feat: add IPFS rate limiter for downloading stickers and use http server for retrieving stickers (#2611)

VERSION

@@ -1 +1 @@
-0.98.5
+0.98.6

api/geth_backend.go

@@ -690,11 +690,11 @@ func (b *GethStatusBackend) loadNodeConfig(inputNodeCfg *params.NodeConfig) erro
 
 	// Start WakuV1 if WakuV2 is not enabled
 	conf.WakuConfig.Enabled = !conf.WakuV2Config.Enabled
-
 	// NodeConfig.Version should be taken from params.Version
 	// which is set at the compile time.
 	// What's cached is usually outdated so we overwrite it here.
 	conf.Version = params.Version
+	conf.RootDataDir = b.rootDataDir
 	conf.DataDir = filepath.Join(b.rootDataDir, conf.DataDir)
 	conf.ShhextConfig.BackupDisabledDataDir = filepath.Join(b.rootDataDir, conf.ShhextConfig.BackupDisabledDataDir)
 	if len(conf.LogDir) == 0 {
@@ -1193,7 +1193,7 @@ func (b *GethStatusBackend) injectAccountsIntoWakuService(w types.WakuKeyManager
 	}
 
 	if st != nil {
-		if err := st.InitProtocol(b.statusNode.GethNode().Config().Name, identity, b.appDB, b.multiaccountsDB, acc, logutils.ZapLogger()); err != nil {
+		if err := st.InitProtocol(b.statusNode.GethNode().Config().Name, identity, b.appDB, b.statusNode.HTTPServer(), b.multiaccountsDB, acc, logutils.ZapLogger()); err != nil {
 			return err
 		}
 		// Set initial connection state

appdatabase/migrations/bindata.go

@@ -360,7 +360,7 @@ func _1649164719_add_community_archives_info_tableUpSql() (*asset, error) {
 		return nil, err
 	}
 
-	info := bindataFileInfo{name: "1649164719_add_community_archives_info_table.up.sql", size: 208, mode: os.FileMode(0664), modTime: time.Unix(1649593899, 0)}
+	info := bindataFileInfo{name: "1649164719_add_community_archives_info_table.up.sql", size: 208, mode: os.FileMode(0664), modTime: time.Unix(1652098406, 0)}
 	a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xd1, 0x4f, 0x80, 0x45, 0xb9, 0xd9, 0x15, 0xe2, 0x78, 0xd0, 0xcb, 0x71, 0xc1, 0x1b, 0xb7, 0x1b, 0x1b, 0x97, 0xfe, 0x47, 0x53, 0x3c, 0x62, 0xbc, 0xdd, 0x3a, 0x94, 0x1a, 0xc, 0x48, 0x76, 0xe}}
 	return a, nil
 }
@@ -380,7 +380,7 @@ func _1649174829_add_visitble_tokenUpSql() (*asset, error) {
 		return nil, err
 	}
 
-	info := bindataFileInfo{name: "1649174829_add_visitble_token.up.sql", size: 84, mode: os.FileMode(0664), modTime: time.Unix(1649882240, 0)}
+	info := bindataFileInfo{name: "1649174829_add_visitble_token.up.sql", size: 84, mode: os.FileMode(0664), modTime: time.Unix(1652098406, 0)}
 	a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xa3, 0x22, 0xc0, 0x2b, 0x3f, 0x4f, 0x3d, 0x5e, 0x4c, 0x68, 0x7c, 0xd0, 0x15, 0x36, 0x9f, 0xec, 0xa1, 0x2a, 0x7b, 0xb4, 0xe3, 0xc6, 0xc9, 0xb4, 0x81, 0x50, 0x4a, 0x11, 0x3b, 0x35, 0x7, 0xcf}}
 	return a, nil
 }
@@ -400,7 +400,7 @@ func _1649882262_add_derived_from_accountsUpSql() (*asset, error) {
 		return nil, err
 	}
 
-	info := bindataFileInfo{name: "1649882262_add_derived_from_accounts.up.sql", size: 110, mode: os.FileMode(0664), modTime: time.Unix(1649882324, 0)}
+	info := bindataFileInfo{name: "1649882262_add_derived_from_accounts.up.sql", size: 110, mode: os.FileMode(0664), modTime: time.Unix(1652098406, 0)}
 	a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x11, 0xb9, 0x44, 0x4d, 0x85, 0x8d, 0x7f, 0xb4, 0xae, 0x4f, 0x5c, 0x66, 0x64, 0xb6, 0xe2, 0xe, 0x3d, 0xad, 0x9d, 0x8, 0x4f, 0xab, 0x6e, 0xa8, 0x7d, 0x76, 0x3, 0xad, 0x96, 0x1, 0xee, 0x5c}}
 	return a, nil
 }

