Merge pull request #7 from randombit/master

Update to match current Botan

45 files changed, 3096 insertions, 135 deletions

diff --git a/src/tests/data/x509test/InvalidExtendedKeyUsage.pem b/src/tests/data/x509test/InvalidExtendedKeyUsage.pem
new file mode 100644
index 000000000..1077d478f
--- /dev/null
+++ b/src/tests/data/x509test/InvalidExtendedKeyUsage.pem
@@ -0,0 +1,39 @@
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diff --git a/src/tests/data/x509test/InvalidIntCAFlag.pem b/src/tests/data/x509test/InvalidIntCAFlag.pem
new file mode 100644
index 000000000..bf8eadbb4
--- /dev/null
+++ b/src/tests/data/x509test/InvalidIntCAFlag.pem
@@ -0,0 +1,97 @@
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diff --git a/src/tests/data/x509test/InvalidIntCAKeyUsage.pem b/src/tests/data/x509test/InvalidIntCAKeyUsage.pem
new file mode 100644
index 000000000..46ea7094f
--- /dev/null
+++ b/src/tests/data/x509test/InvalidIntCAKeyUsage.pem
@@ -0,0 +1,97 @@
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new file mode 100644
index 000000000..212cad56f
--- /dev/null
+++ b/src/tests/data/x509test/InvalidIntCASelfSign.pem
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--- /dev/null
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--- /dev/null
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index 000000000..f91e83b32
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new file mode 100644
index 000000000..ef6992c09
--- /dev/null
+++ b/src/tests/data/x509test/InvalidWildcardSingle.pem
@@ -0,0 +1,37 @@
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index 000000000..2c4157cc5
--- /dev/null
+++ b/src/tests/data/x509test/InvalidWildcardSingleAltName.pem
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new file mode 100644
index 000000000..7ed001ef8
--- /dev/null
+++ b/src/tests/data/x509test/MissingIntCABasicConstraintWithCertSign.pem
@@ -0,0 +1,97 @@
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diff --git a/src/tests/data/x509test/MissingIntCAExtensions.pem b/src/tests/data/x509test/MissingIntCAExtensions.pem
new file mode 100644
index 000000000..ce5d7ca25
--- /dev/null
+++ b/src/tests/data/x509test/MissingIntCAExtensions.pem
@@ -0,0 +1,97 @@
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index 000000000..5ac372128
--- /dev/null
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index 000000000..a7248de4c
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new file mode 100644
index 000000000..3085e0cb3
--- /dev/null
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+-----BEGIN CERTIFICATE-----
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+-----BEGIN CERTIFICATE-----
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
diff --git a/src/tests/data/x509test/ValidWildcard.pem b/src/tests/data/x509test/ValidWildcard.pem
new file mode 100644
index 000000000..80e38c6f4
--- /dev/null
+++ b/src/tests/data/x509test/ValidWildcard.pem
@@ -0,0 +1,37 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----
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+dRcxFarWaAJVGhJ+p6kWJt7XJnK341bP
+-----END CERTIFICATE-----
diff --git a/src/tests/data/x509test/expected.txt b/src/tests/data/x509test/expected.txt
new file mode 100644
index 000000000..67e2937eb
--- /dev/null
+++ b/src/tests/data/x509test/expected.txt
@@ -0,0 +1,43 @@
+InvalidExtendedKeyUsage.pem:Invalid usage
+InvalidIntCAFlag.pem:CA certificate not allowed to issue certs
+InvalidIntCAKeyUsage.pem:CA certificate not allowed to issue certs
