70 lines
2.9 KiB
Go
70 lines
2.9 KiB
Go
// Copyright 2017-2021 DERO Project. All rights reserved.
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// Use of this source code in any form is governed by RESEARCH license.
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// license can be found in the LICENSE file.
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// GPG: 0F39 E425 8C65 3947 702A 8234 08B2 0360 A03A 9DE8
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//
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package p2p
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import "github.com/romana/rlog"
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// peer has requested some objects, we must respond
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// if certain object is not in our list we respond with empty buffer for that slot
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// an object is either a block or a tx
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func (connection *Connection) GetObject(request ObjectList, response *Objects) error {
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var err error
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if len(request.Block_list) < 1 && len(request.Tx_list) < 1 { // we are expecting 1 block or 1 tx
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rlog.Warnf("malformed object request received, banning peer %+v %s", request)
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connection.exit()
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return nil
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}
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connection.update(&request.Common) // update common information
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for i := range request.Block_list { // find the block
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var cbl Complete_Block
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bl, err := chain.Load_BL_FROM_ID(request.Block_list[i])
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if err != nil{
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return err
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}
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cbl.Block = bl.Serialize()
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for j := range bl.Tx_hashes {
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var tx_bytes []byte
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if tx_bytes, err = chain.Store.Block_tx_store.ReadTX(bl.Tx_hashes[j]); err != nil {
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return err
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}
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cbl.Txs = append(cbl.Txs, tx_bytes) // append all the txs
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}
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response.CBlocks = append(response.CBlocks, cbl)
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}
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for i := range request.Tx_list { // find the common point in our chain
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var tx_bytes []byte
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if tx := chain.Mempool.Mempool_Get_TX(request.Tx_list[i]); tx != nil { // if tx can be satisfied from pool, so be it
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tx_bytes = tx.Serialize()
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} else if tx := chain.Regpool.Regpool_Get_TX(request.Tx_list[i]); tx != nil { // if tx can be satisfied from regpool, so be it
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tx_bytes = tx.Serialize()
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} else if tx_bytes, err = chain.Store.Block_tx_store.ReadTX(request.Tx_list[i]); err != nil {
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return err
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}
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response.Txs = append(response.Txs, tx_bytes) // append all the txs
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}
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// if everything is OK, we must respond with object response
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fill_common(&response.Common) // fill common info
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//rlog.Tracef(3, "OBJECT RESPONSE SENT sent size %d %s", len(serialized), connection.logid)
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return nil
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}
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