Basic Dandelion transaction routing (#719)

* Initial Dandelion Commit
* Changed stem_tx_pool to tx_stempool
* Introduction of stem memory pool and stem pool config
* Pool push now send to stem memory pool
* Add stem transaction functions
* Add stem transaction pool
* Drastically simplified code structure
* Add monitor transactions
* Add Dandelion monitor and remove transactions from stempool
* Add peer relay monitor
* Reconcile block with stempool
* Fix total size bug
* Add fluff option for pool push
* Added details on dandelion monitor
* Fix issue with missing parent
* Child transaction with stempool parent are now forced stem
* Update Dandelion Relay from outgoing peers
* Fix missing pool reconciliation
* Add the ability to fluff a transaction directly
* Fix tests for Dandelion
* Missing send_stem_transaction method...
* Add fluff handler for wallet
* Add logger when successfully updated Dandelion relay
* Launch transaction monitor last
* Fix dandelion relay misplaced
* Add logging and updating for stempool
* Additionnal check for stem transaction
* Fix 2 Locks in a row

src/bin/grin.rs

@@ -266,7 +266,11 @@ fn main() {
 				.help("Send the transaction to the provided server")
 				.short("d")
 				.long("dest")
-				.takes_value(true)))
+				.takes_value(true))
+			.arg(Arg::with_name("fluff")
+				.help("Fluff the transaction (ignore Dandelion relay protocol)")
+				.short("f")
+				.long("fluff")))
 
 		.subcommand(SubCommand::with_name("burn")
 			.about("** TESTING ONLY ** Burns the provided amount to a known \
@@ -543,6 +547,10 @@ fn wallet_command(wallet_args: &ArgMatches, global_config: GlobalConfig) {
 			let dest = send_args
 				.value_of("dest")
 				.expect("Destination wallet address required");
+			let mut fluff = false;
+			if send_args.is_present("fluff") {
+				fluff = true;
+			}
 			let max_outputs = 500;
 			let result = wallet::issue_send_tx(
 				&wallet_config,
@@ -552,6 +560,7 @@ fn wallet_command(wallet_args: &ArgMatches, global_config: GlobalConfig) {
 				dest.to_string(),
 				max_outputs,
 				selection_strategy == "all",
+				fluff,
 			);
 			match result {
 				Ok(_) => info!(