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| ID | Category | Severity | Reproducibility | Date Submitted | Last Update | ||||
| 0003804 | [Hessian] | minor | always | 12-08-09 09:18 | 12-17-09 18:21 | ||||
| Reporter | emil | View Status | public | ||||||
| Assigned To | |||||||||
| Priority | normal | Resolution | fixed | ||||||
| Status | closed | Product Version | 4.0.2 | ||||||
| Summary | 0003804: hessian flash long strings | ||||||||
| Description |
(rep by Piet van Remortel) We are trying to fix an unexplainable error in communicating between java (hessian 4.0.2) and flex (hessian 4.0.0). For some input files we get a "expected string at XX" where XX is a position number. Digging into the code, we find that this seems like a wrong or unexpected code coming in when reading characters. Is this a version mismatch ? If so, is there a plan to push the flex version to 4.0.2 also ? ... We stepped through the code and noticed the following: We typically transmit long files consisting of strings (XML). Whenever such a file is chopped up in blocks of 0x8000 size, the following can happen, making things go wrong: When a string's length is a multiple of 0x8000, plus a tail that is less then 0x0400, the tail gets misread in the parseChar() method, since there is no case clause capturing BC_STRING_SHORT. The following adaptation of parseChar() in Hessian2Input fixes this: (Actionscript version given - analogous for Java) //========= ... _isLastChunk = true; _chunkLength = code - 0x00; break; // fix start ============== case Hessian2Constants.BC_STRING_SHORT: case Hessian2Constants.BC_STRING_SHORT + 1: case Hessian2Constants.BC_STRING_SHORT + 2: _isLastChunk = true; _chunkLength = ((code - Hessian2Constants.BC_STRING_SHORT) << 8) + read(); break; // fix end ================ default: throw expect("string", code); } } _chunkLength--; return parseUTF8Char(); } //========= |
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(0004350) emil 12-17-09 18:21 |
Hessian2InputOutputTests - 0x8000 + 0x400 String: "a" * 0x8400 |
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Issue History |
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| Date Modified | Username | Field | Change |
| 12-08-09 09:18 | emil | New Issue | |
| 12-17-09 02:25 | Marian Kolesar | Issue Monitored: Marian Kolesar | |
| 12-17-09 18:21 | emil | Status | new => closed |
| 12-17-09 18:21 | emil | Note Added: 0004350 | |
| 12-17-09 18:21 | emil | Resolution | open => fixed |
| 12-17-09 18:21 | emil | Fixed in Version | => 4.0.3 |
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