ipfs/ipfs.go

@@ -0,0 +1,236 @@
+package ipfs
+
+import (
+	"errors"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path/filepath"
+	"sync"
+	"time"
+
+	"github.com/ipfs/go-cid"
+	"github.com/multiformats/go-multibase"
+	"github.com/wealdtech/go-multicodec"
+
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/log"
+)
+
+const infuraAPIURL = "https://ipfs.infura.io:5001/api/v0/cat?arg="
+const maxRequestsPerSecond = 3
+
+type taskResponse struct {
+	err      error
+	response []byte
+}
+
+type taskRequest struct {
+	cid      string
+	download bool
+	doneChan chan taskResponse
+}
+
+type Downloader struct {
+	ipfsDir         string
+	wg              sync.WaitGroup
+	rateLimiterChan chan taskRequest
+	inputTaskChan   chan taskRequest
+	client          *http.Client
+
+	quit chan struct{}
+}
+
+func NewDownloader(rootDir string) *Downloader {
+	ipfsDir := filepath.Clean(filepath.Join(rootDir, "./ipfs"))
+	if err := os.MkdirAll(ipfsDir, 0700); err != nil {
+		panic("could not create IPFSDir")
+	}
+
+	d := &Downloader{
+		ipfsDir:         ipfsDir,
+		rateLimiterChan: make(chan taskRequest, maxRequestsPerSecond),
+		inputTaskChan:   make(chan taskRequest, 1000),
+		wg:              sync.WaitGroup{},
+		client: &http.Client{
+			Timeout: time.Second * 5,
+		},
+
+		quit: make(chan struct{}, 1),
+	}
+
+	go d.taskDispatcher()
+	go d.worker()
+
+	return d
+}
+
+func (d *Downloader) Stop() {
+	close(d.quit)
+
+	d.wg.Wait()
+
+	close(d.inputTaskChan)
+	close(d.rateLimiterChan)
+}
+
+func (d *Downloader) worker() {
+	for {
+		select {
+		case <-d.quit:
+			return
+		case request := <-d.rateLimiterChan:
+			resp, err := d.download(request.cid, request.download)
+			request.doneChan <- taskResponse{
+				err:      err,
+				response: resp,
+			}
+		}
+	}
+}
+
+func (d *Downloader) taskDispatcher() {
+	ticker := time.NewTicker(time.Second / maxRequestsPerSecond)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-d.quit:
+			return
+		case <-ticker.C:
+			request, ok := <-d.inputTaskChan
+			if !ok {
+				return
+			}
+			d.rateLimiterChan <- request
+
+		}
+	}
+}
+
+func hashToCid(hash []byte) (string, error) {
+	// contract response includes a contenthash, which needs to be decoded to reveal
+	// an IPFS identifier. Once decoded, download the content from IPFS. This content
+	// is in EDN format, ie https://ipfs.infura.io/ipfs/QmWVVLwVKCwkVNjYJrRzQWREVvEk917PhbHYAUhA1gECTM
+	// and it also needs to be decoded in to a nim type
+
+	data, codec, err := multicodec.RemoveCodec(hash)
+	if err != nil {
+		return "", err
+	}
+
+	codecName, err := multicodec.Name(codec)
+	if err != nil {
+		return "", err
+	}
+
+	if codecName != "ipfs-ns" {
+		return "", errors.New("codecName is not ipfs-ns")
+	}
+
+	thisCID, err := cid.Parse(data)
+	if err != nil {
+		return "", err
+	}
+
+	return thisCID.StringOfBase(multibase.Base32)
+}
+
+func decodeStringHash(input string) (string, error) {
+	hash, err := hexutil.Decode("0x" + input)
+	if err != nil {
+		return "", err
+	}
+
+	cid, err := hashToCid(hash)
+	if err != nil {
+		return "", err
+	}
+
+	return cid, nil
+}
+
+// Get checks if an IPFS image exists and returns it from cache
+// otherwise downloads it from INFURA's ipfs gateway
+func (d *Downloader) Get(hash string, download bool) ([]byte, error) {
+	cid, err := decodeStringHash(hash)
+	if err != nil {
+		return nil, err
+	}
+
+	exists, content, err := d.exists(cid)
+	if err != nil {
+		return nil, err
+	}
+	if exists {
+		return content, nil
+	}
+
+	doneChan := make(chan taskResponse, 1)
+
+	d.wg.Add(1)
+
+	d.inputTaskChan <- taskRequest{
+		cid:      cid,
+		download: download,
+		doneChan: doneChan,
+	}
+
+	done := <-doneChan
+	close(doneChan)
+
+	d.wg.Done()
+
+	return done.response, done.err
+}
+
+func (d *Downloader) exists(cid string) (bool, []byte, error) {
+	path := filepath.Join(d.ipfsDir, cid)
+	_, err := os.Stat(path)
+	if err == nil {
+		fileContent, err := os.ReadFile(path)
+		return true, fileContent, err
+	}
+
+	return false, nil, nil
+}
+
+func (d *Downloader) download(cid string, download bool) ([]byte, error) {
+	path := filepath.Join(d.ipfsDir, cid)
+
+	req, err := http.NewRequest(http.MethodPost, infuraAPIURL+cid, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	resp, err := d.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+
+	defer func() {
+		if err := resp.Body.Close(); err != nil {
+			log.Error("failed to close the stickerpack request body", "err", err)
+		}
+	}()
+
+	if resp.StatusCode < 200 || resp.StatusCode > 299 {
+		log.Error("could not load data for", "cid", cid, "code", resp.StatusCode)
+		return nil, errors.New("could not load ipfs data")
+	}
+
+	fileContent, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	if download {
+		// #nosec G306
+		err = os.WriteFile(path, fileContent, 0700)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return fileContent, nil
+}

node/get_status_node.go

@@ -25,10 +25,12 @@ import (
 	"github.com/status-im/status-go/connection"
 	"github.com/status-im/status-go/db"
 	"github.com/status-im/status-go/discovery"
+	"github.com/status-im/status-go/ipfs"
 	"github.com/status-im/status-go/multiaccounts"
 	"github.com/status-im/status-go/params"
 	"github.com/status-im/status-go/peers"
 	"github.com/status-im/status-go/rpc"
+	"github.com/status-im/status-go/server"
 	accountssvc "github.com/status-im/status-go/services/accounts"
 	appmetricsservice "github.com/status-im/status-go/services/appmetrics"
 	"github.com/status-im/status-go/services/browsers"
@@ -78,6 +80,9 @@ type StatusNode struct {
 	gethNode  *node.Node         // reference to Geth P2P stack/node
 	rpcClient *rpc.Client        // reference to an RPC client
 
+	downloader *ipfs.Downloader
+	httpServer *server.Server
+
 	discovery discovery.Discovery
 	register  *peers.Register
 	peerPool  *peers.PeerPool
@@ -145,6 +150,13 @@ func (n *StatusNode) GethNode() *node.Node {
 	return n.gethNode
 }
 
+func (n *StatusNode) HTTPServer() *server.Server {
+	n.mu.RLock()
+	defer n.mu.RUnlock()
+
+	return n.httpServer
+}
+
 // Server retrieves the currently running P2P network layer.
 func (n *StatusNode) Server() *p2p.Server {
 	n.mu.RLock()
@@ -222,6 +234,19 @@ func (n *StatusNode) startWithDB(config *params.NodeConfig, accs *accounts.Manag
 		return err
 	}
 
+	n.downloader = ipfs.NewDownloader(config.RootDataDir)
+
+	httpServer, err := server.NewServer(n.appDB, n.downloader)
+	if err != nil {
+		return err
+	}
+
+	if err := httpServer.Start(); err != nil {
+		return err
+	}
+
+	n.httpServer = httpServer
+
 	if err := n.initServices(config); err != nil {
 		return err
 	}
@@ -399,6 +424,15 @@ func (n *StatusNode) stop() error {
 	n.gethNode = nil
 	n.config = nil
 
