First of all: -- Why are you running a server on a device? In general this is a "bad idea" because you're probably going to make your users hate you when their batteries die extremely quickly. -- You understand that the Android system can, at any time, kill your app right? -- You probably need at least a wake lock to make something like this work -- If it's tinyish, why not just rewrite it using Java? This is (I assure you) going to be much easier than doing the proper communication between JNI / Service / rest of the app. (This, of course, depends on your definition of "tinyish.") -- What is the value of 'errno' after your call fails?
kris On Sat, Jan 21, 2012 at 11:57 AM, Chad A. <[email protected]> wrote: > I'm porting a tinyish server to Android using the NDK. The ultimate > goal is for my app to interact with the server through JNI and Android > Service classes. > > I've run across a stumbling block, however. The server fails to start > as soon as I call accept() on the socket. I've pasted the code > below. All I want to to is open a socket that listens to localhost > requests of port 8888. > > If anyone can give me advice, I would greatly appreciate it. Thanks, > > ------- > > > static void > socket_listen_to(const char *host_name, unsigned int port) { > struct sockaddr_in address; > int listening_socket; > int connection_socket; > if (host_name) { > struct hostent *host_data; > host_data = gethostbyname(host_name); > if (!host_data || host_data->h_addrtype != AF_INET || host_data- >>h_length != sizeof address.sin_addr) { > exit(EXIT_FAILURE); > } > host_name = host_data->h_name; > memcpy(&address.sin_addr, host_data->h_addr_list[0], > sizeof address.sin_addr); > } > > listening_socket = socket(PF_INET, SOCK_STREAM, 0); > if (listening_socket == -1) { > exit(EXIT_FAILURE); > } > > address.sin_family = AF_INET; > address.sin_port = htons((unsigned short) port); > > if (bind(listening_socket, (struct sockaddr *) &address, sizeof > address) == -1 > || listen(listening_socket, 5) == -1 ) { > closesocket(listening_socket); > exit(EXIT_FAILURE); > } > connection_socket = accept(listening_socket, NULL, NULL); > if (connection_socket == -1 ) { > closesocket(listening_socket); > exit(EXIT_FAILURE); > } > } > > unsigned int port = 8888; > const char host_name[] = "localhost"; > socket_listen_at(host_name, port, >p_input_FILE, >p_output_FILE); > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
