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Commit d2fc24e7 authored by jrandom's avatar jrandom Committed by zzz
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deal with no proxy available 

more carefully retrieve a proxy
logging (w/ unique requestId)
parent ec52c81f
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apps/i2ptunnel/java/src/net/i2p/i2ptunnel/I2PTunnelHTTPClient.java
+ 78
− 37
View file @ d2fc24e7
......@@ -82,6 +82,16 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
"the following Destination:<BR><BR>")
.getBytes();
private final static byte[] ERR_NO_OUTPROXY =
("HTTP/1.1 503 Service Unavailable\r\n"+
"Content-Type: text/html; charset=iso-8859-1\r\n"+
"Cache-control: no-cache\r\n"+
"\r\n"+
"<html><body><H1>I2P ERROR: No outproxy found</H1>"+
"Your request was for a site outside of I2P, but you have no "+
"HTTP outproxy configured. Please configure an outproxy in I2PTunnel")
.getBytes();
/** used to assign unique IDs to the threads / clients. no logic or functionality */
private static volatile long __clientId = 0;
......@@ -113,23 +123,33 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
notifyEvent("openHTTPClientResult", "ok");
}
private String getPrefix() { return "Client[" + _clientId + "]: "; }
private String getPrefix(long requestId) { return "Client[" + _clientId + "/" + requestId + "]: "; }
private String selectProxy() {
if (proxyList.size() <= 0) {
l.log("Proxy list is emtpy - no outproxy available");
return null;
synchronized (proxyList) {
int size = proxyList.size();
if (size <= 0) {
if (_log.shouldLog(Log.INFO))
_log.info("Proxy list is empty - no outproxy available");
l.log("Proxy list is emtpy - no outproxy available");
return null;
}
int index = I2PAppContext.getGlobalContext().random().nextInt(size);
if (index >= size) index = size - 1;
if (index < 0) return null;
String proxy = (String)proxyList.get(index);
return proxy;
}
int index = I2PAppContext.getGlobalContext().random().nextInt(proxyList.size());
return (String)proxyList.get(index);
}
private static long __requestId = 0;
protected void clientConnectionRun(Socket s) {
OutputStream out = null;
String targetRequest = null;
boolean usingWWWProxy = false;
String currentProxy = null;
InactivityTimeoutThread timeoutThread = null;
long requestId = ++__requestId;
try {
out = s.getOutputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream(), "ISO-8859-1"));
......@@ -137,7 +157,7 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
StringBuffer newRequest = new StringBuffer();
while ((line = br.readLine()) != null) {
if (_log.shouldLog(Log.DEBUG))
_log.debug(getPrefix() + "Line=[" + line + "]");
_log.debug(getPrefix(requestId) + "Line=[" + line + "]");
if (line.startsWith("Connection: ") ||
line.startsWith("Keep-Alive: ") ||
......@@ -146,7 +166,7 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
if (method == null) { // first line (GET /base64/realaddr)
if (_log.shouldLog(Log.DEBUG))
_log.debug(getPrefix() + "Method is null for [" + line + "]");
_log.debug(getPrefix(requestId) + "Method is null for [" + line + "]");
int pos = line.indexOf(" ");
if (pos == -1) break;
......@@ -179,11 +199,29 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
line = method + " " + request.substring(pos);
} else if (host.indexOf(".") != -1) {
// The request must be forwarded to a WWW proxy
if (_log.shouldLog(Log.DEBUG))
_log.debug("Before selecting outproxy for " + host);
currentProxy = selectProxy();
if (_log.shouldLog(Log.DEBUG))
_log.debug("After selecting outproxy for " + host + ": " + currentProxy);
if (currentProxy == null) {
if (_log.shouldLog(Log.WARN))
_log.warn(getPrefix(requestId) + "Host wants to be outproxied, but we dont have any!");
l.log("No HTTP outproxy found for the request.");
if (out != null) {
out.write(ERR_NO_OUTPROXY);
out.write("<p /><i>Generated on: ".getBytes());
out.write(new Date().toString().getBytes());
out.write("</i></body></html>\n".getBytes());
out.flush();
}
s.close();
return;
}
destination = currentProxy;
usingWWWProxy = true;
if (_log.shouldLog(Log.DEBUG))