+	err := n.httpServer.Stop()
+	if err != nil {
+		return err
+	}
+	n.httpServer = nil
+
+	n.downloader.Stop()
+	n.downloader = nil
+
 	if n.db != nil {
 		err := n.db.Close()
 

node/status_node_services.go

@@ -392,7 +392,7 @@ func (b *StatusNode) ensService() *ens.Service {
 
 func (b *StatusNode) stickersService(accountDB *accounts.Database) *stickers.Service {
 	if b.stickersSrvc == nil {
-		b.stickersSrvc = stickers.NewService(accountDB, b.rpcClient, b.gethAccountManager, b.rpcFiltersSrvc, b.config)
+		b.stickersSrvc = stickers.NewService(accountDB, b.rpcClient, b.gethAccountManager, b.rpcFiltersSrvc, b.config, b.downloader, b.httpServer)
 	}
 	return b.stickersSrvc
 }
@@ -566,8 +566,8 @@ func (b *StatusNode) Cleanup() error {
 			}
 		}
 	}
-	return nil
 
+	return nil
 }
 
 type RPCCall struct {

nodecfg/node_config.go

@@ -325,6 +325,8 @@ func insertClusterConfigNodes(tx *sql.Tx, c *params.NodeConfig) error {
 	return nil
 }
 
+// List of inserts to be executed when upgrading a node
+// These INSERT queries should not be modified
 func nodeConfigUpgradeInserts() []insertFn {
 	return []insertFn{
 		insertNodeConfig,
@@ -346,6 +348,32 @@ func nodeConfigUpgradeInserts() []insertFn {
 	}
 }
 
+func nodeConfigNormalInserts() []insertFn {
+	// WARNING: if you are modifying one of the node config tables
+	// you need to edit `nodeConfigUpgradeInserts` to guarantee that
+	// the selects being used there are not affected.
+
+	return []insertFn{
+		insertNodeConfig,
+		insertHTTPConfig,
+		insertIPCConfig,
+		insertLogConfig,
+		insertUpstreamConfig,
+		insertNetworkConfig,
+		insertClusterConfig,
+		insertClusterConfigNodes,
+		insertLightETHConfig,
+		insertLightETHConfigTrustedNodes,
+		insertRegisterTopics,
+		insertRequireTopics,
+		insertPushNotificationsServerConfig,
+		insertShhExtConfig,
+		insertWakuConfig,
+		insertWakuV2Config,
+		insertTorrentConfig,
+	}
+}
+
 func execInsertFns(inFn []insertFn, tx *sql.Tx, c *params.NodeConfig) error {
 	for _, fn := range inFn {
 		err := fn(tx, c)
@@ -362,10 +390,7 @@ func insertNodeConfigUpgrade(tx *sql.Tx, c *params.NodeConfig) error {
 }
 
 func SaveConfigWithTx(tx *sql.Tx, c *params.NodeConfig) error {
-	insertFNs := append(nodeConfigUpgradeInserts(),
+	insertFNs := nodeConfigNormalInserts()
-		insertTorrentConfig,
-	)
-
 	return execInsertFns(insertFNs, tx, c)
 }
 

params/config.go

@@ -313,6 +313,8 @@ type NodeConfig struct {
 	// NetworkID sets network to use for selecting peers to connect to
 	NetworkID uint64 `json:"NetworkId" validate:"required"`
 
+	RootDataDir string `json:"-"`
+
 	// DataDir is the file system folder the node should use for any data storage needs.
 	DataDir string `validate:"required"`
 

protocol/common/message.go

@@ -137,6 +137,8 @@ type Message struct {
 	ImageLocalURL string `json:"imageLocalUrl,omitempty"`
 	// AudioLocalURL is the local url of the audio
 	AudioLocalURL string `json:"audioLocalUrl,omitempty"`
+	// StickerLocalURL is the local url of the sticker
+	StickerLocalURL string `json:"stickerLocalUrl,omitempty"`
 
 	// CommunityID is the id of the community to advertise
 	CommunityID string `json:"communityId,omitempty"`
@@ -176,12 +178,16 @@ func (m *Message) PrepareServerURLs(port int) {
 	if m.ContentType == protobuf.ChatMessage_AUDIO {
 		m.AudioLocalURL = fmt.Sprintf("https://localhost:%d/messages/audio?messageId=%s", port, m.ID)
 	}
+	if m.ContentType == protobuf.ChatMessage_STICKER {
+		m.StickerLocalURL = fmt.Sprintf("https://localhost:%d/ipfs?hash=%s", port, m.GetSticker().Hash)
+	}
 }
 
 func (m *Message) MarshalJSON() ([]byte, error) {
 	type StickerAlias struct {
 		Hash string `json:"hash"`
 		Pack int32  `json:"pack"`
+		URL  string `json:"url"`
 	}
 	item := struct {
 		ID                string                           `json:"id"`
@@ -258,6 +264,7 @@ func (m *Message) MarshalJSON() ([]byte, error) {
 		item.Sticker = &StickerAlias{
 			Pack: sticker.Pack,
 			Hash: sticker.Hash,
+			URL:  m.StickerLocalURL,
 		}
 	}
 

protocol/messenger.go

@@ -391,11 +391,6 @@ func NewMessenger(
 	}
 
 	mailservers := mailserversDB.NewDB(database)
-	httpServer, err := server.NewServer(database, logger)
-
-	if err != nil {
-		return nil, err
-	}
 
 	messenger = &Messenger{
 		config:                     &c,
@@ -434,14 +429,13 @@ func NewMessenger(
 		quit:                 make(chan struct{}),
 		requestedCommunities: make(map[string]*transport.Filter),
 		browserDatabase:      c.browserDatabase,
-		httpServer:           httpServer,
+		httpServer:           c.httpServer,
 		shutdownTasks: []func() error{
 			ensVerifier.Stop,
 			pushNotificationClient.Stop,
 			communitiesManager.Stop,
 			encryptionProtocol.Stop,
 			transp.ResetFilters,
-			httpServer.Stop,
 			transp.Stop,
 			func() error { sender.Stop(); return nil },
 			// Currently this often fails, seems like it's safe to ignore them
@@ -671,10 +665,12 @@ func (m *Messenger) Start() (*MessengerResponse, error) {
 		}
 	}
 
+	if m.httpServer != nil {
 		err = m.httpServer.Start()
 		if err != nil {
 			return nil, err
 		}
+	}
 
 	return response, nil
 }
@@ -4051,18 +4047,21 @@ func (m *Messenger) MessageByChatID(chatID, cursor string, limit int) ([]*common
 		}
 
 	}
+	if m.httpServer != nil {
 		for idx := range msgs {
 			msgs[idx].PrepareServerURLs(m.httpServer.Port)
 		}
+	}
 
 	return msgs, nextCursor, nil
 }
 
 func (m *Messenger) prepareMessages(messages map[string]*common.Message) {
+	if m.httpServer != nil {
 		for idx := range messages {
 			messages[idx].PrepareServerURLs(m.httpServer.Port)
 		}
-
+	}
 }
 
 func (m *Messenger) AllMessageByChatIDWhichMatchTerm(chatID string, searchTerm string, caseSensitive bool) ([]*common.Message, error) {

protocol/messenger_config.go

@@ -4,6 +4,7 @@ import (
 	"database/sql"
 	"encoding/json"
 
+	"github.com/status-im/status-go/server"
 	"github.com/status-im/status-go/services/browsers"
 
 	"go.uber.org/zap"
@@ -68,6 +69,7 @@ type config struct {
 	clusterConfig       params.ClusterConfig
 	browserDatabase     *browsers.Database
 	torrentConfig       *params.TorrentConfig
+	httpServer          *server.Server
 
 	verifyTransactionClient  EthClient
 	verifyENSURL             string
@@ -275,3 +277,10 @@ func WithTorrentConfig(tc *params.TorrentConfig) Option {
 		return nil
 	}
 }
+
+func WithHTTPServer(s *server.Server) Option {
+	return func(c *config) error {
+		c.httpServer = s
+		return nil
+	}
+}

server/server.go

@@ -14,6 +14,8 @@ import (
 
 	"go.uber.org/zap"
 
+	"github.com/status-im/status-go/ipfs"
+	"github.com/status-im/status-go/logutils"
 	"github.com/status-im/status-go/protocol/identity/identicon"
 	"github.com/status-im/status-go/protocol/images"
 )
@@ -78,6 +80,11 @@ type identiconHandler struct {
 	logger *zap.Logger
 }
 
+type ipfsHandler struct {
+	logger     *zap.Logger
+	downloader *ipfs.Downloader
+}
+
 func (s *identiconHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	pks, ok := r.URL.Query()["publicKey"]
 	if !ok || len(pks) == 0 {
@@ -160,6 +167,30 @@ func (s *audioHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+func (s *ipfsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	hashes, ok := r.URL.Query()["hash"]
+	if !ok || len(hashes) == 0 {
+		s.logger.Error("no hash")
+		return
+	}
+
+	_, download := r.URL.Query()["download"]
+
+	content, err := s.downloader.Get(hashes[0], download)
+	if err != nil {
+		s.logger.Error("could not download hash", zap.Error(err))
+		return
+	}
+
+	w.Header().Set("Cache-Control", "max-age:290304000, public")
+	w.Header().Set("Expires", time.Now().AddDate(60, 0, 0).Format(http.TimeFormat))
+
+	_, err = w.Write(content)
+	if err != nil {
+		s.logger.Error("failed to write ipfs resource", zap.Error(err))
+	}
+}
+
 type Server struct {
 	Port       int
 	run        bool
@@ -167,16 +198,17 @@ type Server struct {
 	logger     *zap.Logger
 	db         *sql.DB
 	cert       *tls.Certificate
+	downloader *ipfs.Downloader
 }
 
-func NewServer(db *sql.DB, logger *zap.Logger) (*Server, error) {
+func NewServer(db *sql.DB, downloader *ipfs.Downloader) (*Server, error) {
 	err := generateTLSCert()
 
 	if err != nil {
 		return nil, err
 	}
 
-	return &Server{db: db, logger: logger, cert: globalCertificate, Port: 0}, nil
+	return &Server{db: db, logger: logutils.ZapLogger(), cert: globalCertificate, Port: 0, downloader: downloader}, nil
 }
 
 func (s *Server) listenAndServe() {
@@ -216,6 +248,8 @@ func (s *Server) Start() error {
 	handler.Handle("/messages/images", &imageHandler{db: s.db, logger: s.logger})
 	handler.Handle("/messages/audio", &audioHandler{db: s.db, logger: s.logger})
 	handler.Handle("/messages/identicons", &identiconHandler{logger: s.logger})
+	handler.Handle("/ipfs", &ipfsHandler{logger: s.logger, downloader: s.downloader})
+
 	s.server = &http.Server{Handler: handler}
 
 	go s.listenAndServe()

services/ext/service.go

@@ -11,6 +11,7 @@ import (
 	"path/filepath"
 	"time"
 
+	"github.com/status-im/status-go/server"
 	"github.com/status-im/status-go/services/browsers"
 
 	"github.com/syndtr/goleveldb/leveldb"
@@ -104,7 +105,7 @@ func (s *Service) GetPeer(rawURL string) (*enode.Node, error) {
 	return enode.ParseV4(rawURL)
 }
 
-func (s *Service) InitProtocol(nodeName string, identity *ecdsa.PrivateKey, db *sql.DB, multiAccountDb *multiaccounts.Database, acc *multiaccounts.Account, logger *zap.Logger) error {
+func (s *Service) InitProtocol(nodeName string, identity *ecdsa.PrivateKey, db *sql.DB, httpServer *server.Server, multiAccountDb *multiaccounts.Database, acc *multiaccounts.Account, logger *zap.Logger) error {
 	var err error
 	if !s.config.ShhextConfig.PFSEnabled {
 		return nil
@@ -143,7 +144,7 @@ func (s *Service) InitProtocol(nodeName string, identity *ecdsa.PrivateKey, db *
 	s.multiAccountsDB = multiAccountDb
 	s.account = acc
 
-	options, err := buildMessengerOptions(s.config, identity, db, s.multiAccountsDB, acc, envelopesMonitorConfig, s.accountsDB, logger, &MessengerSignalsHandler{})
+	options, err := buildMessengerOptions(s.config, identity, db, httpServer, s.multiAccountsDB, acc, envelopesMonitorConfig, s.accountsDB, logger, &MessengerSignalsHandler{})
 	if err != nil {
 		return err
 	}
@@ -389,6 +390,7 @@ func buildMessengerOptions(
 	config params.NodeConfig,
 	identity *ecdsa.PrivateKey,
 	db *sql.DB,
+	httpServer *server.Server,
 	multiAccounts *multiaccounts.Database,
 	account *multiaccounts.Account,
 	envelopesMonitorConfig *transport.EnvelopesMonitorConfig,
@@ -409,6 +411,7 @@ func buildMessengerOptions(
 		protocol.WithENSVerificationConfig(publishMessengerResponse, config.ShhextConfig.VerifyENSURL, config.ShhextConfig.VerifyENSContractAddress),
 		protocol.WithClusterConfig(config.ClusterConfig),
 		protocol.WithTorrentConfig(&config.TorrentConfig),
+		protocol.WithHTTPServer(httpServer),
 	}
 
 	if config.ShhextConfig.DataSyncEnabled {

services/stickers/api.go

@@ -2,15 +2,9 @@ package stickers
 
 import (
 	"context"
-	"errors"
+	"fmt"
-	"io/ioutil"
 	"math/big"
-	"net/http"
-	"time"
 
-	"github.com/ipfs/go-cid"
-	"github.com/multiformats/go-multibase"
-	"github.com/wealdtech/go-multicodec"
 	"github.com/zenthangplus/goccm"
 	"olympos.io/encoding/edn"
 
@@ -22,14 +16,14 @@ import (
 	"github.com/status-im/status-go/contracts"
 	"github.com/status-im/status-go/contracts/stickers"
 	"github.com/status-im/status-go/eth-node/types"
+	"github.com/status-im/status-go/ipfs"
 	"github.com/status-im/status-go/multiaccounts/accounts"
-	"github.com/status-im/status-go/params"
 	"github.com/status-im/status-go/rpc"
+	"github.com/status-im/status-go/server"
 	"github.com/status-im/status-go/services/rpcfilters"
 	"github.com/status-im/status-go/services/wallet/bigint"
 )
 
-const ipfsGateway = ".ipfs.infura-ipfs.io/"
 const maxConcurrentRequests = 3
 
 // ConnectionType constants
@@ -47,9 +41,12 @@ type API struct {
 	accountsManager *account.GethManager
 	accountsDB      *accounts.Database
 	rpcFiltersSrvc  *rpcfilters.Service
-	config          *params.NodeConfig
+
+	keyStoreDir string
+	downloader  *ipfs.Downloader
+	httpServer  *server.Server
+
 	ctx context.Context
-	client          *http.Client
 }
 
 type Sticker struct {
@@ -68,7 +65,7 @@ type StickerPack struct {
 	Thumbnail string         `json:"thumbnail"`
 	Stickers  []Sticker      `json:"stickers"`
 
-	Status stickerStatus `json:"status,omitempty"`
+	Status stickerStatus `json:"status"`
 }
 
 type StickerPackCollection map[uint]StickerPack
@@ -88,20 +85,21 @@ type ednStickerPackInfo struct {
 	Meta ednStickerPack
 }
 
-func NewAPI(ctx context.Context, acc *accounts.Database, rpcClient *rpc.Client, accountsManager *account.GethManager, rpcFiltersSrvc *rpcfilters.Service, config *params.NodeConfig) *API {
+func NewAPI(ctx context.Context, acc *accounts.Database, rpcClient *rpc.Client, accountsManager *account.GethManager, rpcFiltersSrvc *rpcfilters.Service, keyStoreDir string, downloader *ipfs.Downloader, httpServer *server.Server) *API {
-	return &API{
+	result := &API{
 		contractMaker: &contracts.ContractMaker{
 			RPCClient: rpcClient,
 		},
 		accountsManager: accountsManager,
 		accountsDB:      acc,
 		rpcFiltersSrvc:  rpcFiltersSrvc,
-		config:          config,
+		keyStoreDir:     keyStoreDir,
+		downloader:      downloader,
 		ctx:             ctx,
-		client: &http.Client{
+		httpServer:      httpServer,
-			Timeout: time.Second * 5,
-		},
 	}
+
+	return result
 }
 
 func (api *API) Market(chainID uint64) ([]StickerPack, error) {
@@ -232,39 +230,6 @@ func (api *API) getPurchasedPackIDs(chainID uint64, account types.Address) ([]*b
 	return api.getTokenPackIDs(chainID, tokenIDs)
 }
 
-func hashToURL(hash []byte) (string, error) {
-	// contract response includes a contenthash, which needs to be decoded to reveal
-	// an IPFS identifier. Once decoded, download the content from IPFS. This content
-	// is in EDN format, ie https://ipfs.infura.io/ipfs/QmWVVLwVKCwkVNjYJrRzQWREVvEk917PhbHYAUhA1gECTM
-	// and it also needs to be decoded in to a nim type
-
-	data, codec, err := multicodec.RemoveCodec(hash)
-	if err != nil {
-		return "", err
-	}
-
-	codecName, err := multicodec.Name(codec)
-	if err != nil {
-		return "", err
-	}
-
-	if codecName != "ipfs-ns" {
-		return "", errors.New("codecName is not ipfs-ns")
-	}
-
-	thisCID, err := cid.Parse(data)
-	if err != nil {
-		return "", err
-	}
-
-	str, err := thisCID.StringOfBase(multibase.Base32)
-	if err != nil {
-		return "", err
-	}
-
-	return "https://" + str + ipfsGateway, nil
-}
-
 func (api *API) fetchStickerPacks(chainID uint64, resultChan chan<- *StickerPack, errChan chan<- error, doneChan chan<- struct{}) {
 	defer close(doneChan)
 	defer close(errChan)
@@ -339,18 +304,13 @@ func (api *API) fetchPackData(stickerType *stickers.StickerType, packID *big.Int
 		return nil, err
 	}
 
-	packDetailsURL, err := hashToURL(packData.Contenthash)
-	if err != nil {
-		return nil, err
-	}
-
 	stickerPack := &StickerPack{
 		ID:    &bigint.BigInt{Int: packID},
 		Owner: packData.Owner,
 		Price: &bigint.BigInt{Int: packData.Price},
 	}
 
