Add TransactionType and adapt parser to parse them

src_common/ethUstream.c

@@ -263,7 +263,14 @@ static parserStatus_e processTxInternal(txContext_t *context) {
         if (context->commandLength == 0) {
             return USTREAM_PROCESSING;
         }
+        // EIP 2718: TransactionType might be present before the TransactionPayload.
+        if (*context->workBuffer > 0x00 && *context->workBuffer < 0x7f) {
+            context->txType = *context->workBuffer;
+            context->workBuffer++;
+            PRINTF("TX TYPE: %u\n", context->txType);
+        }
         if (!context->processingField) {
+            PRINTF("PROCESSING FIELD\n");
             bool canDecode = false;
             uint32_t offset;
             while (context->commandLength != 0) {

src_common/ethUstream.h

@@ -53,6 +53,12 @@ typedef enum rlpTxField_e {
     TX_RLP_DONE
 } rlpTxField_e;
 
+// EIP 2718 TransactionType
+typedef enum txType_e {
+    LegacyTransaction = 1,
+    BerlinTransaction = 2
+} txType_e;
+
 typedef enum parserStatus_e {
     USTREAM_PROCESSING,
     USTREAM_SUSPENDED,
@@ -93,6 +99,7 @@ typedef struct txContext_t {
     ustreamProcess_t customProcessor;
     txContent_t *content;
     void *extra;
+    uint8_t txType;
 } txContext_t;
 
 void initTx(txContext_t *context,