Streaming connection drops mid-response with 0 tokens received

Description

Claude Code frequently gets stuck mid-response, showing "Dilly-dallying" with 0 tokens received even after a partial response has been displayed. The response cuts off mid-sentence and no further tokens arrive.

Environment

• Claude Code version: 2.1.15
• OS: macOS Sequoia (Darwin 25.2.0)
• Node.js: v20.17.0

Steps to Reproduce

1. Start a Claude Code session
2. Send a message (even short ones with 2-3 message context)
3. Observe response getting cut off mid-sentence
4. Status shows: Dilly-dallying… (esc to interrupt · Xm Xs · ↓ 0 tokens)

Expected Behavior

Response should complete fully or provide a clear error if the connection fails.

Actual Behavior

• Response starts normally
• Gets cut off mid-sentence (e.g., "For example, I" then stops)
• Status shows 0 tokens being received
• Session hangs indefinitely unless manually interrupted with esc

Additional Context

• Happens frequently, not a one-off
• Network connection is stable (no VPN, wired/WiFi both affected)
• Happens with short contexts (2-3 messages), not just long conversations
• Only workaround is pressing esc to interrupt and retry

Screenshot

The status bar shows the issue clearly - response started but connection appears to have dropped silently without triggering an error state.

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Reported via Claude Code