Retry transient Ponder GraphQL network errors - #125
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The GetPositionsV2 sync job occasionally sees a "Premature close" from the indexer, consistent with a stale keep-alive socket being reused right as it's closed server-side. The existing fallback path only retries when the fallback URL differs from the primary, and in this deployment they're intentionally the same host, so every occurrence went straight to the logs with nothing more attempted. Adds a RetryLink ahead of the HTTP link so transport-level failures get a few short, jittered retries before reaching the error/fallback handling, independent of how primary/fallback are configured. GraphQL-level errors are unaffected.
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The GetPositionsV2 sync job occasionally sees a "Premature close" from the indexer, consistent with a stale keep-alive socket being reused right as it's closed server-side. The existing fallback path only retries when the fallback URL differs from the primary, and in this deployment they're intentionally the same host, so every occurrence went straight to the logs with nothing more attempted.
Adds a RetryLink ahead of the HTTP link so transport-level failures get a few short, jittered retries before reaching the error/fallback handling, independent of how primary/fallback are configured. GraphQL-level errors are unaffected.