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POlocal vs remote socket connections on iphone
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copied!<p>I want to send OSC messages from iphone to another programme (max/msp) by creating and connecting to a udp socket. this works from the iphone simulator, i.e. when both apps are running on the same computer but not when i install the app on the phone itself.</p> <p>I think the problem could be with specifying the IP of the remote computer. I am using the sockaddr_in struct to specify IP and port info. when i run the code in the simulator it is fine to specify the IP as INADDR_ANY: </p> <p>sin_addr.s_addr = INADDR_ANY;</p> <p>when i run it on the device i'm trying to convert my IP into a hexidecimal number and specifying that instead of INADDR_ANY. This doesn't work for either the simulator or the device. </p> <p>The console shows that the the socket is connecting and sending data fine but the remote programme (max/msp) doesn't receive any data at all.</p> <p>I have tried importing the right frameworks so that it should work on both device and simulator.</p> <p>the full code follows:</p> <h1>import "UDPSocketCreate.h"</h1> <pre><code>@implementation UDPSocketCreate -(id)init { in_addr_t myAddress = 0xC0A80145; if(self =[super init]) { </code></pre> <p>//addr is an instance variable of type struct sockaddr_in </p> <pre><code> memset(&addr, 0, sizeof(addr)); addr.sin_len = sizeof(addr); addr.sin_family = PF_INET; addr.sin_port = htons(3333); addr.sin_addr.s_addr = myAddress;INADDR_ANY connectAddr = CFDataCreate(NULL, (unsigned char *)&addr, sizeof(addr)); OSC_initBuffer(&myOSCBuff, sizeof(packetBuffer), packetBuffer); NSString *address = @"/test"; const char *utf8Address = [address UTF8String]; int addressResult = OSC_writeAddress(&myOSCBuff, (char*)utf8Address); } return self; } CFSocketRef udpSocket; </code></pre> <p>// this method is called from app delegate after init </p> <pre><code>-(void)createUDPSocketRef { udpSocket = CFSocketCreate(NULL, PF_INET, SOCK_DGRAM, IPPROTO_UDP, kCFSocketWriteCallBack, myCallBack, NULL); if(udpSocket == NULL) { NSLog(@"socket create failed"); return; } CFRunLoopSourceRef runLoopSrceRef = CFSocketCreateRunLoopSource(NULL, udpSocket, 1); CFRunLoopRef rl = CFRunLoopGetCurrent(); CFRunLoopAddSource(rl, runLoopSrceRef, kCFRunLoopCommonModes); } // pressing a button on the UI triggers this method -(void)bang { int myInt = 1; int writeRestult = OSC_writeIntArg(&myOSCBuff, myInt); int buffDoneResult; if (buffDoneResult = OSC_isBufferDone(&myOSCBuff)) { NSLog(@"valid message in buff"); char *pack = OSC_getPacket(&myOSCBuff); int packSize = OSC_packetSize(&myOSCBuff); CFDataRef OSCPacketWithAddressTest = CFDataCreate(NULL, pack, packSize); CFSocketError sendError = CFSocketSendData(udpSocket, connectAddr, OSCPacketWithAddressTest, 30); NSLog(@"send error: %d", sendError); } OSC_resetBuffer(&myOSCBuff); NSString *address = @"/test"; const char *utf8Address = [address UTF8String]; int addressResult = OSC_writeAddress(&myOSCBuff, (char*)utf8Address); } @end </code></pre> <p>any help would be greatly appreciated</p>

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