Reroot the exception hierarchy into a toplevel Exception class

As the alternatives are unfortunate for applications trying to catch
all library errors, and it seems deriving from std::runtime_error
causes problems with MSVC DLLs (GH #340)

Effectively reverts 2837e915d82e43

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/tls/msg_client_hello.cpp b/src/lib/tls/msg_client_hello.cpp
index 77bdc5cf5..ce20d6781 100644
--- a/src/lib/tls/msg_client_hello.cpp
+++ b/src/lib/tls/msg_client_hello.cpp
@@ -155,7 +155,7 @@ Client_Hello::Client_Hello(Handshake_IO& io,
 void Client_Hello::update_hello_cookie(const Hello_Verify_Request& hello_verify)
    {
    if(!m_version.is_datagram_protocol())
-      throw std::runtime_error("Cannot use hello cookie with stream protocol");
+      throw Exception("Cannot use hello cookie with stream protocol");
 
    m_hello_cookie = hello_verify.cookie();
    }