-	err = api.downloadIPFSData(stickerPack, packDetailsURL, translateHashes)
+	err = api.downloadPackData(stickerPack, packData.Contenthash, translateHashes)
 	if err != nil {
 		return nil, err
 	}
@@ -358,34 +318,19 @@ func (api *API) fetchPackData(stickerType *stickers.StickerType, packID *big.Int
 	return stickerPack, nil
 }
 
-func (api *API) downloadIPFSData(stickerPack *StickerPack, packDetailsURL string, translateHashes bool) error {
+func (api *API) downloadPackData(stickerPack *StickerPack, contentHash []byte, translateHashes bool) error {
-	// This can be improved by adding a cache using packDetailsURL as key
+	fileContent, err := api.downloader.Get(hexutil.Encode(contentHash)[2:], true)
-
-	req, err := http.NewRequest(http.MethodGet, packDetailsURL, nil)
 	if err != nil {
 		return err
 	}
-
+	return api.populateStickerPackAttributes(stickerPack, fileContent, translateHashes)
-	resp, err := api.client.Do(req)
-	if err != nil {
-		return err
-	}
-
-	defer func() {
-		if err := resp.Body.Close(); err != nil {
-			log.Error("failed to close the stickerpack request body", "err", err)
-		}
-	}()
-
-	body, err := ioutil.ReadAll(resp.Body)
-	if err != nil {
-		return err
-	}
-
-	return populateStickerPackAttributes(stickerPack, body, translateHashes)
 }
 
-func populateStickerPackAttributes(stickerPack *StickerPack, ednSource []byte, translateHashes bool) error {
+func (api *API) hashToURL(hash string) string {
+	return fmt.Sprintf("https://localhost:%d/ipfs?hash=%s", api.httpServer.Port, hash)
+}
+
+func (api *API) populateStickerPackAttributes(stickerPack *StickerPack, ednSource []byte, translateHashes bool) error {
 	var stickerpackIPFSInfo ednStickerPackInfo
 	err := edn.Unmarshal(ednSource, &stickerpackIPFSInfo)
 	if err != nil {
@@ -396,15 +341,8 @@ func populateStickerPackAttributes(stickerPack *StickerPack, ednSource []byte, t
 	stickerPack.Name = stickerpackIPFSInfo.Meta.Name
 
 	if translateHashes {
-		stickerPack.Preview, err = decodeStringHash(stickerpackIPFSInfo.Meta.Preview)
+		stickerPack.Preview = api.hashToURL(stickerpackIPFSInfo.Meta.Preview)
-		if err != nil {
+		stickerPack.Thumbnail = api.hashToURL(stickerpackIPFSInfo.Meta.Thumbnail)
-			return err
-		}
-
-		stickerPack.Thumbnail, err = decodeStringHash(stickerpackIPFSInfo.Meta.Thumbnail)
-		if err != nil {
-			return err
-		}
 	} else {
 		stickerPack.Preview = stickerpackIPFSInfo.Meta.Preview
 		stickerPack.Thumbnail = stickerpackIPFSInfo.Meta.Thumbnail
@@ -413,15 +351,7 @@ func populateStickerPackAttributes(stickerPack *StickerPack, ednSource []byte, t
 	for _, s := range stickerpackIPFSInfo.Meta.Stickers {
 		url := ""
 		if translateHashes {
-			hash, err := hexutil.Decode("0x" + s.Hash)
+			url = api.hashToURL(s.Hash)
-			if err != nil {
-				return err
-			}
-
-			url, err = hashToURL(hash)
-			if err != nil {
-				return err
-			}
 		}
 
 		stickerPack.Stickers = append(stickerPack.Stickers, Sticker{
@@ -434,20 +364,6 @@ func populateStickerPackAttributes(stickerPack *StickerPack, ednSource []byte, t
 	return nil
 }
 
-func decodeStringHash(input string) (string, error) {
-	hash, err := hexutil.Decode("0x" + input)
-	if err != nil {
-		return "", err
-	}
-
-	url, err := hashToURL(hash)
-	if err != nil {
-		return "", err
-	}
-
-	return url, nil
-}
-
 func (api *API) getContractPacks(chainID uint64) ([]StickerPack, error) {
 	stickerPackChan := make(chan *StickerPack)
 	errChan := make(chan error)

services/stickers/install.go

@@ -68,25 +68,15 @@ func (api *API) Installed() (StickerPackCollection, error) {
 
 	for packID, stickerPack := range stickerPacks {
 		stickerPack.Status = statusInstalled
-
+		stickerPack.Preview = api.hashToURL(stickerPack.Preview)
-		stickerPack.Preview, err = decodeStringHash(stickerPack.Preview)
+		stickerPack.Thumbnail = api.hashToURL(stickerPack.Thumbnail)
-		if err != nil {
-			return nil, err
-		}
-
-		stickerPack.Thumbnail, err = decodeStringHash(stickerPack.Thumbnail)
-		if err != nil {
-			return nil, err
-		}
-
 		for i, sticker := range stickerPack.Stickers {
-			sticker.URL, err = decodeStringHash(sticker.Hash)
+			sticker.URL = api.hashToURL(sticker.Hash)
 			if err != nil {
 				return nil, err
 			}
 			stickerPack.Stickers[i] = sticker
 		}
-
 		stickerPacks[packID] = stickerPack
 	}
 

services/stickers/pending.go

@@ -3,6 +3,7 @@ package stickers
 import (
 	"encoding/json"
 	"errors"
+	"math/big"
 
