feat(coprocessor): host-listener + transaction-sender, delegations (#1092)

* feat(coprocessor): host-listener + transaction-sender, delegations

* fix(host-contracts): delegations, expiry/expiration

* test(test-suite): delegate user decryption, happy path test

* test(coprocessor): host-listener, faster test

* fix(coprocessor): update delegation db expiration date type

Author: rudy-6-4

.github/workflows/test-suite-e2e-tests.yml

@@ -182,6 +182,11 @@ jobs:
         run: |
           ./fhevm-cli test public-decrypt-http-mixed
 
+      - name: Delegate User Decryption (partial test)
+        working-directory: test-suite/fhevm
+        run: |
+          ./fhevm-cli test delegate-user-decryption
+
       - name: Show logs on test failure
         working-directory: test-suite/fhevm
         if: always()

charts/coprocessor/Chart.yaml

@@ -1,6 +1,6 @@
 name: coprocessor
 description: A helm chart to distribute and deploy Zama fhevm Co-Processor services
-version: 0.7.3
+version: 0.7.4
 apiVersion: v2
 keywords:
   - fhevm

charts/coprocessor/values.yaml

@@ -757,9 +757,16 @@ txSender:
     - --gas-limit-overprovision-percent=120
     - --graceful-shutdown-timeout=8s
     - --service-name=txn-sender
+    # New in 0.10
     - --metric-host-txn-latency=0.1:60.0:0.1
     - --metric-zkproof-txn-latency=0.1:60.0:0.1
     - --gauge-update-interval-secs=10
+    - --host-chain-url=$(ETHEREUM_RPC_URL)
+    - --delegation-block-delay=10  # not applied immediately to avoid reorg
+    - --delegation-clear-after-n_blocks=648000  # ~3 months at 12s block time, only on successful delegations
+    - --delegation-fallback-polling=30  # polling fallback in seconds when notification are not received
+    - --delegation-max-retry=100000  # does not include immediate retry on transient error which are infinite
+    - --retry-immediately-on-nonce-error=2  # nonce error happens as error from one transaction can invalidate other nonce
 
   # Service ports configuration
   ports: