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getaddrinfo error:service name not available for the specified socket type

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# 1  
Old 04-30-2010
getaddrinfo error:service name not available for the specified socket type
I use Solaris 10,and I use getaddrinfo in my code,like follows:

Code:
struct addrinfo *ailist,hint;
if(argc!=2)
   err_quit("usage: ruptime hostname");
hint.ai_flags=0;
hint.ai_family=0;
hint.ai_socktype=SOCK_STREAM;
hint.ai_protocol=0;
hint.ai_addrlen=0;
hint.ai_canonname=NULL;
hint.ai_addr=NULL;
hint.ai_next=NULL;
if((err=getaddrinfo[argv[1],"ruptime",&hint,&ailist))!=0)
   err_quit("getaddrinfo error: %s",gai_strerror(err));

When I run above code,it raise following error:
getaddrinfo error:service name not available for the specified socket type

Where is wrong? How to correct above code?
Thanks.
# 2  
Old 04-30-2010
What string is argv[1]? And what kind of file does it point to?
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