Migrate from Helius Shred Delivery to shredstream.sh

Draw the platform boundary

This is a partial migration. Helius may still sit in several application paths after its shred delivery is removed. RPC calls can remain. Webhook flows can remain. Indexing queries can remain. Only the raw shred source moves to shredstream.sh unless your team opens a separate project for something else.

That boundary is the main safety feature. A broad platform exit would mix different data shapes, consumers, credentials, failure modes, and acceptance tests. A shred-source change is much smaller. It introduces one Frankfurt UDP sender and leaves the rest of the application graph intact.

Create an explicit service map before touching configuration:

Replace the generic consumer names with real services and owners. If a row has no owner, investigate it instead of assuming it is unused. The table should also name the configuration key or secret for each connection so that the shred change cannot accidentally rotate or delete unrelated access.

State the new responsibility line plainly. One ip:port selected by the customer receives raw Solana shreds from shredstream.sh. Your code receives and decodes them. Helius continues to serve the retained calls and deliveries already used elsewhere. Two providers in one stack is the intended result, not an unfinished state.

Protect unrelated application services

Freeze the retained Helius integrations during the packet cutover. Do not rename RPC environment variables, redeploy webhook consumers, rewrite indexing queries, or consolidate credentials as a side task. Stability on those branches gives the shred team reliable reference points.

For every service that stays, record why it stays and how its health is observed. An RPC consumer may need response checks. A webhook handler may need delivery freshness. An indexing job may need query-result progress. Use the metrics already appropriate to those systems rather than tying them to shred packet rate.

Separate billing ownership too. Removing shred delivery does not by itself authorize cancellation of the wider platform account. The owner of each remaining integration should confirm that its access and commercial coverage continue through the migration window.

This restraint reduces rollback complexity. If the candidate shred decoder misbehaves, the team only switches the packet-driven consumer back. RPC, webhooks, and indexing never moved, so they require no restoration. That is the practical advantage of a clean partial exit.

Move only the shred ingress

Purchase one destination for the production receiver. The price is $100 for 30 days per ip:port, payable using USDC or SOL. Delivery originates in Frankfurt. Validate the route from the intended production receiver.

Choose a new UDP port for the candidate. Admit only sender 203.23.178.228 on it. Keep the Helius shred socket separate during evaluation, even if both sockets eventually feed the same parser. Different ports make captures, counters, and reversions easy to interpret.

The receiver must preserve the entire 1228-byte packet maximum. It must not expect ordered arrival, retransmission, or sender-side flow control. If the process cannot keep pace, excess work becomes local loss rather than a slower upstream stream. These are properties to handle at intake, before any Helius platform data participates.

Preserve source metadata until comparison completes. Attach an ingress label and monotonic timestamp to each packet before deduplication or reconstruction. A shared decoder can then process both lanes without erasing which provider supplied each observation.

The new ip:port is a raw UDP destination. Keep RPC clients, webhooks, indexing, and decoding on their established application paths.

Give each dependency an owner

Search the deployment configuration for Helius hostnames, account identifiers, secret names, service labels, and dashboard filters. Classify every result as shred, RPC, webhook, indexing, billing, or unknown. The unknown group deserves review before the change window.

Assign two owners where responsibilities differ. The network owner controls the destination and allowlist. The application owner controls the receiver, decoder, filters, and source selector. Owners of retained Helius branches verify that their services continue normally, but they should not need to deploy changes.

Pay special attention to shared health summaries. A single platform-green status can hide a failed shred lane, while a removed shred check can make healthy retained services appear degraded. Split alerts by capability before cutover so each signal describes one actionable problem.

Shared secrets are another trap. If one credential bundle contains keys for several Helius functions, do not delete the bundle when raw delivery ends. Remove or rotate only what the confirmed shred configuration uses, and schedule that cleanup after rollback closes.

Prove the new packet path

Destination verification happens on the machine that controls the nominated address. On the selected port, capture the UDP challenge containing SHREDCAST-VERIFY. Extract its token and submit that value back. Normal packet forwarding begins only after control has been proven.

Run the verification through the production routing path. A token received on an engineer's workstation says nothing about the firewall, NAT mapping, or bind address of the real host. Save the attempt time and capture metadata, but do not store the token as a permanent credential.

Once delivery starts, confirm three layers independently. Network capture should label the UDP sender as 203.23.178.228. The receiver should count complete messages through the 1228-byte limit. The decoder should advance using candidate inputs and expose rejects by reason.

Do not use a successful socket bind as health evidence. UDP can bind while no packets arrive. Likewise, a rising receive counter does not prove valid Solana shreds are being decoded. Build separate indicators for route, intake, parse, reconstruction, and useful output.