+InvalidIntCALen.pem:Certificate chain too long
+InvalidIntCALoop.pem:Loop in certificate chain
+InvalidIntCASelfSign.pem:Cannot establish trust
+InvalidIntCAVersionOne.pem:CA certificate not allowed to issue certs
+InvalidIntCAVersionTwo.pem:CA certificate not allowed to issue certs
+InvalidKeyUsage.pem:Invalid usage
+InvalidName.pem:Certificate does not match provided name
+InvalidNameAltName.pem:Certificate does not match provided name
+InvalidNameAltNameWithSubj.pem:Certificate does not match provided name
+InvalidNotAfter.pem:Certificate has expired
+InvalidNotAfterChained.pem:Certificate has expired
+InvalidSelfSign.pem:Cannot establish trust
+InvalidWildcardAll.pem:Certificate does not match provided name
+InvalidWildcardAllAltName.pem:Certificate does not match provided name
+InvalidWildcardLeft.pem:Certificate does not match provided name
+InvalidWildcardLeftAltName.pem:Certificate does not match provided name
+InvalidWildcardMid.pem:Certificate does not match provided name
+InvalidWildcardMidAltName.pem:Certificate does not match provided name
+InvalidWildcardMidMixed.pem:Certificate does not match provided name
+InvalidWildcardMidMixedAltName.pem:Certificate does not match provided name
+InvalidWildcardSingle.pem:Certificate does not match provided name
+InvalidWildcardSingleAltName.pem:Certificate does not match provided name
+MissingIntCABasicConstraintWithCertSign.pem:CA certificate not allowed to issue certs
+MissingIntCAExtensions.pem:CA certificate not allowed to issue certs
+ValidAltName.pem:Verified
+ValidCert.pem:Verified
+ValidChained.pem:Verified
+ValidIntCALen.pem:Verified
+ValidWildcard.pem:Verified
+
+# Need to fix date settings in x509test and regen
+#InvalidNotBefore.pem:Certificate is not yet valid
+#InvalidNotBeforeChained.pem:Certificate is not yet valid
+
+# Missing name constraints
+InvalidNameConstraintExclude.pem:Certificate issuer not found
+InvalidNameConstraintPermit.pem:Certificate issuer not found
+InvalidNameConstraintPermitRight.pem:Certificate issuer not found
+InvalidNameConstraintPermitThenExclude.pem:Certificate issuer not found
+ValidNameConstraint.pem:Certificate issuer not found
diff --git a/src/tests/data/x509test/root.pem b/src/tests/data/x509test/root.pem
new file mode 100644
index 000000000..b6b894a04
--- /dev/null
+++ b/src/tests/data/x509test/root.pem
@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----
+MIIDFDCCAn2gAwIBAgICA+kwDQYJKoZIhvcNAQEFBQAwgcQxCzAJBgNVBAYTAlVT
+MQswCQYDVQQIDAJDQTEYMBYGA1UEBwwPU2FuIEx1aXMgT2Jpc3BvMS4wLAYDVQQK
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+slppJEaBHTY5/bGGWwV/0t3WMDNFaMrFgcsEY/KjUSyfWh9c6BHOdr21MmNe4YDh
+T8gv9TmcGNsEJRIYD1jly3tCDyA2W0AUIzob1GMGkV8ddKBUrmt/+qLzagxdOrQ0
+dRcxFarWaAJVGhJ+p6kWJt7XJnK341bP
+-----END CERTIFICATE-----
diff --git a/src/tests/nist_x509.cpp b/src/tests/nist_x509.cpp
index 04b569d32..65e154293 100644
--- a/src/tests/nist_x509.cpp
+++ b/src/tests/nist_x509.cpp
@@ -1,16 +1,7 @@
 /*
-* (C) 2006,2011,2012,2014 Jack Lloyd
+* (C) 2006,2011,2012,2014,2015 Jack Lloyd
 *
 * Botan is released under the Simplified BSD License (see license.txt)
-*
-* Code to run the X.509v3 processing tests described in "Conformance
-*  Testing of Relying Party Client Certificate Path Proccessing Logic",
-*  which is available on NIST's web site.
-*
-* Known Failures/Problems:
-*  - Policy extensions are not implemented, so we skip tests #34-#53.
-*  - Tests #75 and #76 are skipped as they make use of relatively
-*    obscure CRL extensions which are not supported.
 */
 
