7
Eventuali duplicati:
Service discovery failed exception using Bluetooth on AndroidImpostazione di un server Bluetooth del PC per Android
Va bene, ho letto un sacco di argomenti negli ultimi due o tre giorni e nulla sembra ho chiesto questo.
Sto scrivendo un server lato PC per il mio dispositivo andriod, questo è per lo scambio di alcune informazioni e il debug generale. Alla fine mi collegherò a un dispositivo SPP per controllare un microcontrollore.
Sono riuscito, utilizzando il seguente (da Android a PC) per connettersi al canale 11 di rfcomm e scambiare dati tra il mio dispositivo Android e il mio pc.
Metodo m = device.getClass(). GetMethod ("createRfcommSocket", new Class [] {int.class}); tmp = (BluetoothSocket) m.invoke (device, Integer.valueOf (11));
Ho tentato il metodo createRfcommSocketToServiceRecord (UUID), assolutamente senza fortuna.
Per il PC, ho utilizzato lo stack C Bluez per Linux. Ho il seguente codice che registra il servizio e si apre un socket server:
int main(int argc, char **argv)
{
struct sockaddr_rc loc_addr = { 0 }, rem_addr = { 0 };
char buf[1024] = { 0 };
char str[1024] = { 0 };
int s, client, bytes_read;
sdp_session_t *session;
socklen_t opt = sizeof(rem_addr);
session = register_service();
s = socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
loc_addr.rc_family = AF_BLUETOOTH;
loc_addr.rc_bdaddr = *BDADDR_ANY;
loc_addr.rc_channel = (uint8_t) 11;
bind(s, (struct sockaddr *)&loc_addr, sizeof(loc_addr));
listen(s, 1);
client = accept(s, (struct sockaddr *)&rem_addr, &opt);
ba2str(&rem_addr.rc_bdaddr, buf);
fprintf(stderr, "accepted connection from %s\n", buf);
memset(buf, 0, sizeof(buf));
bytes_read = read(client, buf, sizeof(buf));
if(bytes_read > 0) {
printf("received [%s]\n", buf);
}
sprintf(str,"to Android.");
printf("sent [%s]\n",str);
write(client, str, sizeof(str));
close(client);
close(s);
sdp_close(session);
return 0;
}
sdp_session_t *register_service()
{
uint32_t svc_uuid_int[] = { 0x00000000,0x00000000,0x00000000,0x00000000 };
uint8_t rfcomm_channel = 11;
const char *service_name = "Remote Host";
const char *service_dsc = "What the remote should be connecting to.";
const char *service_prov = "Your mother";
uuid_t root_uuid, l2cap_uuid, rfcomm_uuid, svc_uuid;
sdp_list_t *l2cap_list = 0,
*rfcomm_list = 0,
*root_list = 0,
*proto_list = 0,
*access_proto_list = 0;
sdp_data_t *channel = 0, *psm = 0;
sdp_record_t *record = sdp_record_alloc();
// set the general service ID
sdp_uuid128_create(&svc_uuid, &svc_uuid_int);
sdp_set_service_id(record, svc_uuid);
// make the service record publicly browsable
sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);
root_list = sdp_list_append(0, &root_uuid);
sdp_set_browse_groups(record, root_list);
// set l2cap information
sdp_uuid16_create(&l2cap_uuid, L2CAP_UUID);
l2cap_list = sdp_list_append(0, &l2cap_uuid);
proto_list = sdp_list_append(0, l2cap_list);
// set rfcomm information
sdp_uuid16_create(&rfcomm_uuid, RFCOMM_UUID);
