all: fix typos in comments (#21118)

eth/downloader/downloader.go

@@ -724,7 +724,7 @@ func (d *Downloader) findAncestor(p *peerConnection, remoteHeader *types.Header)
 	// If we're doing a light sync, ensure the floor doesn't go below the CHT, as
 	// all headers before that point will be missing.
 	if d.mode == LightSync {
-		// If we dont know the current CHT position, find it
+		// If we don't know the current CHT position, find it
 		if d.genesis == 0 {
 			header := d.lightchain.CurrentHeader()
 			for header != nil {
@@ -1182,7 +1182,7 @@ func (d *Downloader) fetchReceipts(from uint64) error {
 //  - capacity:    network callback to retrieve the estimated type-specific bandwidth capacity of a peer (traffic shaping)
 //  - idle:        network callback to retrieve the currently (type specific) idle peers that can be assigned tasks
 //  - setIdle:     network callback to set a peer back to idle and update its estimated capacity (traffic shaping)
-//  - kind:        textual label of the type being downloaded to display in log mesages
+//  - kind:        textual label of the type being downloaded to display in log messages
 func (d *Downloader) fetchParts(deliveryCh chan dataPack, deliver func(dataPack) (int, error), wakeCh chan bool,
 	expire func() map[string]int, pending func() int, inFlight func() bool, throttle func() bool, reserve func(*peerConnection, int) (*fetchRequest, bool, error),
 	fetchHook func([]*types.Header), fetch func(*peerConnection, *fetchRequest) error, cancel func(*fetchRequest), capacity func(*peerConnection) int,

eth/downloader/downloader_test.go

@@ -1069,7 +1069,7 @@ func testInvalidHeaderRollback(t *testing.T, protocol int, mode SyncMode) {
 	}
 }
 
-// Tests that a peer advertising an high TD doesn't get to stall the downloader
+// Tests that a peer advertising a high TD doesn't get to stall the downloader
 // afterwards by not sending any useful hashes.
 func TestHighTDStarvationAttack62(t *testing.T)      { testHighTDStarvationAttack(t, 62, FullSync) }
 func TestHighTDStarvationAttack63Full(t *testing.T)  { testHighTDStarvationAttack(t, 63, FullSync) }

eth/downloader/peer.go

@@ -155,7 +155,7 @@ func (p *peerConnection) FetchHeaders(from uint64, count int) error {
 	}
 	p.headerStarted = time.Now()
 
-	// Issue the header retrieval request (absolut upwards without gaps)
+	// Issue the header retrieval request (absolute upwards without gaps)
 	go p.peer.RequestHeadersByNumber(from, count, 0, false)
 
 	return nil

eth/fetcher/tx_fetcher.go

@@ -515,7 +515,7 @@ func (f *TxFetcher) loop() {
 			// Schedule a new transaction retrieval
 			f.scheduleFetches(timeoutTimer, timeoutTrigger, nil)
 
-			// No idea if we sheduled something or not, trigger the timer if needed
+			// No idea if we scheduled something or not, trigger the timer if needed
 			// TODO(karalabe): this is kind of lame, can't we dump it into scheduleFetches somehow?
 			f.rescheduleTimeout(timeoutTimer, timeoutTrigger)
 

eth/fetcher/tx_fetcher_test.go

@@ -30,7 +30,7 @@ import (
 )
 
 var (
-	// testTxs is a set of transactions to use during testing that have meaninful hashes.
+	// testTxs is a set of transactions to use during testing that have meaningful hashes.
 	testTxs = []*types.Transaction{
 		types.NewTransaction(5577006791947779410, common.Address{0x0f}, new(big.Int), 0, new(big.Int), nil),
 		types.NewTransaction(15352856648520921629, common.Address{0xbb}, new(big.Int), 0, new(big.Int), nil),
@@ -449,7 +449,7 @@ func TestTransactionFetcherCleanupEmpty(t *testing.T) {
 	})
 }
 
-// Tests that non-returned transactions are either re-sheduled from a
+// Tests that non-returned transactions are either re-scheduled from a
 // different peer, or self if they are after the cutoff point.
 func TestTransactionFetcherMissingRescheduling(t *testing.T) {
 	testTransactionFetcherParallel(t, txFetcherTest{

eth/sync.go

@@ -237,7 +237,7 @@ func (cs *chainSyncer) nextSyncOp() *chainSyncOp {
 		return nil // Sync already running.
 	}
 
-	// Ensure we're at mininum peer count.
+	// Ensure we're at minimum peer count.
 	minPeers := defaultMinSyncPeers
 	if cs.forced {
 		minPeers = 1