 #include "tests.h"
@@ -22,6 +13,7 @@
 
 #include <algorithm>
 #include <iostream>
+#include <fstream>
 #include <iomanip>
 #include <string>
 #include <vector>
@@ -32,11 +24,110 @@ using namespace Botan;
 
 std::map<size_t, Path_Validation_Result::Code> get_expected();
 
+namespace {
+
+std::vector<X509_Certificate> load_cert_file(const std::string& filename)
+   {
+   DataSource_Stream in(filename);
+
+   std::vector<X509_Certificate> certs;
+   while(!in.end_of_data())
+      {
+      try {
+      certs.emplace_back(in);
+      }
+      catch(Decoding_Error) {}
+      }
+
+   return certs;
+   }
+
+std::map<std::string, std::string> read_results(const std::string& results_file)
+   {
+   std::ifstream in(results_file);
+   if(!in.good())
+      throw std::runtime_error("Failed reading " + results_file);
+
+   std::map<std::string, std::string> m;
+   std::string line;
+   while(in.good())
+      {
+      std::getline(in, line);
+      if(line == "")
+         continue;
+      if(line[0] == '#')
+         continue;
+
+      std::vector<std::string> parts = split_on(line, ':');
+
+      if(parts.size() != 2)
+         throw std::runtime_error("Invalid line " + line);
+
+      m[parts[0]] = parts[1];
+      }
+
+   return m;
+   }
+
+}
+
+size_t test_x509_x509test()
+   {
+   // Test certs generated by https://github.com/yymax/x509test
+   const std::string test_dir = "src/tests/data/x509test";
+
+   std::map<std::string, std::string> results = read_results(test_dir + "/expected.txt");
+
+   const Path_Validation_Restrictions default_restrictions;
+
+   size_t fail = 0;
+
+   X509_Certificate root(test_dir + "/root.pem");
+   Certificate_Store_In_Memory trusted;
+   trusted.add_certificate(root);
+
+   for(auto i = results.begin(); i != results.end(); ++i)
+      {
+      const std::string fsname = i->first;
+      const std::string expected = i->second;
+
+      std::vector<X509_Certificate> certs = load_cert_file(test_dir + "/" + fsname);
+
+      if(certs.empty())
+         throw std::runtime_error("Failed to read certs from " + fsname);
+
+      Path_Validation_Result result = x509_path_validate(certs, default_restrictions, trusted,
+                                                         "www.tls.test", Usage_Type::TLS_SERVER_AUTH);
+
+      if(result.successful_validation() && result.trust_root() != root)
+         result = Path_Validation_Result(Certificate_Status_Code::CANNOT_ESTABLISH_TRUST);
+
+      if(result.result_string() != expected)
+         {
+         std::cout << "FAIL " << fsname << " expected '" << expected << "' got '" << result.result_string() << "'\n";
+         ++fail;
+         }
+      }
+
+   test_report("X.509 (x509test)", results.size(), fail);
+
+   return fail;
+   }
+
 size_t test_nist_x509()
    {
+   /**
+   * Code to run the X.509v3 processing tests described in "Conformance
+   *  Testing of Relying Party Client Certificate Path Proccessing Logic",
+   *  which is available on NIST's web site.
+   *
+   * Known Failures/Problems:
+   *  - Policy extensions are not implemented, so we skip tests #34-#53.
+   *  - Tests #75 and #76 are skipped as they make use of relatively
+   *    obscure CRL extensions which are not supported.
+   */
    const std::string root_test_dir = "src/tests/data/nist_x509/";
    const size_t total_tests = 76;
-
    try
       {
       // Do nothing, just test filesystem access
@@ -61,8 +152,8 @@ size_t test_nist_x509()
    for(size_t test_no = 1; test_no <= total_tests; ++test_no)
       {
       const std::string test_dir = root_test_dir + "/test" + (test_no <= 9 ? "0" : "") + std::to_string(test_no);
-      
-      const std::vector<std::string> all_files = get_files_recursive(test_dir);    
+
+      const std::vector<std::string> all_files = get_files_recursive(test_dir);
       if (all_files.empty())
          std::cout << "Warning: No test files found in '" << test_dir << "'" << std::endl;
 
@@ -83,6 +174,7 @@ size_t test_nist_x509()
 
       if(expected_results.find(test_no) == expected_results.end())
          {
+         //printf("Skipping %d\n", test_no);
          skipped++;
          continue;
          }
@@ -284,6 +376,7 @@ std::map<size_t, Path_Validation_Result::Code> get_expected()
 
 #else
 
+size_t test_x509_x509test() { return 0; }
 size_t test_nist_x509() { return 0; }
 
 #endif
diff --git a/src/tests/tests.cpp b/src/tests/tests.cpp
index d213b6a3a..61378b1a2 100644
--- a/src/tests/tests.cpp
+++ b/src/tests/tests.cpp
@@ -38,10 +38,10 @@ size_t run_tests_in_dir(const std::string& dir, std::function<size_t (const std:
    try
       {
       auto files = get_files_recursive(dir);
-      
+
       if (files.empty())
          std::cout << "Warning: No test files found in '" << dir << "'" << std::endl;
-      
+
       for(const auto file: files)
          fails += fn(file);
       }
@@ -312,6 +312,7 @@ int main(int argc, char* argv[])
    DEF_TEST(pk_keygen);
    DEF_TEST(cvc);
    DEF_TEST(x509);
+   DEF_TEST(x509_x509test);
    DEF_TEST(nist_x509);
    DEF_TEST(tls);
    DEF_TEST(compression);
diff --git a/src/tests/tests.h b/src/tests/tests.h
index 6d6a2d34c..1e496ccb2 100644
--- a/src/tests/tests.h
+++ b/src/tests/tests.h
@@ -165,6 +165,7 @@ size_t test_ecdsa_unit();
 size_t test_ecdh_unit();
 
