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/*
* OS specific utility functions
* (C) 2015,2016,2017 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_SOCKET_H_
#define BOTAN_SOCKET_H_
#include <botan/types.h>
#include <functional>
namespace Botan {
namespace OS {
/*
* This header is internal (not installed) and these functions are not
* intended to be called by applications. However they are given public
* visibility (using BOTAN_TEST_API macro) for the tests. This also probably
* allows them to be overridden by the application on ELF systems, but
* this hasn't been tested.
*/
/**
* A wrapper around a simple blocking TCP socket
*/
class BOTAN_TEST_API Socket
{
public:
/**
* The socket will be closed upon destruction
*/
virtual ~Socket() {};
/**
* Write to the socket. Blocks until all bytes sent.
* Throws on error.
*/
virtual void write(const uint8_t buf[], size_t len) = 0;
/**
* Reads up to len bytes, returns bytes written to buf.
* Returns 0 on EOF. Throws on error.
*/
virtual size_t read(uint8_t buf[], size_t len) = 0;
};
/**
* Open up a socket. Will throw on error. Returns null if sockets are
* not available on this platform.
*/
std::unique_ptr<Socket>
BOTAN_TEST_API open_socket(const std::string& hostname,
const std::string& service);
} // OS
} // Botan
#endif
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