Thrift memory explosion fix

binary_protocol.go.diff

22c23
---
> 	"bytes"
475c477,478
---
> const readLimit = 32768
> 
482c486
---
> 	/* Original version
491c495,523
< }
---
> 	*/
> 	var (
> 		buf bytes.Buffer
> 		e   error
> 		b   []byte
> 	)
> 
> 	switch {
> 	case int(size) <= len(p.buffer):
> 		b = p.buffer[:size] // avoids allocation for small reads
> 	case int(size) < readLimit:
> 		b = make([]byte, size)
> 	default:
> 		b = make([]byte, readLimit)
> 	}
> 
> 	for size > 0 {
> 		_, e = io.ReadFull(p.trans, b)
> 		buf.Write(b)
> 		if e != nil {
> 			break
> 		}
> 		size -= readLimit
> 		if size < readLimit && size > 0 {
> 			b = b[:size]
> 		}
> 	}
> 	return buf.String(), NewTProtocolException(e)
> }