Bonjour over bluetooth WITHOUT Gamekit ?

Question

I am wondering the possibility of directly using bonjour over bluetooth in iPhone OS 3.0 or later without using GameKit. Can anyone provide any examples ?

Answer 1

Just announce the service, just like tc. has said below:

self.netService = [[[NSNetService alloc] initWithDomain:@""                                                     type:@"_http._tcp"                                                     name:@""                                                     port:8080] autorelease]; [self.netService publish]; 

With iOS5, however, let's-call-it "Bluetooth Bonjour" is disabled by default, so you have to use the C API declared in <dns_sd.h>.

DNSServiceRef serviceRef; DNSServiceRegister(&serviceRef, // sdRef                    kDNSServiceFlagsIncludeP2P, // interfaceIndex                    0, // flags                    NULL, // name                    "_http._tcp", // regtype                    NULL, // domain                    NULL, // host                    1291, // port                    0, // txtLen                    NULL, // txtRecord                    NULL, // callBack,                    NULL // context                    ); 

This is just the announcement part; resolving is a bit more complex. I suggest you take a look at the following examples from Apple:

• SRVResolver - demonstrates how you can look up a service using API declared in <dns_sd.h>. Targets OS X, but includes a class called SRVResolver which you can use on iOS as easily as you can use it on OS X. For iOS 5 Bluetooth P2P to work, update the call to DNSServiceQueryRecord() to pass kDNSServiceFlagsIncludeP2P as the interfaceIndex. (NOTE! This sample does not seem to exist in OS X 10.8 docset. It can be found in 10.6 and 10.7 docsets. In 10.8, there's the DNSSDObjects example, but I didn't look exactly at what it does.)
• WiTap - as long as you don't actually care about Bluetooth support on iOS 5, just look at the example called WiTap, which demonstrates not only the beautiful Objective-C API, but also how you can create a server using CFSocket APIs (thin wrappers around BSD sockets). You'll want to look at this even if you are using SRVResolver to see how to use C-based API from <dns_sd.h>.

After announcing or resolving your service, you use regular BSD sockets to listen or connect. When writing a server, you may even want to first listen() on port 0 (zero), and then query which random available port was assigned to you. After querying for that, announce this port instead of a fixed one. That's exactly what WiTap example is doing (but with CFSocket API instead of BSD socket API).

For more info on BSD sockets, just Google around for a tutorial.

Note: information about iOS 5 comes from Apple's Technical Q&A QA1753.

Answer 2

Read this article : Bonjour over Bluetooth on iOS 5.0 https://developer.apple.com/library/ios/#qa/qa1753/_index.html#//apple_ref/doc/uid/DTS40011315

It is a known issue in IOS 5.0 and need to be resolved using lower level API : DNSSDObjects.