 	"github.com/status-im/status-go/multiaccounts/settings"
 	"github.com/status-im/status-go/services/wallet/bigint"
@@ -61,31 +62,61 @@ func (api *API) Pending() (StickerPackCollection, error) {
 
 	for packID, stickerPack := range stickerPacks {
 		stickerPack.Status = statusPending
-
+		stickerPack.Preview = api.hashToURL(stickerPack.Preview)
-		stickerPack.Preview, err = decodeStringHash(stickerPack.Preview)
+		stickerPack.Thumbnail = api.hashToURL(stickerPack.Thumbnail)
-		if err != nil {
-			return nil, err
-		}
-
-		stickerPack.Thumbnail, err = decodeStringHash(stickerPack.Thumbnail)
-		if err != nil {
-			return nil, err
-		}
-
 		for i, sticker := range stickerPack.Stickers {
-			sticker.URL, err = decodeStringHash(sticker.Hash)
+			sticker.URL = api.hashToURL(sticker.Hash)
-			if err != nil {
-				return nil, err
-			}
 			stickerPack.Stickers[i] = sticker
 		}
-
 		stickerPacks[packID] = stickerPack
 	}
 
 	return stickerPacks, nil
 }
 
+func (api *API) ProcessPending(chainID uint64) (pendingChanged StickerPackCollection, err error) {
+	pendingStickerPacks, err := api.pendingStickerPacks()
+	if err != nil {
+		return nil, err
+	}
+
+	accs, err := api.accountsDB.GetAccounts()
+	if err != nil {
+		return nil, err
+	}
+
+	purchasedPacks := make(map[uint]struct{})
+	purchasedPackChan := make(chan *big.Int)
+	errChan := make(chan error)
+	doneChan := make(chan struct{}, 1)
+	go api.getAccountsPurchasedPack(chainID, accs, purchasedPackChan, errChan, doneChan)
+	for {
+		select {
+		case err := <-errChan:
+			if err != nil {
+				return nil, err
+			}
+		case packID := <-purchasedPackChan:
+			if packID != nil {
+				purchasedPacks[uint(packID.Uint64())] = struct{}{}
+			}
+		case <-doneChan:
+			result := make(StickerPackCollection)
+			for _, stickerPack := range pendingStickerPacks {
+				packID := uint(stickerPack.ID.Uint64())
+				if _, exists := purchasedPacks[packID]; !exists {
+					continue
+				}
+				delete(pendingStickerPacks, packID)
+				stickerPack.Status = statusPurchased
+				result[packID] = stickerPack
+			}
+			err = api.accountsDB.SaveSettingField(settings.StickersPacksPending, pendingStickerPacks)
+			return result, err
+		}
+	}
+}
+
 func (api *API) RemovePending(packID *bigint.BigInt) error {
 	pendingPacks, err := api.pendingStickerPacks()
 	if err != nil {

services/stickers/recent.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 
 	"github.com/status-im/status-go/multiaccounts/settings"
+	"github.com/status-im/status-go/services/wallet/bigint"
 )
 
 const maxNumberRecentStickers = 24
@@ -40,17 +41,19 @@ func (api *API) Recent() ([]Sticker, error) {
 	}
 
 	for i, sticker := range recentStickersList {
-		sticker.URL, err = decodeStringHash(sticker.Hash)
+		sticker.URL = api.hashToURL(sticker.Hash)
-		if err != nil {
-			return nil, err
-		}
 		recentStickersList[i] = sticker
 	}
 
 	return recentStickersList, nil
 }
 
-func (api *API) AddRecent(sticker Sticker) error {
+func (api *API) AddRecent(packID *bigint.BigInt, hash string) error {
+	sticker := Sticker{
+		PackID: packID,
+		Hash:   hash,
+	}
+
 	recentStickersList, err := api.recentStickers()
 	if err != nil {
 		return err

services/stickers/service.go

@@ -6,14 +6,16 @@ import (
 	"github.com/ethereum/go-ethereum/p2p"
 	ethRpc "github.com/ethereum/go-ethereum/rpc"
 	"github.com/status-im/status-go/account"
+	"github.com/status-im/status-go/ipfs"
 	"github.com/status-im/status-go/multiaccounts/accounts"
 	"github.com/status-im/status-go/params"
 	"github.com/status-im/status-go/rpc"
+	"github.com/status-im/status-go/server"
 	"github.com/status-im/status-go/services/rpcfilters"
 )
 
 // NewService initializes service instance.
-func NewService(acc *accounts.Database, rpcClient *rpc.Client, accountsManager *account.GethManager, rpcFiltersSrvc *rpcfilters.Service, config *params.NodeConfig) *Service {
+func NewService(acc *accounts.Database, rpcClient *rpc.Client, accountsManager *account.GethManager, rpcFiltersSrvc *rpcfilters.Service, config *params.NodeConfig, downloader *ipfs.Downloader, httpServer *server.Server) *Service {
 	ctx, cancel := context.WithCancel(context.Background())
 
 	return &Service{
@@ -21,8 +23,9 @@ func NewService(acc *accounts.Database, rpcClient *rpc.Client, accountsManager *
 		rpcClient:       rpcClient,
 		accountsManager: accountsManager,
 		rpcFiltersSrvc:  rpcFiltersSrvc,
-		config:          config,
+		keyStoreDir:     config.KeyStoreDir,
-
+		downloader:      downloader,
+		httpServer:      httpServer,
 		ctx:             ctx,
 		cancel:          cancel,
 	}
@@ -34,8 +37,9 @@ type Service struct {
 	rpcClient       *rpc.Client
 	accountsManager *account.GethManager
 	rpcFiltersSrvc  *rpcfilters.Service
-	config          *params.NodeConfig
+	downloader      *ipfs.Downloader
-
+	keyStoreDir     string
+	httpServer      *server.Server
 	ctx             context.Context
 	cancel          context.CancelFunc
 }
@@ -57,7 +61,7 @@ func (s *Service) APIs() []ethRpc.API {
 		{
 			Namespace: "stickers",
 			Version:   "0.1.0",
-			Service:   NewAPI(s.ctx, s.accountsDB, s.rpcClient, s.accountsManager, s.rpcFiltersSrvc, s.config),
+			Service:   NewAPI(s.ctx, s.accountsDB, s.rpcClient, s.accountsManager, s.rpcFiltersSrvc, s.keyStoreDir, s.downloader, s.httpServer),
 		},
 	}
 }

services/stickers/transactions.go

@@ -5,6 +5,8 @@ import (
 	"math/big"
 	"strings"
 
+	"github.com/ethereum/go-ethereum/common/hexutil"
+
 	"github.com/ethereum/go-ethereum"
 	"github.com/ethereum/go-ethereum/accounts/abi"
 	"github.com/ethereum/go-ethereum/accounts/abi/bind"
@@ -19,7 +21,7 @@ import (
 
 func (api *API) getSigner(chainID uint64, from types.Address, password string) bind.SignerFn {
 	return func(addr common.Address, tx *ethTypes.Transaction) (*ethTypes.Transaction, error) {
-		selectedAccount, err := api.accountsManager.VerifyAccountPassword(api.config.KeyStoreDir, from.Hex(), password)
+		selectedAccount, err := api.accountsManager.VerifyAccountPassword(api.keyStoreDir, from.Hex(), password)
 		if err != nil {
 			return nil, err
 		}
@@ -84,63 +86,99 @@ func (api *API) Buy(ctx context.Context, chainID uint64, txArgs transactions.Sen
 	return tx.Hash().String(), nil
 }
 
