91 lines
1.9 KiB
Go
91 lines
1.9 KiB
Go
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package clients
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"time"
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"github.com/gagliardetto/solana-go"
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)
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type FlashBlockBundleRequest struct {
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Transactions []string `json:"transactions"`
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}
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type FlashBlockClient struct {
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sendTxUrl string
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sendBundleUrl string
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client *http.Client
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}
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func NewFlashBlockClient(sendTxUrl string, sendBundleUrl string) *FlashBlockClient {
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// create custom transport with keep-alive enabled
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transport := &http.Transport{
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MaxIdleConns: 100,
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MaxIdleConnsPerHost: 10,
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IdleConnTimeout: 65 * time.Second,
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DisableKeepAlives: false, // enable keep-alive
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}
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client := &http.Client{
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Transport: transport,
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Timeout: 30 * time.Second,
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}
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return &FlashBlockClient{
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sendTxUrl: sendTxUrl,
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sendBundleUrl: sendBundleUrl,
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client: client,
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}
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}
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func (c *FlashBlockClient) SendTransaction(ctx context.Context, tx *solana.Transaction) error {
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return c.SendBundle(ctx, []*solana.Transaction{tx})
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}
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func (c *FlashBlockClient) SendBundle(ctx context.Context, txs []*solana.Transaction) error {
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request := FlashBlockBundleRequest{
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Transactions: make([]string, 0, len(txs)),
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}
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for _, tx := range txs {
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request.Transactions = append(request.Transactions, tx.MustToBase64())
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}
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jsonData, err := json.Marshal(request)
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if err != nil {
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return err
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}
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req, err := http.NewRequestWithContext(ctx, http.MethodPost, c.sendBundleUrl, bytes.NewReader(jsonData))
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if err != nil {
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return err
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}
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req.Header.Set("Content-Type", "application/json")
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req.Header.Set("Authorization", "0b1ef3abade04426") // TODO: maybe config?
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resp, err := c.client.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return err
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}
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if resp.StatusCode != http.StatusOK {
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return fmt.Errorf("status code: %d, body: %s", resp.StatusCode, string(body))
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}
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return nil
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}
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