channel = sdp_data_alloc(SDP_UINT8, &rfcomm_channel);
rfcomm_list = sdp_list_append(0, &rfcomm_uuid);
sdp_list_append(rfcomm_list, channel);
sdp_list_append(proto_list, rfcomm_list);
// attach protocol information to service record
access_proto_list = sdp_list_append(0, proto_list);
sdp_set_access_protos(record, access_proto_list);
// set the name, provider, and description
sdp_set_info_attr(record, service_name, service_prov, service_dsc);
int err = 0;
sdp_session_t *session = 0;
// connect to the local SDP server, register the service record, and
// disconnect
session = sdp_connect(BDADDR_ANY, BDADDR_LOCAL, SDP_RETRY_IF_BUSY);
err = sdp_record_register(session, record, 0);
// cleanup
//sdp_data_free(channel);
sdp_list_free(l2cap_list, 0);
sdp_list_free(rfcomm_list, 0);
sdp_list_free(root_list, 0);
sdp_list_free(access_proto_list, 0);
return session;
}E un altro pezzo di codice, oltre a 'sdptool navigare locale', che può verifty che il record servizio è in esecuzione sul pc:
int main(int argc, char **argv)
{
uuid_t svc_uuid;
uint32_t svc_uuid_int[] = { 0x00000000,0x00000000,0x00000000,0x00000000 };
int err;
bdaddr_t target;
sdp_list_t *response_list = NULL, *search_list, *attrid_list;
sdp_session_t *session = 0;
str2ba("01:23:45:67:89:AB", &target);
// connect to the SDP server running on the remote machine
session = sdp_connect(BDADDR_ANY, BDADDR_LOCAL, SDP_RETRY_IF_BUSY);
// specify the UUID of the application we're searching for
sdp_uuid128_create(&svc_uuid, &svc_uuid_int);
search_list = sdp_list_append(NULL, &svc_uuid);
// specify that we want a list of all the matching applications' attributes
uint32_t range = 0x0000ffff;
attrid_list = sdp_list_append(NULL, &range);
// get a list of service records that have UUID 0xabcd
err = sdp_service_search_attr_req(session, search_list, \
SDP_ATTR_REQ_RANGE, attrid_list, &response_list);
sdp_list_t *r = response_list;
// go through each of the service records
for (; r; r = r->next) {
sdp_record_t *rec = (sdp_record_t*) r->data;
sdp_list_t *proto_list;
// get a list of the protocol sequences
if(sdp_get_access_protos(rec, &proto_list) == 0) {
sdp_list_t *p = proto_list;
// go through each protocol sequence
for(; p ; p = p->next) {
sdp_list_t *pds = (sdp_list_t*)p->data;
// go through each protocol list of the protocol sequence
for(; pds ; pds = pds->next) {
// check the protocol attributes
sdp_data_t *d = (sdp_data_t*)pds->data;
int proto = 0;
for(; d; d = d->next) {
switch(d->dtd) {
case SDP_UUID16:
case SDP_UUID32:
case SDP_UUID128:
proto = sdp_uuid_to_proto(&d->val.uuid);
break;
case SDP_UINT8:
if(proto == RFCOMM_UUID) {
printf("rfcomm channel: %d\n",d->val.int8);
}
break;
}
}
}
sdp_list_free((sdp_list_t*)p->data, 0);
}
sdp_list_free(proto_list, 0);
}
printf("found service record 0x%x\n", rec->handle);
sdp_record_free(rec);
}
sdp_close(session);
}
Output:
$ ./search
rfcomm channel: 11
found service record 0x10008
sdptool:
Service Name: Remote Host
Service Description: What the remote should be connecting to.