-func (api *API) BuyEstimate(ctx context.Context, chainID uint64, from types.Address, packID *bigint.BigInt) (uint64, error) {
+func (api *API) BuyPrepareTxCallMsg(chainID uint64, from types.Address, packID *bigint.BigInt) (ethereum.CallMsg, error) {
 	callOpts := &bind.CallOpts{Context: api.ctx, Pending: false}
 
 	stickerType, err := api.contractMaker.NewStickerType(chainID)
 	if err != nil {
-		return 0, err
+		return ethereum.CallMsg{}, err
 	}
 
 	packInfo, err := stickerType.GetPackData(callOpts, packID.Int)
 	if err != nil {
-		return 0, err
+		return ethereum.CallMsg{}, err
 	}
 
 	stickerMarketABI, err := abi.JSON(strings.NewReader(stickers.StickerMarketABI))
 	if err != nil {
-		return 0, err
+		return ethereum.CallMsg{}, err
 	}
 
 	extraData, err := stickerMarketABI.Pack("buyToken", packID.Int, from, packInfo.Price)
 	if err != nil {
-		return 0, err
+		return ethereum.CallMsg{}, err
 	}
 
 	sntABI, err := abi.JSON(strings.NewReader(snt.SNTABI))
 	if err != nil {
-		return 0, err
+		return ethereum.CallMsg{}, err
 	}
 
 	stickerMarketAddress, err := stickers.StickerMarketContractAddress(chainID)
 	if err != nil {
-		return 0, err
+		return ethereum.CallMsg{}, err
 	}
 
 	data, err := sntABI.Pack("approveAndCall", stickerMarketAddress, packInfo.Price, extraData)
 	if err != nil {
-		return 0, err
+		return ethereum.CallMsg{}, err
 	}
 
+	sntAddress, err := snt.ContractAddress(chainID)
+	if err != nil {
+		return ethereum.CallMsg{}, err
+	}
+
+	return ethereum.CallMsg{
+		From:  common.Address(from),
+		To:    &sntAddress,
+		Value: big.NewInt(0),
+		Data:  data,
+	}, nil
+}
+
+func (api *API) BuyPrepareTx(ctx context.Context, chainID uint64, from types.Address, packID *bigint.BigInt) (interface{}, error) {
+	callMsg, err := api.BuyPrepareTxCallMsg(chainID, from, packID)
+	if err != nil {
+		return nil, err
+	}
+
+	return toCallArg(callMsg), nil
+}
+
+func (api *API) BuyEstimate(ctx context.Context, chainID uint64, from types.Address, packID *bigint.BigInt) (uint64, error) {
+	callMsg, err := api.BuyPrepareTxCallMsg(chainID, from, packID)
+	if err != nil {
+		return 0, err
+	}
 	ethClient, err := api.contractMaker.RPCClient.EthClient(chainID)
 	if err != nil {
 		return 0, err
 	}
 
-	sntAddress, err := snt.ContractAddress(chainID)
+	return ethClient.EstimateGas(ctx, callMsg)
-	if err != nil {
-		return 0, err
-	}
-
-	return ethClient.EstimateGas(ctx, ethereum.CallMsg{
-		From:  common.Address(from),
-		To:    &sntAddress,
-		Value: big.NewInt(0),
-		Data:  data,
-	})
-
 }
 
 func (api *API) StickerMarketAddress(ctx context.Context, chainID uint64) (common.Address, error) {
 	return stickers.StickerMarketContractAddress(chainID)
 }
+
+func toCallArg(msg ethereum.CallMsg) interface{} {
+	arg := map[string]interface{}{
+		"from": msg.From,
+		"to":   msg.To,
+	}
+	if len(msg.Data) > 0 {
+		arg["data"] = hexutil.Bytes(msg.Data)
+	}
+	if msg.Value != nil {
+		arg["value"] = (*hexutil.Big)(msg.Value)
+	}
+	if msg.Gas != 0 {
+		arg["gas"] = hexutil.Uint64(msg.Gas)
+	}
+	if msg.GasPrice != nil {
+		arg["gasPrice"] = (*hexutil.Big)(msg.GasPrice)
+	}
+	return arg
+}

services/wakuext/api_test.go

@@ -136,7 +136,7 @@ func TestInitProtocol(t *testing.T) {
 
 	acc := &multiaccounts.Account{KeyUID: "0xdeadbeef"}
 
-	err = service.InitProtocol("Test", privateKey, sqlDB, multiAccounts, acc, zap.NewNop())
+	err = service.InitProtocol("Test", privateKey, sqlDB, nil, multiAccounts, acc, zap.NewNop())
 	require.NoError(t, err)
 }
 
@@ -201,7 +201,7 @@ func (s *ShhExtSuite) createAndAddNode() {
 
 	acc := &multiaccounts.Account{KeyUID: "0xdeadbeef"}
 
-	err = service.InitProtocol("Test", privateKey, sqlDB, multiAccounts, acc, zap.NewNop())
+	err = service.InitProtocol("Test", privateKey, sqlDB, nil, multiAccounts, acc, zap.NewNop())
 	s.NoError(err)
 
 	stack.RegisterLifecycle(service)

services/wallet/price.go

@@ -12,7 +12,7 @@ import (
 func fetchCryptoComparePrices(symbols []string, currency string) (map[string]float64, error) {
 	httpClient := http.Client{Timeout: time.Minute}
 
-	url := fmt.Sprintf("https://min-api.cryptocompare.com/data/pricemulti?fsyms=%s&tsyms=%s", strings.Join(symbols, ","), currency)
+	url := fmt.Sprintf("https://min-api.cryptocompare.com/data/pricemulti?fsyms=%s&tsyms=%s&extraParams=Status.im", strings.Join(symbols, ","), currency)
 	resp, err := httpClient.Get(url)
 	if err != nil {
 		return nil, err