Sint32 Socket::write(SocketHandle socket, const void* ptr, Uint32 size)
{
#ifdef PEGASUS_OS_TYPE_WINDOWS
return ::send(socket, (const char*)ptr, size, 0);
#else
int status;
PEGASUS_RETRY_SYSTEM_CALL(::write(socket, (char*)ptr, size), status);
return status;
#endif
}
void Socket::close(SocketHandle& socket)
{
if (socket != PEGASUS_INVALID_SOCKET)
{
#ifdef PEGASUS_OS_TYPE_WINDOWS
if (!closesocket(socket))
{
socket = PEGASUS_INVALID_SOCKET;
}
#else
int status;
PEGASUS_RETRY_SYSTEM_CALL(::close(socket), status);
if (status == 0)
{
socket = PEGASUS_INVALID_SOCKET;
}
#endif
}
}
Boolean Socket::timedConnect(
SocketHandle socket,
sockaddr* address,
int addressLength,
Uint32 timeoutMilliseconds)
{
int connectResult;
#ifdef PEGASUS_OS_TYPE_WINDOWS
connectResult = ::connect(socket, address, addressLength);
#else
Boolean connectionAlreadyRefused = false;
Uint32 maxConnectAttempts = 100;
// Retry the connect() until it succeeds or it fails with an error other
// than EINTR, EAGAIN (for Linux), or the first ECONNREFUSED (for HP-UX).
while (((connectResult = ::connect(socket, address, addressLength)) == -1)
&& (maxConnectAttempts-- > 0)
&& ((errno == EINTR) || (errno == EAGAIN) ||
((errno == ECONNREFUSED) && !connectionAlreadyRefused)))
{
if (errno == ECONNREFUSED)
{
connectionAlreadyRefused = true;
}
Threads::sleep(1);
}
#endif
if (connectResult == 0)
{
return true;
}
if (getSocketError() == PEGASUS_NETWORK_EINPROGRESS)
{
PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,
"Connection to server in progress. Waiting up to %u milliseconds "
"for the socket to become connected.",
timeoutMilliseconds));
fd_set fdwrite;
FD_ZERO(&fdwrite);
FD_SET(socket, &fdwrite);
struct timeval timeoutValue =
{ timeoutMilliseconds/1000, timeoutMilliseconds%1000*1000 };
int selectResult = -1;
#ifdef PEGASUS_OS_TYPE_WINDOWS
PEGASUS_RETRY_SYSTEM_CALL(
select(FD_SETSIZE, NULL, &fdwrite, &fdwrite, &timeoutValue),
selectResult);
#else
PEGASUS_RETRY_SYSTEM_CALL(
select(FD_SETSIZE, NULL, &fdwrite, NULL, &timeoutValue),
selectResult);
#endif
if (selectResult == 0)
{
PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL1,
"select() timed out waiting for the socket connection to be "
"established.");
return false;
}
else if (selectResult > 0)
{
int optval;
SocketLength optlen = sizeof(int);
getsockopt(socket, SOL_SOCKET, SO_ERROR, (char*)&optval, &optlen);
if (optval == 0)
{
PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL4,
"Connection with server established.");
return true;
}
else
{
PEG_TRACE((TRC_HTTP, Tracer::LEVEL1,
"Did not connect, getsockopt() returned optval = %d",
optval));
return false;
}
}
else
{
PEG_TRACE((TRC_HTTP, Tracer::LEVEL1,
"select() returned error code %d",
getSocketError()));
return false;
}
}
PEG_TRACE((TRC_HTTP, Tracer::LEVEL1,
"connect() returned error code %d",
getSocketError()));
return false;
}
Sint32 Socket::timedWrite(
SocketHandle socket,
const void* ptr,
Uint32 size,
Uint32 socketWriteTimeout)
{
Sint32 bytesWritten = 0;
Sint32 totalBytesWritten = 0;
Boolean socketTimedOut = false;
int selreturn = 0;
while (1)
{
#ifdef PEGASUS_OS_TYPE_WINDOWS
PEGASUS_RETRY_SYSTEM_CALL(
::send(socket, (const char*)ptr, size, 0), bytesWritten);
#else
PEGASUS_RETRY_SYSTEM_CALL(
::write(socket, (char*)ptr, size), bytesWritten);
#endif
// Some data written this cycle ?
// Add it to the total amount of written data.
if (bytesWritten > 0)
{
totalBytesWritten += bytesWritten;
socketTimedOut = false;
}
// All data written ? return amount of data written
if ((Uint32)bytesWritten == size)
{
return totalBytesWritten;
}
// If data has been written partially, we resume writing data
// this also accounts for the case of a signal interrupt
// (i.e. errno = EINTR)
if (bytesWritten > 0)
{
size -= bytesWritten;
ptr = (void *)((char *)ptr + bytesWritten);
continue;
}
// Something went wrong
if (bytesWritten == PEGASUS_SOCKET_ERROR)
{
// if we already waited for the socket to get ready, bail out
if (socketTimedOut) return bytesWritten;
#ifdef PEGASUS_OS_TYPE_WINDOWS
if (WSAGetLastError() == WSAEWOULDBLOCK)
#else
if (errno == EAGAIN || errno == EWOULDBLOCK)
#endif
{
fd_set fdwrite;
// max. timeout seconds waiting for the socket to get ready
struct timeval tv = { socketWriteTimeout, 0 };
FD_ZERO(&fdwrite);
FD_SET(socket, &fdwrite);
selreturn = select(FD_SETSIZE, NULL, &fdwrite, NULL, &tv);
if (selreturn == 0) socketTimedOut = true; // ran out of time
continue;
}
return bytesWritten;
}
}
}
Sint32 SSLSocket::connect(Uint32 timeoutMilliseconds)
{
PEG_METHOD_ENTER(TRC_SSL, "SSLSocket::connect()");
PEG_TRACE((TRC_SSL, Tracer::LEVEL4,
"Connection timeout in milliseconds is : %d", timeoutMilliseconds));
SSL* sslConnection = static_cast<SSL*>(_SSLConnection);
SSL_set_connect_state(sslConnection);
while (1)
{
int ssl_rc = SSL_connect(sslConnection);
if (ssl_rc > 0)
{
// Connected!
break;
}
if (ssl_rc == 0)
{
PEG_TRACE((
TRC_SSL,
Tracer::LEVEL1,
"---> SSL: Shutdown SSL_connect() failed. Error string: %s",
ERR_error_string(ssl_rc, NULL)));
PEG_METHOD_EXIT();
return -1;
}
// Error case: ssl_rc < 0
int ssl_rsn = SSL_get_error(sslConnection, ssl_rc);
if ((ssl_rsn == SSL_ERROR_SYSCALL) &&
((errno == EAGAIN) || (errno == EINTR)))
{
// Temporary error; retry the SSL_connect()
continue;
}
if ((ssl_rsn != SSL_ERROR_WANT_READ) &&
(ssl_rsn != SSL_ERROR_WANT_WRITE))
{
// Error, connection failed
if (Tracer::isTraceOn())
{
unsigned long rc = ERR_get_error ();
char buff[256];
// added in OpenSSL 0.9.6:
ERR_error_string_n(rc, buff, sizeof(buff));
PEG_TRACE((TRC_DISCARDED_DATA, Tracer::LEVEL1,
"---> SSL: Not connected %d %s", ssl_rsn, buff));
}
PEG_METHOD_EXIT();
return -1;
}
// Wait until the socket is ready for reading or writing (as
// appropriate) and then retry the SSL_connect()
fd_set fd;
FD_ZERO(&fd);
FD_SET(_socket, &fd);
struct timeval timeoutValue =
{ timeoutMilliseconds/1000, timeoutMilliseconds%1000*1000 };
int selectResult = -1;
if (ssl_rsn == SSL_ERROR_WANT_READ)
{
PEG_TRACE_CSTRING(TRC_SSL, Tracer::LEVEL4,
"---> SSL: Retry WANT_READ");
PEGASUS_RETRY_SYSTEM_CALL(
select(FD_SETSIZE, &fd, NULL, NULL, &timeoutValue),
selectResult);
}
else // (ssl_rsn == SSL_ERROR_WANT_WRITE)
{
PEGASUS_ASSERT(ssl_rsn == SSL_ERROR_WANT_WRITE);
PEG_TRACE_CSTRING(TRC_SSL, Tracer::LEVEL4,
"---> SSL: Retry WANT_WRITE");
PEGASUS_RETRY_SYSTEM_CALL(
select(FD_SETSIZE, NULL, &fd, NULL, &timeoutValue),
selectResult);
}
// Check the result of select.
if (selectResult == 0)
{
PEG_TRACE_CSTRING(TRC_DISCARDED_DATA, Tracer::LEVEL1,
"---> SSL: Failed to connect, connection timed out.");
PEG_METHOD_EXIT();
return -1;
}
else if (selectResult == PEGASUS_SOCKET_ERROR)
{
PEG_TRACE((TRC_DISCARDED_DATA, Tracer::LEVEL1,
"---> SSL: Failed to connect, select error, return code = %d",
selectResult));
PEG_METHOD_EXIT();
return -1;
}
// else retry the SSL_connect()
}
PEG_TRACE_CSTRING(TRC_SSL, Tracer::LEVEL3, "---> SSL: Connected");
if (_SSLContext->isPeerVerificationEnabled())
{
PEG_TRACE_CSTRING(TRC_SSL, Tracer::LEVEL4,
"Attempting to verify server certificate.");
X509* server_cert = SSL_get_peer_certificate(sslConnection);
if (server_cert != NULL)
{
//
// Do not check the verification result using
// SSL_get_verify_result here to see whether or not to continue.
// The prepareForCallback does not reset the verification result,
// so it will still contain the original error. If the client
// chose to override the default error in the callback and
// return true, we got here and should proceed with the
// transaction. Otherwise, the handshake was already terminated.
//
if (SSL_get_verify_result(sslConnection) == X509_V_OK)
{
PEG_TRACE_CSTRING(TRC_SSL, Tracer::LEVEL4,
"--->SSL: Server Certificate verified.");
}
else
{
PEG_TRACE_CSTRING(TRC_SSL, Tracer::LEVEL4,
"--->SSL: Server Certificate not verified, but the "
"callback overrode the default error.");
}
X509_free (server_cert);
}
else
{
PEG_TRACE_CSTRING(TRC_SSL, Tracer::LEVEL1,
"-->SSL: Server not certified, no certificate received.");
PEG_METHOD_EXIT();
return -1;
}
}
else
{
PEG_TRACE_CSTRING(TRC_SSL, Tracer::LEVEL4,
"---> SSL: Server certification disabled");
}
PEG_METHOD_EXIT();
return 1;
}