Service Provider: Your mother
Service RecHandle: 0x10008
Protocol Descriptor List:
"L2CAP" (0x0100)
"RFCOMM" (0x0003)
Channel: 11
E per logcat sto ottenendo questo:
07-22 15:57:06.087: ERROR/BTLD(215): ****************search UUID = 0000***********
07-22 15:57:06.087: INFO//system/bin/btld(209): btapp_dm_GetRemoteServiceChannel()
07-22 15:57:06.087: INFO//system/bin/btld(209): ##### USerial_Ioctl: BT_Wake, 0x8003 ####
07-22 15:57:06.097: INFO/ActivityManager(88): Displayed activity com.example.socktest/.socktest: 79 ms (total 79 ms)
07-22 15:57:06.697: INFO//system/bin/btld(209): ##### USerial_Ioctl: BT_Sleep, 0x8004 ####
07-22 15:57:07.517: WARN/BTLD(215): ccb timer ticks: 2147483648
07-22 15:57:07.517: INFO//system/bin/btld(209): ##### USerial_Ioctl: BT_Wake, 0x8003 ####
07-22 15:57:07.547: WARN/BTLD(215): info:x10
07-22 15:57:07.547: INFO/BTL-IFS(215): send_ctrl_msg: [BTL_IFS CTRL] send BTLIF_DTUN_SIGNAL_EVT (CTRL) 10 pbytes (hdl 14)
07-22 15:57:07.547: DEBUG/DTUN_HCID_BZ4(253): dtun_dm_sig_link_up()
07-22 15:57:07.547: INFO/DTUN_HCID_BZ4(253): dtun_dm_sig_link_up: dummy_handle = 342
07-22 15:57:07.547: DEBUG/ADAPTER(253): adapter_get_device(00:02:72:AB:7C:EE)
07-22 15:57:07.547: ERROR/BluetoothEventLoop.cpp(88): pollData[0] is revented, check next one
07-22 15:57:07.547: ERROR/BluetoothEventLoop.cpp(88): event_filter: Received signal org.bluez.Device:PropertyChanged from /org/bluez/253/hci0/dev_00_02_72_AB_7C_EE
07-22 15:57:07.777: WARN/BTLD(215): process_service_search_attr_rsp
07-22 15:57:07.787: INFO/BTL-IFS(215): send_ctrl_msg: [BTL_IFS CTRL] send BTLIF_DTUN_SIGNAL_EVT (CTRL) 13 pbytes (hdl 14)
07-22 15:57:07.787: INFO/DTUN_HCID_BZ4(253): dtun_dm_sig_rmt_service_channel: success=0, service=00000000
07-22 15:57:07.787: ERROR/DTUN_HCID_BZ4(253): discovery unsuccessful!
07-22 15:57:08.497: INFO//system/bin/btld(209): ##### USerial_Ioctl: BT_Sleep, 0x8004 ####
07-22 15:57:09.507: INFO//system/bin/btld(209): ##### USerial_Ioctl: BT_Wake, 0x8003 ####
07-22 15:57:09.597: INFO/BTL-IFS(215): send_ctrl_msg: [BTL_IFS CTRL] send BTLIF_DTUN_SIGNAL_EVT (CTRL) 11 pbytes (hdl 14)
07-22 15:57:09.597: DEBUG/DTUN_HCID_BZ4(253): dtun_dm_sig_link_down()
07-22 15:57:09.597: INFO/DTUN_HCID_BZ4(253): dtun_dm_sig_link_down device = 0xf7a0 handle = 342 reason = 22
07-22 15:57:09.597: ERROR/BluetoothEventLoop.cpp(88): pollData[0] is revented, check next one
07-22 15:57:09.597: ERROR/BluetoothEventLoop.cpp(88): event_filter: Received signal org.bluez.Device:PropertyChanged from /org/bluez/253/hci0/dev_00_02_72_AB_7C_EE
07-22 15:57:09.597: DEBUG/BluetoothA2dpService(88): Received intent Intent { act=android.bluetooth.device.action.ACL_DISCONNECTED (has extras) }
07-22 15:57:10.107: INFO//system/bin/btld(209): ##### USerial_Ioctl: BT_Sleep, 0x8004 ####
07-22 15:57:12.107: DEBUG/BluetoothService(88): Cleaning up failed UUID channel lookup: 00:02:72:AB:7C:EE 00000000-0000-0000-0000-000000000000