 size_t test_x509();
+size_t test_x509_x509test();
 size_t test_cvc();
 
 size_t test_tls();
diff --git a/src/tests/unit_tls.cpp b/src/tests/unit_tls.cpp
index 116eb2cdf..d4abef119 100644
--- a/src/tests/unit_tls.cpp
+++ b/src/tests/unit_tls.cpp
@@ -11,6 +11,7 @@
 
 #include <botan/tls_server.h>
 #include <botan/tls_client.h>
+#include <botan/tls_handshake_msg.h>
 #include <botan/pkcs10.h>
 #include <botan/x509self.h>
 #include <botan/rsa.h>
@@ -21,6 +22,7 @@
 #include <iostream>
 #include <vector>
 #include <memory>
+#include <thread>
 
 using namespace Botan;
 
@@ -155,158 +157,441 @@ Credentials_Manager* create_creds()
    return new Credentials_Manager_Test(server_cert, ca_cert, server_key);
    }
 
-size_t basic_test_handshake(RandomNumberGenerator& rng,
-                            TLS::Protocol_Version offer_version,
-                            Credentials_Manager& creds,
-                            TLS::Policy& policy)
+std::function<void (const byte[], size_t)> queue_inserter(std::vector<byte>& q)
    {
-   TLS::Session_Manager_In_Memory server_sessions(rng);
-   TLS::Session_Manager_In_Memory client_sessions(rng);
-
-   std::vector<byte> c2s_q, s2c_q, c2s_data, s2c_data;
+   return [&](const byte buf[], size_t sz) { q.insert(q.end(), buf, buf + sz); };
+   }
 
-   auto handshake_complete = [&](const TLS::Session& session) -> bool
+void print_alert(TLS::Alert alert, const byte[], size_t)
    {
-      if(session.version() != offer_version)
-         std::cout << "Offered " << offer_version.to_string()
-                   << " got " << session.version().to_string() << std::endl;
-      return true;
+   //std::cout << "Alert " << alert.type_string() << std::endl;
    };
 
-   auto print_alert = [&](TLS::Alert alert, const byte[], size_t)
+void mutate(std::vector<byte>& v, RandomNumberGenerator& rng)
    {
-      if(alert.is_valid())
-         std::cout << "Server recvd alert " << alert.type_string() << std::endl;
-   };
+   if(v.empty())
+      return;
 
-   auto save_server_data = [&](const byte buf[], size_t sz)
-   {
-      c2s_data.insert(c2s_data.end(), buf, buf+sz);
-   };
+   size_t voff = rng.get_random<size_t>() % v.size();
+   v[voff] ^= rng.next_nonzero_byte();
+ }
 
-   auto save_client_data = [&](const byte buf[], size_t sz)
+size_t test_tls_handshake(RandomNumberGenerator& rng,
+                          TLS::Protocol_Version offer_version,
+                          Credentials_Manager& creds,
+                          TLS::Policy& policy)
    {
-      s2c_data.insert(s2c_data.end(), buf, buf+sz);
-   };
+   TLS::Session_Manager_In_Memory server_sessions(rng);
+   TLS::Session_Manager_In_Memory client_sessions(rng);
 