_log.debug(getPrefix() + "Host doesnt end with .i2p and it contains a period [" + host + "]: wwwProxy!");
_log.debug(getPrefix(requestId) + "Host doesnt end with .i2p and it contains a period [" + host + "]: wwwProxy!");
} else {
request = request.substring(pos + 1);
pos = request.indexOf("/");
......@@ -193,27 +231,27 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
boolean isValid = usingWWWProxy || isSupportedAddress(host, protocol);
if (!isValid) {
if (_log.shouldLog(Log.INFO)) _log.info(getPrefix() + "notValid(" + host + ")");
if (_log.shouldLog(Log.INFO)) _log.info(getPrefix(requestId) + "notValid(" + host + ")");
method = null;
destination = null;
break;
} else if (!usingWWWProxy) {
if (_log.shouldLog(Log.INFO)) _log.info(getPrefix() + "host=getHostName(" + destination + ")");
if (_log.shouldLog(Log.INFO)) _log.info(getPrefix(requestId) + "host=getHostName(" + destination + ")");
host = getHostName(destination); // hide original host
}
if (_log.shouldLog(Log.DEBUG)) {
_log.debug(getPrefix() + "METHOD:" + method + ":");
_log.debug(getPrefix() + "PROTOC:" + protocol + ":");
_log.debug(getPrefix() + "HOST :" + host + ":");
_log.debug(getPrefix() + "DEST :" + destination + ":");
_log.debug(getPrefix(requestId) + "METHOD:" + method + ":");
_log.debug(getPrefix(requestId) + "PROTOC:" + protocol + ":");
_log.debug(getPrefix(requestId) + "HOST :" + host + ":");
_log.debug(getPrefix(requestId) + "DEST :" + destination + ":");
}
} else {
if (line.startsWith("Host: ") && !usingWWWProxy) {
line = "Host: " + host;
if (_log.shouldLog(Log.INFO))
_log.info(getPrefix() + "Setting host = " + host);
_log.info(getPrefix(requestId) + "Setting host = " + host);
}
}
......@@ -225,7 +263,7 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
}
}
if (_log.shouldLog(Log.DEBUG))
_log.debug(getPrefix() + "NewRequest header: [" + newRequest.toString() + "]");
_log.debug(getPrefix(requestId) + "NewRequest header: [" + newRequest.toString() + "]");
while (br.ready()) { // empty the buffer (POST requests)
int i = br.read();
......@@ -247,7 +285,7 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
}
if (_log.shouldLog(Log.DEBUG))
_log.debug(getPrefix() + "Destination: " + destination);
_log.debug(getPrefix(requestId) + "Destination: " + destination);
Destination dest = I2PTunnel.destFromName(destination);
if (dest == null) {
......@@ -262,25 +300,25 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
I2PSocket i2ps = createI2PSocket(dest);
byte[] data = newRequest.toString().getBytes("ISO-8859-1");
I2PTunnelRunner runner = new I2PTunnelRunner(s, i2ps, sockLock, data);
timeoutThread = new InactivityTimeoutThread(runner, out, targetRequest, usingWWWProxy, currentProxy, s);
timeoutThread = new InactivityTimeoutThread(runner, out, targetRequest, usingWWWProxy, currentProxy, s, requestId);
timeoutThread.start();
} catch (SocketException ex) {
if (timeoutThread != null) timeoutThread.disable();
_log.info(getPrefix() + "Error trying to connect", ex);
_log.info(getPrefix(requestId) + "Error trying to connect", ex);
l.log(ex.getMessage());
handleHTTPClientException(ex, out, targetRequest, usingWWWProxy, currentProxy);
handleHTTPClientException(ex, out, targetRequest, usingWWWProxy, currentProxy, requestId);
closeSocket(s);
} catch (IOException ex) {
if (timeoutThread != null) timeoutThread.disable();
_log.info(getPrefix() + "Error trying to connect", ex);
_log.info(getPrefix(requestId) + "Error trying to connect", ex);
l.log(ex.getMessage());
handleHTTPClientException(ex, out, targetRequest, usingWWWProxy, currentProxy);
handleHTTPClientException(ex, out, targetRequest, usingWWWProxy, currentProxy, requestId);
closeSocket(s);
} catch (I2PException ex) {
if (timeoutThread != null) timeoutThread.disable();
_log.info("getPrefix() + Error trying to connect", ex);
_log.info("getPrefix(requestId) + Error trying to connect", ex);
l.log(ex.getMessage());
handleHTTPClientException(ex, out, targetRequest, usingWWWProxy, currentProxy);
handleHTTPClientException(ex, out, targetRequest, usingWWWProxy, currentProxy, requestId);
closeSocket(s);
}
}
