Implement SSL server socket over OpenSSL.

crypto/openssl_util.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CRYPTO_OPENSSL_UTIL_H_
 #define CRYPTO_OPENSSL_UTIL_H_
 
 #include "base/basictypes.h"
 #include "base/location.h"
 #include "crypto/crypto_export.h"
@@ skipping 64 matching lines @@
   size_t output_len_;
 
   // Temporary buffer writen into in the case where the caller's
   // buffer is not of sufficient size.
   unsigned char min_sized_buffer_[MIN_SIZE];
 
   DISALLOW_COPY_AND_ASSIGN(ScopedOpenSSLSafeSizeBuffer);
 };
 
 // Initialize OpenSSL if it isn't already initialized. This must be called
-// before any other OpenSSL functions.
+// before any other OpenSSL functions though it is safe and cheap to called this

[wtc, 2014/05/16 19:36:14]

Nit: called => call

[byungchul, 2014/05/16 19:50:32]

Done.

+// multiple times.
 // This function is thread-safe, and OpenSSL will only ever be initialized once.
 // OpenSSL will be properly shut down on program exit.
 void CRYPTO_EXPORT EnsureOpenSSLInit();
 
 // Drains the OpenSSL ERR_get_error stack. On a debug build the error codes
 // are send to VLOG(1), on a release build they are disregarded. In most
 // cases you should pass FROM_HERE as the |location|.
 void CRYPTO_EXPORT ClearOpenSSLERRStack(
     const tracked_objects::Location& location);
 
@@ skipping 14 matching lines @@
 
  private:
   const tracked_objects::Location location_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(OpenSSLErrStackTracer);
 };
 
 }  // namespace crypto
 
 #endif  // CRYPTO_OPENSSL_UTIL_H_