# error: unexpected EOF

- **ID:** `go/io-reader-error-unexpected-eof`
- **Domain:** go
- **Category:** io_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

在读取数据时，数据流在预期之前结束，通常是因为连接中断或文件损坏。

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 1.20 | active | — | — |

## Workarounds

1. **** (85% success)
   ```
   buf := make([]byte, 1024)
_, err := io.ReadFull(reader, buf)
if err == io.ErrUnexpectedEOF { log.Println("数据不完整") }
   ```
2. **** (80% success)
   ```
   if conn != nil { defer conn.Close() }
   ```

## Dead Ends

- **** — 会导致数据不完整或程序崩溃。 (90% fail)
- **** — 缓冲区大小不是根因，问题在于数据源提前结束。 (70% fail)