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Light Client: fetch transactions/receipts by transaction hash (#6641)

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* rpc: transaction/receipt requests made async

* rpc: light client fetches transaction and uncle by hash/index

* on_demand: request type for transaction index

* serve transaction index requests in light protocol

* add a test for transaction index serving

* fetch transaction and receipts by hash on light client

* fix decoding tests

* light: more lenient cost table parsing (backwards compatible)

* fix tests and warnings

* LES -> PIP

* Update provider.rs

* proper doc comments for public functions
This commit is contained in:
Robert Habermeier
2017-10-08 18:19:27 +02:00
committed by Gav Wood
parent 360ecd3728
commit b010fb5004
15 changed files with 462 additions and 114 deletions
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10
ethcore/light/src/net/mod.rs
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@@ -430,7 +430,11 @@ impl LightProtocol {
// compute and deduct cost.
let pre_creds = creds.current();
let cost = params.compute_cost_multi(requests.requests());
let cost = match params.compute_cost_multi(requests.requests()) {
Some(cost) => cost,
None => return Err(Error::NotServer),
};
creds.deduct_cost(cost)?;
trace!(target: "pip", "requesting from peer {}. Cost: {}; Available: {}",
@@ -924,7 +928,7 @@ impl LightProtocol {
peer.local_credits.deduct_cost(peer.local_flow.base_cost())?;
for request_rlp in raw.at(1)?.iter().take(MAX_REQUESTS) {
let request: Request = request_rlp.as_val()?;
let cost = peer.local_flow.compute_cost(&request);
let cost = peer.local_flow.compute_cost(&request).ok_or(Error::NotServer)?;
peer.local_credits.deduct_cost(cost)?;
request_builder.push(request).map_err(|_| Error::BadBackReference)?;
}
@@ -939,7 +943,7 @@ impl LightProtocol {
match complete_req {
CompleteRequest::Headers(req) => self.provider.block_headers(req).map(Response::Headers),
CompleteRequest::HeaderProof(req) => self.provider.header_proof(req).map(Response::HeaderProof),
CompleteRequest::TransactionIndex(_) => None, // don't answer these yet, but leave them in protocol.
CompleteRequest::TransactionIndex(req) => self.provider.transaction_index(req).map(Response::TransactionIndex),
CompleteRequest::Body(req) => self.provider.block_body(req).map(Response::Body),
CompleteRequest::Receipts(req) => self.provider.block_receipts(req).map(Response::Receipts),
CompleteRequest::Account(req) => self.provider.account_proof(req).map(Response::Account),