# HG changeset patch
# User weyllor <weyllor@gmail.com>
# Date 1396277749 -28800
#      Mon Mar 31 22:55:49 2014 +0800
# Node ID 2c103903d00e4c547d644426532ed3ef1016a77e
# Parent  7aa593ce8ceaf0199504fff27455bbb60eedabc7
add suggested auth methos from server to error info

diff --git a/ssh/client_auth.go b/ssh/client_auth.go
--- a/ssh/client_auth.go
+++ b/ssh/client_auth.go
@@ -27,7 +27,7 @@
 	}
 	// during the authentication phase the client first attempts the "none" method
 	// then any untried methods suggested by the server.
-	tried, remain := make(map[string]bool), make(map[string]bool)
+	suggested, tried, remain := make(map[string]bool), make(map[string]bool), make(map[string]bool)
 	for auth := ClientAuth(new(noneAuth)); auth != nil; {
 		ok, methods, err := auth.auth(c.transport.sessionID, c.config.User, c.transport, c.config.rand())
 		if err != nil {
@@ -44,6 +44,7 @@
 				// if we've tried meth already, skip it.
 				continue
 			}
+			suggested[meth] = true
 			remain[meth] = true
 		}
 		auth = nil
@@ -54,7 +55,7 @@
 			}
 		}
 	}
-	return fmt.Errorf("ssh: unable to authenticate, attempted methods %v, no supported methods remain", keys(tried))
+	return fmt.Errorf("ssh: unable to authenticate, suggested methods %v, attempted methods %v, no supported methods remain", keys(suggested), keys(tried))
 }
 
 func keys(m map[string]bool) (s []string) {