......@@ -289,18 +327,19 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
private static volatile long __timeoutId = 0;
private class InactivityTimeoutThread extends I2PThread {
private Socket s;
private I2PTunnelRunner _runner;
private OutputStream _out;
private String _targetRequest;
private boolean _useWWWProxy;
private String _currentProxy;
private long _requestId;
private boolean _disabled;
private Object _disableLock = new Object();
public InactivityTimeoutThread(I2PTunnelRunner runner, OutputStream out, String targetRequest,
boolean useWWWProxy, String currentProxy, Socket s) {
boolean useWWWProxy, String currentProxy, Socket s, long requestId) {
this.s = s;
_runner = runner;
_out = out;
......@@ -308,8 +347,9 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
_useWWWProxy = useWWWProxy;
_currentProxy = currentProxy;
_disabled = false;
_requestId = requestId;
long timeoutId = ++__timeoutId;
setName("InactivityThread " + getPrefix() + timeoutId);
setName("InactivityThread " + getPrefix(requestId) + timeoutId);
}
public void disable() {
......@@ -322,13 +362,13 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
public void run() {
while (!_disabled) {
if (_runner.isFinished()) {
if (_log.shouldLog(Log.INFO)) _log.info(getPrefix() + "HTTP client request completed prior to timeout");
if (_log.shouldLog(Log.INFO)) _log.info(getPrefix(_requestId) + "HTTP client request completed prior to timeout");
return;
}
if (_runner.getLastActivityOn() < Clock.getInstance().now() - INACTIVITY_TIMEOUT) {
if (_runner.getStartedOn() < Clock.getInstance().now() - INACTIVITY_TIMEOUT) {
if (_log.shouldLog(Log.WARN))
_log.warn(getPrefix() + "HTTP client request timed out (lastActivity: "
_log.warn(getPrefix(_requestId) + "HTTP client request timed out (lastActivity: "
+ new Date(_runner.getLastActivityOn()) + ", startedOn: "
+ new Date(_runner.getStartedOn()) + ")");
timeout();
......@@ -349,7 +389,7 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
}
private void timeout() {
_log.info(getPrefix() + "Inactivity timeout reached");
_log.info(getPrefix(_requestId) + "Inactivity timeout reached");
l.log("Inactivity timeout reached");
if (_out != null) {
try {
......@@ -359,16 +399,17 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
writeErrorMessage(ERR_TIMEOUT, _out, _targetRequest, _useWWWProxy, _currentProxy);
}
} catch (IOException ioe) {
_log.warn(getPrefix() + "Error writing out the 'timeout' message", ioe);
_log.warn(getPrefix(_requestId) + "Error writing out the 'timeout' message", ioe);
}
} else {
_log.warn(getPrefix() + "Client disconnected before we could say we timed out");
_log.warn(getPrefix(_requestId) + "Client disconnected before we could say we timed out");
}
closeSocket(s);
}
}
private final static String getHostName(String host) {
if (host == null) return null;
try {
Destination dest = I2PTunnel.destFromName(host);
if (dest == null) return "i2p";
......@@ -394,18 +435,18 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
}
private void handleHTTPClientException(Exception ex, OutputStream out, String targetRequest,
boolean usingWWWProxy, String wwwProxy) {
boolean usingWWWProxy, String wwwProxy, long requestId) {
if (_log.shouldLog(Log.WARN))
_log.warn("Error sending to " + wwwProxy + " (proxy? " + usingWWWProxy + ", request: " + targetRequest, ex);
_log.warn(getPrefix(requestId) + "Error sending to " + wwwProxy + " (proxy? " + usingWWWProxy + ", request: " + targetRequest, ex);
if (out != null) {
try {
writeErrorMessage(ERR_DESTINATION_UNKNOWN, out, targetRequest, usingWWWProxy, wwwProxy);
} catch (IOException ioe) {
_log.warn(getPrefix() + "Error writing out the 'destination was unknown' " + "message", ioe);
_log.warn(getPrefix(requestId) + "Error writing out the 'destination was unknown' " + "message", ioe);
}
} else {
_log.warn(getPrefix() + "Client disconnected before we could say that destination " + "was unknown", ex);
_log.warn(getPrefix(requestId) + "Client disconnected before we could say that destination " + "was unknown", ex);
}
}
......
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