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Use +++ATH to hang up modem instead of lowering DTR (untested).

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This commit is contained in:
akwizgran
2012-12-15 02:56:34 +00:00
parent a24275d9fc
commit 15c23f486e
2 changed files with 21 additions and 8 deletions
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20
briar-core/src/net/sf/briar/plugins/modem/ModemImpl.java
View File

@@ -31,6 +31,7 @@ class ModemImpl implements Modem, WriteHandler, SerialPortEventListener {
};
private static final int OK_TIMEOUT = 5 * 1000; // Milliseconds
private static final int CONNECT_TIMEOUT = 2 * 60 * 1000; // Milliseconds
private static final int ESCAPE_SEQUENCE_GUARD_TIME = 1000; // Milliseconds
private final Executor executor;
private final ReliabilityLayerFactory reliabilityFactory;
@@ -79,8 +80,10 @@ class ModemImpl implements Modem, WriteHandler, SerialPortEventListener {
break;
}
}
if(!foundBaudRate)
if(!foundBaudRate) {
tryToClose(port);
throw new IOException("No suitable baud rate");
}
port.purgePort(PURGE_RXCLEAR | PURGE_TXCLEAR);
port.addEventListener(this);
port.writeBytes("ATZ\r\n".getBytes("US-ASCII")); // Reset
@@ -90,6 +93,7 @@ class ModemImpl implements Modem, WriteHandler, SerialPortEventListener {
throw new IOException(e.toString());
}
// Wait for the event thread to receive "OK"
boolean success = false;
try {
synchronized(this) {
long now = System.currentTimeMillis();
@@ -98,13 +102,14 @@ class ModemImpl implements Modem, WriteHandler, SerialPortEventListener {
wait(end - now);
now = System.currentTimeMillis();
}
if(initialised) return true;
success = initialised;
}
} catch(InterruptedException e) {
tryToClose(port);
Thread.currentThread().interrupt();
throw new IOException("Interrupted while initialising");
}
if(success) return true;
tryToClose(port);
return false;
} finally {
@@ -132,6 +137,7 @@ class ModemImpl implements Modem, WriteHandler, SerialPortEventListener {
try {
stateChange.acquire();
} catch(InterruptedException e) {
tryToClose(port);
Thread.currentThread().interrupt();
throw new IOException("Interrupted while waiting to stop");
}
@@ -163,7 +169,14 @@ class ModemImpl implements Modem, WriteHandler, SerialPortEventListener {
reliability.stop();
if(LOG.isLoggable(INFO)) LOG.info("Hanging up");
try {
port.setDTR(false);
Thread.sleep(ESCAPE_SEQUENCE_GUARD_TIME);
port.writeBytes("+++".getBytes("US-ASCII"));
Thread.sleep(ESCAPE_SEQUENCE_GUARD_TIME);
port.writeBytes("ATH\r\n".getBytes("US-ASCII"));
} catch(InterruptedException e) {
tryToClose(port);
Thread.currentThread().interrupt();
throw new IOException("Interrupted while hanging up");
} catch(SerialPortException e) {
tryToClose(port);
throw new IOException(e.toString());
@@ -246,6 +259,7 @@ class ModemImpl implements Modem, WriteHandler, SerialPortEventListener {
try {
stateChange.acquire();
} catch(InterruptedException e) {
tryToClose(port);
Thread.currentThread().interrupt();
throw new IOException("Interrupted while waiting to hang up");
}

9
briar-core/src/net/sf/briar/reliability/ReliabilityLayerImpl.java
View File

@@ -54,6 +54,7 @@ class ReliabilityLayerImpl implements ReliabilityLayer, WriteHandler {
byte[] b = null;
while(now < next && b == null) {
b = writes.poll(next - now, MILLISECONDS);
if(!running) return;
now = System.currentTimeMillis();
}
if(b == null) {
@@ -94,13 +95,11 @@ class ReliabilityLayerImpl implements ReliabilityLayer, WriteHandler {
// The transport calls this method to pass data up to the SLIP decoder
public void handleRead(byte[] b) throws IOException {
if(!running) throw new IOException("Connection closed");
decoder.handleRead(b);
if(running) decoder.handleRead(b);
}
// The SLIP encoder calls this method to pass data down to the transport
public void handleWrite(byte[] b) throws IOException {
if(!running) throw new IOException("Connection closed");
if(b.length > 0) writes.add(b);
public void handleWrite(byte[] b) {
if(running && b.length > 0) writes.add(b);
}
}