Error: Malformed part header

See original GitHub issue

Error: Malformed part header
    at SBMH.ssCb [as _cb] (node_modules\busboy\lib\types\multipart.js:380:41)
    at feed (node_modules\streamsearch\lib\sbmh.js:219:14)
    at SBMH.push (node_modules\streamsearch\lib\sbmh.js:104:16)
    at Multipart._write (node_modules\busboy\lib\types\multipart.js:549:19)
    at writeOrBuffer (internal/streams/writable.js:358:12)
    at Multipart.Writable.write (internal/streams/writable.js:303:10)
    at IncomingMessage.ondata (internal/streams/readable.js:719:22)
    at IncomingMessage.emit (events.js:315:20)
    at IncomingMessage.Readable.read (internal/streams/readable.js:519:10)
    at flow (internal/streams/readable.js:992:34)
    at resume_ (internal/streams/readable.js:973:3)
    at processTicksAndRejections (internal/process/task_queues.js:80:21)

I encountered this error when I tried to upload multiple files (about more than 1000). I debugged and found the error occur at multipart.js file line 91 (shown below)

mt1

Another question here is about “MAX_HEADER_SIZE”. If the sum of all subpart Content-Disposition header size exceed “MAX_HEADER_SIZE”, this error will occur ? Or if any one subpart Content-Disposition header size exceed “MAX_HEADER_SIZE”, it will occur ?

Issue Analytics

State:
Created 2 years ago
Comments:7 (4 by maintainers)

Top GitHub Comments

1reaction

mscdexcommented, Dec 30, 2021

Can you try this patch?:

diff --git a/lib/types/multipart.js b/lib/types/multipart.js
index 9e38806..7a64bc5 100644
--- a/lib/types/multipart.js
+++ b/lib/types/multipart.js
@@ -157,11 +157,7 @@ class HeaderParser {
                 return -1;
               // End of header
               const header = this.header;
-              this.header = Object.create(null);
-              this.crlf = 0;
-              this.state = HPARSER_NAME;
-              this.name = '';
-              this.value = '';
+              this.reset();
               this.cb(header);
               return pos;
             }

1reaction

mscdexcommented, Dec 30, 2021

The header size limit is for each part.

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