07-22 15:57:12.107: ERROR/Socket Test(5234): connect() failed
07-22 15:57:12.107: DEBUG/ASOCKWRP(5234): asocket_abort [31,32,33]
07-22 15:57:12.107: INFO/BLZ20_WRAPPER(5234): blz20_wrp_shutdown: s 31, how 2
07-22 15:57:12.107: DEBUG/BLZ20_WRAPPER(5234): blz20_wrp_shutdown: fd (-1:31), bta -1, rc 0, wflags 0x0
07-22 15:57:12.107: INFO/BLZ20_WRAPPER(5234): __close_prot_rfcomm: fd 31
07-22 15:57:12.107: INFO/BLZ20_WRAPPER(5234): __close_prot_rfcomm: bind not completed on this socket
07-22 15:57:12.107: DEBUG/BLZ20_WRAPPER(5234): btlif_signal_event: fd (-1:31), bta -1, rc 0, wflags 0x0
07-22 15:57:12.107: DEBUG/BLZ20_WRAPPER(5234): btlif_signal_event: event BTLIF_BTS_EVT_ABORT matched
07-22 15:57:12.107: DEBUG/BTL_IFC_WRP(5234): wrp_close_s_only: wrp_close_s_only [31] (31:-1) []
07-22 15:57:12.107: DEBUG/BTL_IFC_WRP(5234): wrp_close_s_only: data socket closed
07-22 15:57:12.107: DEBUG/BTL_IFC_WRP(5234): wsactive_del: delete wsock 31 from active list [ad3e1494]
07-22 15:57:12.107: DEBUG/BTL_IFC_WRP(5234): wrp_close_s_only: wsock fully closed, return to pool
07-22 15:57:12.107: DEBUG/BLZ20_WRAPPER(5234): btsk_free: success
07-22 15:57:12.107: DEBUG/BLZ20_WRAPPER(5234): blz20_wrp_write: wrote 1 bytes out of 1 on fd 33
07-22 15:57:12.107: DEBUG/ASOCKWRP(5234): asocket_destroy
07-22 15:57:12.107: DEBUG/ASOCKWRP(5234): asocket_abort [31,32,33]
07-22 15:57:12.107: INFO/BLZ20_WRAPPER(5234): blz20_wrp_shutdown: s 31, how 2
07-22 15:57:12.107: DEBUG/BLZ20_WRAPPER(5234): blz20_wrp_shutdown: btsk not found, normal close (31)
07-22 15:57:12.107: DEBUG/BLZ20_WRAPPER(5234): blz20_wrp_write: wrote 1 bytes out of 1 on fd 33
07-22 15:57:12.107: INFO/BLZ20_WRAPPER(5234): blz20_wrp_close: s 33
07-22 15:57:12.107: DEBUG/BLZ20_WRAPPER(5234): blz20_wrp_close: btsk not found, normal close (33)
07-22 15:57:12.107: INFO/BLZ20_WRAPPER(5234): blz20_wrp_close: s 32
07-22 15:57:12.107: DEBUG/BLZ20_WRAPPER(5234): blz20_wrp_close: btsk not found, normal close (32)
07-22 15:57:12.107: INFO/BLZ20_WRAPPER(5234): blz20_wrp_close: s 31
07-22 15:57:12.107: DEBUG/BLZ20_WRAPPER(5234): blz20_wrp_close: btsk not found, normal close (31)
07-22 15:57:12.157: DEBUG/Sensors(88): close_akm, fd=151
07-22 15:57:12.167: ERROR/CachedBluetoothDevice(477): onUuidChanged: Time since last connect14970690
07-22 15:57:12.237: DEBUG/Socket Test(5234): -On Stop-
Scusate bombardandoti con quella che sembra una domanda difficile e molto da leggere, ma ho lavorato su questo problema per un po 'e ho provato un sacco di cose diverse per farlo funzionare.
Consentitemi di reiterare, posso farlo funzionare, ma non utilizzando il protocollo di rilevamento servizi. Ho provato diversi UUID e su due computer diversi, anche se ho solo il mio HTC Incredible con cui testare.
Ho anche sentito alcune voci sul fatto che lo stack BT non stava funzionando su HTC Droid, ma non è il caso, almeno, per l'interazione con il PC.
Ciao Del Hai risolto il problema, sto anche affrontando lo stesso problema – Haris