-   auto next_protocol_chooser = [&](std::vector<std::string> protos) {
-      if(protos.size() != 2)
-         std::cout << "Bad protocol size" << std::endl;
-      if(protos[0] != "test/1" || protos[1] != "test/2")
-         std::cout << "Bad protocol values" << std::endl;
-      return "test/3";
-   };
-   const std::vector<std::string> protocols_offered = { "test/1", "test/2" };
-
-   TLS::Server server([&](const byte buf[], size_t sz)
-                      { s2c_q.insert(s2c_q.end(), buf, buf+sz); },
-                      save_server_data,
-                      print_alert,
-                      handshake_complete,
-                      server_sessions,
-                      creds,
-                      policy,
-                      rng,
-                      next_protocol_chooser,
-                      offer_version.is_datagram_protocol());
-
-   TLS::Client client([&](const byte buf[], size_t sz)
-                      { c2s_q.insert(c2s_q.end(), buf, buf+sz); },
-                      save_client_data,
-                      print_alert,
-                      handshake_complete,
-                      client_sessions,
-                      creds,
-                      policy,
-                      rng,
-                      TLS::Server_Information("server.example.com"),
-                      offer_version,
-                      protocols_offered);
-
-   while(true)
+   for(size_t r = 1; r <= 4; ++r)
       {
-      if(client.is_closed() && server.is_closed())
-         break;
+      //std::cout << offer_version.to_string() << " r " << r << "\n";
 
-      if(client.is_active())
-         client.send("1");
-      if(server.is_active())
-         {
-         if(server.next_protocol() != "test/3")
-            std::cout << "Wrong protocol " << server.next_protocol() << std::endl;
-         server.send("2");
-         }
+      bool handshake_done = false;
 
-      /*
-      * Use this as a temp value to hold the queues as otherwise they
-      * might end up appending more in response to messages during the
-      * handshake.
-      */
-      std::vector<byte> input;
-      std::swap(c2s_q, input);
+      auto handshake_complete = [&](const TLS::Session& session) -> bool {
+         handshake_done = true;
 
-      try
-         {
-         server.received_data(input.data(), input.size());
-         }
-      catch(std::exception& e)
-         {
-         std::cout << "Server error - " << e.what() << std::endl;
-         return 1;
-         }
+         /*
+         std::cout << "Session established " << session.version().to_string() << " "
+                   << session.ciphersuite().to_string() << " " << hex_encode(session.session_id()) << "\n";
+         */
+
+         if(session.version() != offer_version)
+            std::cout << "Offered " << offer_version.to_string()
+                      << " got " << session.version().to_string() << std::endl;
+         return true;
+         };
 
-      input.clear();
-      std::swap(s2c_q, input);
+      auto next_protocol_chooser = [&](std::vector<std::string> protos) {
+         if(protos.size() != 2)
+            std::cout << "Bad protocol size" << std::endl;
+         if(protos[0] != "test/1" || protos[1] != "test/2")
+            std::cout << "Bad protocol values" << std::endl;
+         return "test/3";
+      };
+
+      const std::vector<std::string> protocols_offered = { "test/1", "test/2" };
 
