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// Copyright (c) 2020-2021 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <compat.h>
#include <logging.h>
#include <tinyformat.h>
#include <util/sock.h>
#include <codecvt>
#include <cwchar>
#include <locale>
#include <string>
#ifdef WIN32
std::string NetworkErrorString(int err)
{
wchar_t buf[256];
buf[0] = 0;
if(FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_MAX_WIDTH_MASK,
nullptr, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
buf, ARRAYSIZE(buf), nullptr))
{
return strprintf("%s (%d)", std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>,wchar_t>().to_bytes(buf), err);
}
else
{
return strprintf("Unknown error (%d)", err);
}
}
#else
std::string NetworkErrorString(int err)
{
char buf[256];
buf[0] = 0;
/* Too bad there are two incompatible implementations of the
* thread-safe strerror. */
const char *s;
#ifdef STRERROR_R_CHAR_P /* GNU variant can return a pointer outside the passed buffer */
s = strerror_r(err, buf, sizeof(buf));
#else /* POSIX variant always returns message in buffer */
s = buf;
if (strerror_r(err, buf, sizeof(buf)))
buf[0] = 0;
#endif
return strprintf("%s (%d)", s, err);
}
#endif
bool CloseSocket(SOCKET& hSocket)
{
if (hSocket == INVALID_SOCKET)
return false;
#ifdef WIN32
int ret = closesocket(hSocket);
#else
int ret = close(hSocket);
#endif
if (ret) {
LogPrintf("Socket close failed: %d. Error: %s\n", hSocket, NetworkErrorString(WSAGetLastError()));
}
hSocket = INVALID_SOCKET;
return ret != SOCKET_ERROR;
}
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