On Thu, Apr 30, 2009 at 5:39 PM, Carlos A. M. dos Santos
<[email protected]> wrote:
> Hello,
>
> I have a C++ code containing this:
>
> char* hostname;
> ...
> struct addrinfo hints;
> struct addrinfo *addi;
> ::memset(&hints, 0, sizeof(hints));
> hints.ai_family = AF_UNSPEC;
> hints.ai_socktype = SOCK_STREAM;
> hints.ai_protocol = IPPROTO_TCP;
> int status = ::getaddrinfo(hostname, "9999", NULL, &addi);
> if (status != 0) {
> fprintf(stderr, "getaddrinfo failed: %s\n", gai_strerror(status));
> return 1;
> }
>
> If I run it on the emulator I ever get the following message:
>
> "getaddrinfo failed: servname not supported for ai_socktype"
>
> If I run a similar code on Linux it succeeds. I noticed that Dalvik
> uses gethostbyname (in
> dalvik/libcore/luni/src/main/native/org_apache_harmony_luni_platform_OSNetworkSystem.cpp)
> instead of getaddrinfo.
>
> Is getaddrinfo purposefully not working on Android?
I just realized that I pasted too many lines. The presence of the
"hints" variable in the code above became misleading. It is important
to point out that the error does not happen if I pass the hints to
getaddrinfo, like this:
struct addrinfo hints;
struct addrinfo *addi;
::memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
int status = ::getaddrinfo(hostname, "9999", &hints, &addi);
I'm intrigued about the different behaviors of Linux and Android when
the hint parameter is NULL. Which one is correct?
--
My preferred quotation of Robert Louis Stevenson is "You cannot
make an omelette without breaking eggs". Not because I like the
omelettes, but because I like the sound of eggs being broken.
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