strerror(errno));
return -1;
}
printf("the result is : %s\n",res);
return 0;
}
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then
mipsel-linux-gcc -o test test.c
ok
and upload the compiled "test" program to dd-wrt
the result shows that:
socket connect() ok
socket send() ok
but when read(),there is an error:connection refused,errno=146
I test the wget command in busyBox V1.13.4 to get that url ok.
who can help me? sorry for my poor english. |
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omencathay
DD-WRT Novice
Joined: 31 Mar 2010
Posts: 11
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| Posted: Thu Apr 01, 2010 10:03 Post subject: |
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I know the reanson,I used the wrong toolchain, althought it can compile the test.c program.
I use another version toolchain gcc-4.1,the problem is resolved. |
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