--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/com/trilead/ssh2/transport/ClientServerHello.java	Thu May 22 10:41:19 2014 -0700
@@ -0,0 +1,113 @@
+
+package com.trilead.ssh2.transport;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.UnsupportedEncodingException;
+
+import com.trilead.ssh2.Connection;
+
+/**
+ * ClientServerHello.
+ *
+ * @author Christian Plattner, plattner@trilead.com
+ * @version $Id: ClientServerHello.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
+ */
+public class ClientServerHello {
+    String server_line;
+    String client_line;
+
+    String server_versioncomment;
+
+    public final static int readLineRN(InputStream is, byte[] buffer) throws IOException {
+        int pos = 0;
+        boolean need10 = false;
+        int len = 0;
+
+        while (true) {
+            int c = is.read();
+
+            if (c == -1)
+                throw new IOException("Premature connection close");
+
+            buffer[pos++] = (byte) c;
+
+            if (c == 13) {
+                need10 = true;
+                continue;
+            }
+
+            if (c == 10)
+                break;
+
+            if (need10 == true)
+                throw new IOException("Malformed line sent by the server, the line does not end correctly.");
+
+            len++;
+
+            if (pos >= buffer.length)
+                throw new IOException("The server sent a too long line.");
+        }
+
+        return len;
+    }
+
+    public ClientServerHello(InputStream bi, OutputStream bo) throws IOException {
+        client_line = "SSH-2.0-" + Connection.identification;
+        bo.write((client_line + "\r\n").getBytes("ISO-8859-1"));
+        bo.flush();
+        byte[] serverVersion = new byte[512];
+
+        for (int i = 0; i < 50; i++) {
+            int len = readLineRN(bi, serverVersion);
+            server_line = new String(serverVersion, 0, len, "ISO-8859-1");
+
+            if (server_line.startsWith("SSH-"))
+                break;
+        }
+
+        if (server_line.startsWith("SSH-") == false)
+            throw new IOException(
+                "Malformed server identification string. There was no line starting with 'SSH-' amongst the first 50 lines.");
+
+        if (server_line.startsWith("SSH-1.99-"))
+            server_versioncomment = server_line.substring(9);
+        else if (server_line.startsWith("SSH-2.0-"))
+            server_versioncomment = server_line.substring(8);
+        else
+            throw new IOException("Server uses incompatible protocol, it is not SSH-2 compatible.");
+    }
+
+    /**
+     * @return Returns the client_versioncomment.
+     */
+    public byte[] getClientString() {
+        byte[] result;
+
+        try {
+            result = client_line.getBytes("ISO-8859-1");
+        }
+        catch (UnsupportedEncodingException ign) {
+            result = client_line.getBytes();
+        }
+
+        return result;
+    }
+
+    /**
+     * @return Returns the server_versioncomment.
+     */
+    public byte[] getServerString() {
+        byte[] result;
+
+        try {
+            result = server_line.getBytes("ISO-8859-1");
+        }
+        catch (UnsupportedEncodingException ign) {
+            result = server_line.getBytes();
+        }
+
+        return result;
+    }
+}