7
可能重複：
Service discovery failed exception using Bluetooth on Android建立一個PC藍牙服務器爲Android
好吧，我已經讀了很多話題過去兩三天，似乎沒有任何已經問過這個。
我正在爲我的andriod設備編寫PC端服務器，這是爲了交換一些信息和一般調試。最終，我將連接到一個SPP設備來控制一個微控制器。
我已經管理，使用以下（Android到PC）連接到rfcomm頻道11，並在我的android設備和我的電腦之間交換數據。方法m = device.getClass（）。getMethod（「createRfcommSocket」，new Class [] {int.class}）;}方法m = device.getClass（）。 tmp =（BluetoothSocket）m.invoke（device，Integer.valueOf（11））;
我嘗試過createRfcommSocketToServiceRecord（UUID）方法，絕對沒有運氣。
對於PC端來說，我一直在使用Linux的C Bluez協議棧。我有以下的代碼，註冊服務，並打開一個服務器套接字：
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;
}而另一段代碼，除了「sdptool可以瀏覽本地」，可verifty該服務記錄在PC上運行：
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
而對於logcat的我得到這個：
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-
對不起轟炸你們，看起來像是一個困難的問題，還有很多需要閱讀，但我一直在研究這個問題一段時間，我嘗試了很多不同的東西來實現這個目標。
讓我重申，我可以讓它工作，但不使用服務發現協議。我嘗試了幾種不同的UUID並在兩臺不同的電腦上使用，但我只有HTC Incredible可以測試。
我也聽說過一些傳言，BT堆棧在HTC Droid上不起作用，但至少在PC機互動方面並非如此。
嗨德爾你解決了這個問題，我也面臨同樣的問題 – Haris 2013-08-05 10:48:29