value issue in additional header

[feifangit]

I'm new to LUA, I tried to upload file with some meta data with curl command curl -i -X POST -F "uuid=123" -F "fileobj=@1.txt http://somewhere"

But the value of uuid which is "123" seems be truncated in the the value, and even the line.

["Content-Disposition","form-data; name=\"uuid\"","Content-Disposition: form-data; name=\"uuid\""]

I noticed there're double \r\n pairs located between uuid and its value.

020: 39 36 63 64 63 33 39 31 35 33 0d 0a 43 6f 6e 74 96cdc39153..Cont
0030: 65 6e 74 2d 44 69 73 70 6f 73 69 74 69 6f 6e 3a ent-Disposition:
0040: 20 66 6f 72 6d 2d 64 61 74 61 3b 20 6e 61 6d 65  form-data; name
0050: 3d 22 75 75 69 64 22 0d 0a 0d 0a 31 32 33 0d 0a ="uuid"....123..
0060: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d ----------------
0070: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 30 62 --------------0b
0080: 39 36 63 64 63 33 39 31 35 33 0d 0a 43 6f 6e 74 96cdc39153..Cont
0090: 65 6e 74 2d 44 69 73 70 6f 73 69 74 69 6f 6e 3a ent-Disposition:
00a0: 20 66 6f 72 6d 2d 64 61 74 61 3b 20 6e 61 6d 65  form-data; name
00b0: 3d 22 66 69 6c 65 6f 62 6a 22 3b 20 66 69 6c 65 ="fileobj"; file
00c0: 6e 61 6d 65 3d 22 31 2e 74 78 74 22 0d 0a 43 6f name="1.txt"..Co
00d0: 6e 74 65 6e 74 2d 54 79 70 65 3a 20 74 65 78 74 ntent-Type: text
00e0: 2f 70 6c 61 69 6e 0d 0a 0d 0a                   /plain....

BTW. any better solution to obtain the extra information(you defined as header) from multipart uploading request?

[agentzh]

@feifangit This is the expected behavior of curl's -F option. For -F "uuid=123", curl generates something like the following:

------------------------------4471b0132daf
Content-Disposition: form-data; name="uuid"

123
------------------------------4471b0132daf--

So the value 123 becomes the content body of the corresponding part.

[feifangit]

Thanks for you explanation, you enlightened me :P