This proof stays entirely inside the shred branch. Existing RPC requests and webhook deliveries should continue on their current endpoints throughout the exercise.

Join raw shreds back to platform data

The candidate and the retained platform services describe different stages of the data path. Preserve that distinction when validating behavior. First compare candidate packets with the incumbent shred lane at ingress. Later compare locally decoded outcomes with the downstream information your application already consumes.

For packet analysis, pair feeds through parsed shred identity. Calculate arrival timing only among matched identities, and report one-sided observations as coverage. Averages that silently exclude missing items can give a false impression of speed.

For application analysis, let the candidate lane reconstruct, decode, and filter in shadow. It may generate logs, metrics, or inert decisions, but it must not mutate production state. Compare those results at the point where your business logic would normally act.

Helius RPC, webhooks, and indexing can continue to serve their existing roles in later reconciliation. They are not packet-for-packet mirrors. A webhook or indexed record has passed through a different pipeline and may naturally appear at another time. Compare meaning at equivalent application milestones, not raw timestamps across unlike products.

Keep confirmation logic unchanged. Raw shreds are early input to your system, while confirmed application state should still follow the source and rules already chosen by the application. This migration changes how quickly one branch sees proposed data. It does not redefine truth for the rest of the stack.

Save examples of disagreement with source labels attached. The investigation should be able to distinguish missing UDP, decoder rejection, filter differences, and a normal delay in another platform service.

Switch one consumer at a time

Promote the new feed at the narrowest controllable point. A selector after decoding is often safer than changing every downstream consumer because both sources can use the same established output shape. Whatever control you choose, ensure only one lane can cause production side effects.

Write an acceptance record before promotion. It should name the observation period, maximum acceptable local drop behavior, decoder error boundary, queue-age limit, expected application matches, and retained Helius checks. Threshold values belong to your application, not to either provider.

During the change window, leave the Helius packet path running in shadow. If the Frankfurt lane fails the written criteria, restore authority to the old decoded stream and preserve the candidate's captures and counters. The other Helius services remain untouched in either direction.

After the first consumer is stable, move another only if the architecture actually has separate shred-driven consumers. Avoid a global environment-variable replacement that changes unreviewed processes. Per-consumer promotion exposes hidden dependencies while rollback remains small.

Test receiver restart behavior before declaring success. UDP offers no resumption cursor. Packets transmitted while the socket is unavailable do not arrive later. The process should reopen its port, resume future intake, and signal freshness without pretending that the gap was replayed.

Watch both sides after cutover

Create two operational views. The new shred view should track last packet age, sender address, datagram size distribution, kernel drops, parser results, reconstruction progress, queue age, and decode-to-action delay. The retained platform view should continue showing RPC, webhook, and indexing health with no dependency on the removed source.

Alert separately on receipt and usefulness. A firewall regression produces no candidate packets. A decoder regression can produce healthy network counts with no valid output. Consumer overload can maintain decoding while delivering events too late. These failures require different responders.

Expect disorder in the UDP lane. Sequence shreds by their protocol identifiers, accept late arrivals according to your decoder policy, and prevent duplicates from triggering repeated actions. Because the sender cannot receive backpressure, set bounded queues and make overflow visible.

Review access controls after the observation period. Keep one specific rule with the selected destination port and sender 203.23.178.228. Close the former shred port once rollback is no longer required. Leave network paths used by Helius RPC and webhooks alone.

Give billing reports the same separation as alerts. One line can end while the broader platform relationship continues. Owners should be able to explain which spend funds raw packet delivery and which spend supports the services that stayed.

Finish a partial migration cleanly

The finished architecture is deliberately mixed. shredstream.sh supplies raw shreds from Frankfurt to the verified ip:port. Helius supplies the RPC, webhooks, and indexing that your dependency map retained. Your own receiver and decoder sit between the UDP feed and the application.

Update diagrams to show that split instead of replacing every Helius label with the new provider name. Remove only shred-specific endpoint settings, source rules, secrets, and alerts after the rollback interval. Shared platform credentials remain until their actual consumers are gone.

Record the product contract beside the receiver runbook: each $100 purchase serves one destination for 30 days, settlement takes USDC or SOL, 1228 bytes is the packet ceiling, delivery is unordered, and neither retransmit nor backpressure exists. Include the destination renewal owner and expected sender 203.23.178.228.

A completion review should ask two groups of questions. Is the new UDP branch verified, decoded, monitored, and authoritative? Are retained Helius branches still healthy, owned, paid, and intentionally unchanged? Both answers must be yes.

This focused finish is easy to operate. The raw shred bill moves to shredstream.sh without disrupting RPC, webhook, and indexing dependencies outside this project. Those services can move under separate change plans when required.