void Connection::PendingWriteSsl::flush() {
if (!is_flushed_ && !buffers_.empty()) {
SslSession* ssl_session = connection_->ssl_session_.get();
uv_bufs_.reserve(buffers_.size());
for (BufferVec::const_iterator it = buffers_.begin(),
end = buffers_.end(); it != end; ++it) {
uv_bufs_.push_back(uv_buf_init(const_cast<char*>(it->data()), it->size()));
}
rb::RingBuffer::Position prev_pos = ssl_session->outgoing().write_position();
encrypt();
FixedVector<uv_buf_t, SSL_ENCRYPTED_BUFS_COUNT> bufs;
encrypted_size_ = ssl_session->outgoing().peek_multiple(prev_pos, &bufs);
LOG_TRACE("Sending %u encrypted bytes", static_cast<unsigned int>(encrypted_size_));
uv_stream_t* sock_stream = copy_cast<uv_tcp_t*, uv_stream_t*>(&connection_->socket_);
uv_write(&req_, sock_stream, bufs.data(), bufs.size(), PendingWriteSsl::on_write);
is_flushed_ = true;
}
}
void Collection::encode_items_uint16(char* buf) const {
for (BufferVec::const_iterator i = items_.begin(),
end = items_.end(); i != end; ++i) {
encode_uint16(buf, i->size());
buf += sizeof(uint16_t);
memcpy(buf, i->data(), i->size());
buf += i->size();
}
}
void Tuple::encode_buffers(size_t pos, Buffer* buf) const {
for (BufferVec::const_iterator i = items_.begin(),
end = items_.end(); i != end; ++i) {
if (i->size() != 0) {
pos = buf->copy(pos, i->data(), i->size());
} else {
pos = buf->encode_int32(pos, -1); // null
}
}
}
void BufferCollection::encode(int version, char* buf) const {
assert(version == 1 || version == 2);
char* pos = buf;
for (BufferVec::const_iterator it = bufs_.begin(),
end = bufs_.end(); it != end; ++it) {
encode_uint16(pos, it->size());
pos += sizeof(uint16_t);
memcpy(pos, it->data(), it->size());
pos += it->size();
}
}
void Connection::PendingWriteSsl::encrypt() {
char buf[SSL_WRITE_SIZE];
size_t copied = 0;
size_t offset = 0;
size_t total = 0;
SslSession* ssl_session = connection_->ssl_session_.get();
BufferVec::const_iterator it = buffers_.begin(),
end = buffers_.end();
LOG_TRACE("Copying %u bufs", static_cast<unsigned int>(buffers_.size()));
bool is_done = (it == end);
while (!is_done) {
assert(it->size() > 0);
size_t size = it->size();
size_t to_copy = size - offset;
size_t available = SSL_WRITE_SIZE - copied;
if (available < to_copy) {
to_copy = available;
}
memcpy(buf + copied, it->data() + offset, to_copy);
copied += to_copy;
offset += to_copy;
total += to_copy;
if (offset == size) {
++it;
offset = 0;
}
is_done = (it == end);
if (is_done || copied == SSL_WRITE_SIZE) {
int rc = ssl_session->encrypt(buf, copied);
if (rc <= 0 && ssl_session->has_error()) {
connection_->notify_error("Unable to encrypt data: " + ssl_session->error_message(), CONNECTION_ERROR_SSL);
return;
}
copied = 0;
}
}
LOG_TRACE("Copied %u bytes for encryption", static_cast<unsigned int>(total));
}
void Connection::PendingWrite::flush() {
if (!is_flushed_ && !buffers_.empty()) {
UvBufVec bufs;
bufs.reserve(buffers_.size());
for (BufferVec::const_iterator it = buffers_.begin(),
end = buffers_.end(); it != end; ++it) {
bufs.push_back(uv_buf_init(const_cast<char*>(it->data()), it->size()));
}
is_flushed_ = true;
uv_stream_t* sock_stream = copy_cast<uv_tcp_t*, uv_stream_t*>(&connection_->socket_);
uv_write(&req_, sock_stream, bufs.data(), bufs.size(), PendingWrite::on_write);
}
}