       try
          {
-         client.received_data(input.data(), input.size());
+         std::vector<byte> c2s_traffic, s2c_traffic, client_recv, server_recv, client_sent, server_sent;
+
+         TLS::Server server(queue_inserter(s2c_traffic),
+                            queue_inserter(server_recv),
+                            print_alert,
+                            handshake_complete,
+                            server_sessions,
+                            creds,
+                            policy,
+                            rng,
+                            next_protocol_chooser,
+                            false);
+
+         TLS::Client client(queue_inserter(c2s_traffic),
+                            queue_inserter(client_recv),
+                            print_alert,
+                            handshake_complete,
+                            client_sessions,
+                            creds,
+                            policy,
+                            rng,
+                            TLS::Server_Information("server.example.com"),
+                            offer_version,
+                            protocols_offered);
+
+         size_t rounds = 0;
+
+         while(true)
+            {
+            ++rounds;
+
+            if(rounds > 25)
+               {
+               std::cout << "Still here, something went wrong\n";
+               return 1;
+               }
+
+            if(handshake_done && (client.is_closed() || server.is_closed()))
+               break;
+
+            if(client.is_active() && client_sent.empty())
+               {
+               // Choose a len between 1 and 511
+               const size_t c_len = 1 + rng.next_byte() + rng.next_byte();
+               client_sent = unlock(rng.random_vec(c_len));
+
+               // TODO send in several records
+               client.send(client_sent);
+               }
+
+            if(server.is_active() && server_sent.empty())
+               {
+               if(server.next_protocol() != "test/3")
+                  std::cout << "Wrong protocol " << server.next_protocol() << std::endl;
+
+               const size_t s_len = 1 + rng.next_byte() + rng.next_byte();
+               server_sent = unlock(rng.random_vec(s_len));
+               server.send(server_sent);
+               }
+
+            const bool corrupt_client_data = (r == 3 && c2s_traffic.size() && rng.next_byte() % 3 == 0 && rounds > 1);
+            const bool corrupt_server_data = (r == 4 && s2c_traffic.size() && rng.next_byte() % 3 == 0 && rounds > 1);
+
+            try
+               {
+               /*
+               * Use this as a temp value to hold the queues as otherwise they
+               * might end up appending more in response to messages during the
+               * handshake.
+               */
+               //std::cout << "server recv " << c2s_traffic.size() << " bytes\n";
+               std::vector<byte> input;
+               std::swap(c2s_traffic, input);
+
+               if(corrupt_server_data)
+                  {
+                  //std::cout << "Corrupting server data\n";
+                  mutate(input, rng);
+                  }
+               server.received_data(input.data(), input.size());
+               }
+            catch(std::exception& e)
+               {
+               std::cout << "Server error - " << e.what() << std::endl;
+               continue;
+               }
+
+            try
+               {
+               //std::cout << "client recv " << s2c_traffic.size() << " bytes\n";
+               std::vector<byte> input;
+               std::swap(s2c_traffic, input);
+               if(corrupt_client_data)
+                  {
+                  //std::cout << "Corrupting client data\n";
+                  mutate(input, rng);
+                  }
+
+               client.received_data(input.data(), input.size());
+               }
+            catch(std::exception& e)
+               {
+               std::cout << "Client error - " << e.what() << std::endl;
+               continue;
+               }
+
+            if(client_recv.size())
+               {
+               if(client_recv != server_sent)
+                  {
+                  std::cout << "Error in client recv" << std::endl;
+                  return 1;
+                  }
+               }
+
+            if(server_recv.size())
+               {
+               if(server_recv != client_sent)
+                  {
+                  std::cout << "Error in server recv" << std::endl;
+                  return 1;
+                  }
+               }
+
+            if(client.is_closed() && server.is_closed())
+               break;
+
+            if(server_recv.size() && client_recv.size())
+               {
+               SymmetricKey client_key = client.key_material_export("label", "context", 32);
+               SymmetricKey server_key = server.key_material_export("label", "context", 32);
+
+               if(client_key != server_key)
+                  {
+                  std::cout << "TLS key material export mismatch: "
+                            << client_key.as_string() << " != "
+                            << server_key.as_string() << "\n";
+                  return 1;
+                  }
+
+               if(r % 2 == 0)
+                  client.close();
+               else
+                  server.close();
+               }
+            }
          }
       catch(std::exception& e)
          {
-         std::cout << "Client error - " << e.what() << std::endl;
+         std::cout << e.what() << "\n";
          return 1;
          }
+      }
 
-      if(c2s_data.size())
-         {
-         if(c2s_data[0] != '1')
-            {
-            std::cout << "Error" << std::endl;
-            return 1;
-            }
-         }
+   return 0;
+   }
+
+size_t test_dtls_handshake(RandomNumberGenerator& rng,
+                            TLS::Protocol_Version offer_version,
+                            Credentials_Manager& creds,
+                            TLS::Policy& policy)
+   {
+   BOTAN_ASSERT(offer_version.is_datagram_protocol(), "Test is for datagram version");
+
+   TLS::Session_Manager_In_Memory server_sessions(rng);
+   TLS::Session_Manager_In_Memory client_sessions(rng);
+
+   for(size_t r = 1; r <= 2; ++r)
+      {
+      //std::cout << offer_version.to_string() << " round " << r << "\n";
+
+      bool handshake_done = false;
+
+      auto handshake_complete = [&](const TLS::Session& session) -> bool {
+         handshake_done = true;
 
