[ 
https://issues.apache.org/jira/browse/THRIFT-1727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13495772#comment-13495772
 ] 

XB edited comment on THRIFT-1727 at 11/13/12 12:11 AM:
-------------------------------------------------------

You are right, the read-path also needs support as the write-path does.

However, this looks to be not particularly complicated (see 
https://issues.apache.org/jira/browse/THRIFT-1726 ):

{noformat}
diff --git a/lib/rb/lib/thrift/struct_union.rb 
b/lib/rb/lib/thrift/struct_union.rb
index 4e0afcf..7df859c 100644
--- a/lib/rb/lib/thrift/struct_union.rb
+++ b/lib/rb/lib/thrift/struct_union.rb
@@ -100,6 +100,12 @@ module Thrift
           end
         end
         iprot.read_set_end
+      when Types::STRING
+        if field[:binary]
+          value = Bytes.force_binary_encoding(iprot.read_type(field[:type]))
+        else
+          value = iprot.read_type(field[:type])
+        end
       else
         value = iprot.read_type(field[:type])
       end
{noformat}

                
      was (Author: xb):
    You are right, the read-path also needs support as the write path does.

However, this looks to be not particularly complicated (see 
https://issues.apache.org/jira/browse/THRIFT-1726 ):

{noformat}
diff --git a/lib/rb/lib/thrift/struct_union.rb 
b/lib/rb/lib/thrift/struct_union.rb
index 4e0afcf..7df859c 100644
--- a/lib/rb/lib/thrift/struct_union.rb
+++ b/lib/rb/lib/thrift/struct_union.rb
@@ -100,6 +100,12 @@ module Thrift
           end
         end
         iprot.read_set_end
+      when Types::STRING
+        if field[:binary]
+          value = Bytes.force_binary_encoding(iprot.read_type(field[:type]))
+        else
+          value = iprot.read_type(field[:type])
+        end
       else
         value = iprot.read_type(field[:type])
       end
{noformat}

                  
> Ruby-1.9: data loss: "binary" fields are re-encoded
> ---------------------------------------------------
>
>                 Key: THRIFT-1727
>                 URL: https://issues.apache.org/jira/browse/THRIFT-1727
>             Project: Thrift
>          Issue Type: Bug
>          Components: Ruby - Library
>    Affects Versions: 0.9
>         Environment: JRuby 1.6.8 using "--1.9" command line parameter.
>            Reporter: XB
>
> When setting a binary field of a Thrift object with some binary data (e.g. a 
> string whose encoding is "ASCII-8BIT") and then serializing this object, the 
> binary data is re-encoded. That is, it is encoded as if it were not a 
> sequence of bytes but a sequence of characters, encoded using the ISO-8859-1 
> encoding. This assumed ISO-8859-1 sequence of characters is then converted 
> into UTF-8 (by BinaryProtocol or CompactProtocol). This basically means that 
> all bytes whose values are between 0x80 (inclusive) and 0x100 (exclusive) are 
> converted into multi-byte sequences. This leads to data corruption.

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