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Detect end-of-stream in TransportImpl#init

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OpenSSH will drop connections based on the value of MaxStartups when
there are too many unauthenticated connection. When this happens, reads
on the client socket return -1, which was previously inserted into the
identification buffer, leading to the error in #118.
This commit is contained in:
Billy Keyes
2015-03-13 15:03:36 -07:00
parent 5fc08a3fc8
commit 3ebd2eb363
1 changed files with 4 additions and 1 deletions
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5
src/main/java/net/schmizz/sshj/transport/TransportImpl.java
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@@ -158,7 +158,10 @@ public final class TransportImpl
// Read server's ID // Read server's ID
final Buffer.PlainBuffer buf = new Buffer.PlainBuffer(); final Buffer.PlainBuffer buf = new Buffer.PlainBuffer();
while ((serverID = readIdentification(buf)).isEmpty()) { while ((serverID = readIdentification(buf)).isEmpty()) {
buf.putByte((byte) connInfo.in.read()); int b = connInfo.in.read();
if (b == -1)
throw new TransportException("Server closed connection during identification exchange");
buf.putByte((byte) b);
} }
log.info("Server identity string: {}", serverID); log.info("Server identity string: {}", serverID);