-      if(s2c_data.size())
+         /*
+         std::cout << "Session established " << session.version().to_string() << " "
+                   << session.ciphersuite().to_string() << " " << hex_encode(session.session_id()) << "\n";
+         */
+
+         if(session.version() != offer_version)
+            std::cout << "Offered " << offer_version.to_string()
+                      << " got " << session.version().to_string() << std::endl;
+         return true;
+         };
+
+      auto next_protocol_chooser = [&](std::vector<std::string> protos) {
+         if(protos.size() != 2)
+            std::cout << "Bad protocol size" << std::endl;
+         if(protos[0] != "test/1" || protos[1] != "test/2")
+            std::cout << "Bad protocol values" << std::endl;
+         return "test/3";
+      };
+
+      const std::vector<std::string> protocols_offered = { "test/1", "test/2" };
+
+      try
          {
-         if(s2c_data[0] != '2')
+         std::vector<byte> c2s_traffic, s2c_traffic, client_recv, server_recv, client_sent, server_sent;
+
+         TLS::Server server(queue_inserter(s2c_traffic),
+                            queue_inserter(server_recv),
+                            print_alert,
+                            handshake_complete,
+                            server_sessions,
+                            creds,
+                            policy,
+                            rng,
+                            next_protocol_chooser,
+                            true);
+
+         TLS::Client client(queue_inserter(c2s_traffic),
+                            queue_inserter(client_recv),
+                            print_alert,
+                            handshake_complete,
+                            client_sessions,
+                            creds,
+                            policy,
+                            rng,
+                            TLS::Server_Information("server.example.com"),
+                            offer_version,
+                            protocols_offered);
+
+         size_t rounds = 0;
+
+         while(true)
             {
-            std::cout << "Error" << std::endl;
-            return 1;
-            }
-         }
+            // TODO: client and server should be in different threads
+            std::this_thread::sleep_for(std::chrono::milliseconds(rng.next_byte() % 2));
+            ++rounds;
 
-      if(s2c_data.size() && c2s_data.size())
-         {
-         SymmetricKey client_key = client.key_material_export("label", "context", 32);
-         SymmetricKey server_key = server.key_material_export("label", "context", 32);
+            if(rounds > 100)
+               {
+               std::cout << "Still here, something went wrong\n";
+               return 1;
+               }
+
+            if(handshake_done && (client.is_closed() || server.is_closed()))
+               break;
+
+            if(client.is_active() && client_sent.empty())
+               {
+               // Choose a len between 1 and 511 and send random chunks:
+               const size_t c_len = 1 + rng.next_byte() + rng.next_byte();
+               client_sent = unlock(rng.random_vec(c_len));
+
+               // TODO send multiple parts
+               //std::cout << "Sending " << client_sent.size() << " bytes to server\n";
+               client.send(client_sent);
+               }
 
-         if(client_key != server_key)
-            return 1;
+            if(server.is_active() && server_sent.empty())
+               {
+               if(server.next_protocol() != "test/3")
+                  std::cout << "Wrong protocol " << server.next_protocol() << std::endl;
+
+               const size_t s_len = 1 + rng.next_byte() + rng.next_byte();
+               server_sent = unlock(rng.random_vec(s_len));
+               //std::cout << "Sending " << server_sent.size() << " bytes to client\n";
+               server.send(server_sent);
+               }
+
+            const bool corrupt_client_data = (r == 3 && c2s_traffic.size() && rng.next_byte() % 3 == 0 && rounds < 10);
+            const bool corrupt_server_data = (r == 4 && s2c_traffic.size() && rng.next_byte() % 3 == 0 && rounds < 10);
+
+            try
+               {
+               /*
+               * Use this as a temp value to hold the queues as otherwise they
+               * might end up appending more in response to messages during the
+               * handshake.
+               */
+               //std::cout << "server got " << c2s_traffic.size() << " bytes\n";
+               std::vector<byte> input;
+               std::swap(c2s_traffic, input);
+
+               if(corrupt_client_data)
+                  {
+                  //std::cout << "Corrupting client data\n";
+                  mutate(input, rng);
+                  }
+
+               server.received_data(input.data(), input.size());
+               }
+            catch(std::exception& e)
+               {
+               std::cout << "Server error - " << e.what() << std::endl;
+               continue;
+               }
+
+            try
+               {
+               //std::cout << "client got " << s2c_traffic.size() << " bytes\n";
+               std::vector<byte> input;
+               std::swap(s2c_traffic, input);
+
+               if(corrupt_server_data)
+                  {
+                  //std::cout << "Corrupting server data\n";
+                  mutate(input, rng);
+                  }
+               client.received_data(input.data(), input.size());
+               }
+            catch(std::exception& e)
+               {
+               std::cout << "Client error - " << e.what() << std::endl;
+               continue;
+               }
 
