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android - 为android设置一个pc蓝牙服务器

转载 作者：塔克拉玛干 更新时间：2023-11-02 20:06:39 24 4
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Possible Duplicate:
Service discovery failed exception using Bluetooth on Android

好吧，这两天看了很多话题，好像没有人问过这个。

我正在为我的安卓设备写一个PC端服务器，这是为了交换一些信息和一般调试。最终我将连接到 SPP 设备来控制微 Controller 。

我已经成功使用以下(Android 到 pc)连接到 rfcomm channel 11 并在我的 android 设备和我的 pc 之间交换数据。

方法 m = device.getClass().getMethod("createRfcommSocket", new Class[] { int.class });tmp = (BluetoothSocket) m.invoke(设备, Integer.valueOf(11));

我尝试了 createRfcommSocketToServiceRecord(UUID) 方法，但绝对没有成功。

对于 PC 端，我一直在使用适用于 Linux 的 C Bluez 堆栈。我有以下注册服务并打开服务器套接字的代码:

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;
}

还有一段代码，除了'sdptool browse local'可以验证服务记录是否在pc上运行:

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

对于 logcat，我得到了这个:


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-

很抱歉用看似困难且需要大量阅读的问题来轰炸你们，但我已经研究这个问题一段时间了，并且我尝试了很多不同的方法来解决这个问题。

让我重申一下，我可以让它工作，但不使用服务发现协议(protocol)。我已经在两台不同的计算机上尝试了几个不同的 UUID，尽管我只有我的 HTC Incredible 可以用来测试。

我也听说过一些谣言，说 BT 堆栈在 HTC Droid 上不起作用，但至少对于 PC 交互而言，情况并非如此。

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