-         server.close();
-         client.close();
+            // If we corrupted a DTLS application message, resend it:
+            if(client.is_active() && corrupt_client_data && server_recv.empty())
+               client.send(client_sent);
+            if(server.is_active() && corrupt_server_data && client_recv.empty())
+               server.send(server_sent);
+
+            if(client_recv.size())
+               {
+               if(client_recv != server_sent)
+                  {
+                  std::cout << "Error in client recv" << std::endl;
+                  return 1;
+                  }
+               }
+
+            if(server_recv.size())
+               {
+               if(server_recv != client_sent)
+                  {
+                  std::cout << "Error in server recv" << std::endl;
+                  return 1;
+                  }
+               }
+
+            if(client.is_closed() && server.is_closed())
+               break;
+
+            if(server_recv.size() && client_recv.size())
+               {
+               SymmetricKey client_key = client.key_material_export("label", "context", 32);
+               SymmetricKey server_key = server.key_material_export("label", "context", 32);
+
+               if(client_key != server_key)
+                  {
+                  std::cout << "TLS key material export mismatch: "
+                            << client_key.as_string() << " != "
+                            << server_key.as_string() << "\n";
+                  return 1;
+                  }
+
+               if(r % 2 == 0)
+                  client.close();
+               else
+                  server.close();
+               }
+            }
+         }
+      catch(std::exception& e)
+         {
+         std::cout << e.what() << "\n";
+         return 1;
          }
       }
 
    return 0;
    }
 
-class Test_Policy : public TLS::Policy
+class Test_Policy : public TLS::Text_Policy
    {
    public:
+      Test_Policy() : Text_Policy("") {}
       bool acceptable_protocol_version(TLS::Protocol_Version) const override { return true; }
       bool send_fallback_scsv(TLS::Protocol_Version) const override { return false; }
+
+      size_t dtls_initial_timeout() const override { return 1; }
+      size_t dtls_maximum_timeout() const override { return 8; }
    };
 
 }
@@ -315,17 +600,43 @@ size_t test_tls()
    {
    size_t errors = 0;
 
-   Test_Policy default_policy;
    auto& rng = test_rng();
    std::unique_ptr<Credentials_Manager> basic_creds(create_creds());
 
-   errors += basic_test_handshake(rng, TLS::Protocol_Version::TLS_V10, *basic_creds, default_policy);
-   errors += basic_test_handshake(rng, TLS::Protocol_Version::TLS_V11, *basic_creds, default_policy);
-   errors += basic_test_handshake(rng, TLS::Protocol_Version::TLS_V12, *basic_creds, default_policy);
-   errors += basic_test_handshake(rng, TLS::Protocol_Version::DTLS_V10, *basic_creds, default_policy);
-   errors += basic_test_handshake(rng, TLS::Protocol_Version::DTLS_V12, *basic_creds, default_policy);
-
-   test_report("TLS", 5, errors);
+   Test_Policy policy;
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V10, *basic_creds, policy);
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V11, *basic_creds, policy);
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V12, *basic_creds, policy);
+   errors += test_dtls_handshake(rng, TLS::Protocol_Version::DTLS_V10, *basic_creds, policy);
+   errors += test_dtls_handshake(rng, TLS::Protocol_Version::DTLS_V12, *basic_creds, policy);
+
+   policy.set("key_exchange_methods", "RSA");
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V10, *basic_creds, policy);
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V11, *basic_creds, policy);
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V12, *basic_creds, policy);
+   errors += test_dtls_handshake(rng, TLS::Protocol_Version::DTLS_V10, *basic_creds, policy);
+   errors += test_dtls_handshake(rng, TLS::Protocol_Version::DTLS_V12, *basic_creds, policy);
+
+   policy.set("key_exchange_methods", "DH");
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V10, *basic_creds, policy);
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V11, *basic_creds, policy);
+   policy.set("key_exchange_methods", "ECDH");
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V12, *basic_creds, policy);
+   errors += test_dtls_handshake(rng, TLS::Protocol_Version::DTLS_V10, *basic_creds, policy);
+   errors += test_dtls_handshake(rng, TLS::Protocol_Version::DTLS_V12, *basic_creds, policy);
+
+   policy.set("ciphers", "AES-128");
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V10, *basic_creds, policy);
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V11, *basic_creds, policy);
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V12, *basic_creds, policy);
+   errors += test_dtls_handshake(rng, TLS::Protocol_Version::DTLS_V10, *basic_creds, policy);
+   errors += test_dtls_handshake(rng, TLS::Protocol_Version::DTLS_V12, *basic_creds, policy);
+
+   policy.set("ciphers", "ChaCha20Poly1305");
+   errors += test_tls_handshake(rng, TLS::Protocol_Version::TLS_V12, *basic_creds, policy);
+   errors += test_dtls_handshake(rng, TLS::Protocol_Version::DTLS_V12, *basic_creds, policy);
+
+   test_report("TLS", 22, errors);
 
    return errors;
    }