HTTP adapter header fields

Hai All,
Is there any option to add header fields dynamically in the HTTp adapter header fields?
I am doing a file to HTTp scenario.In this i have to pick a file using file adapter and add some header values(header values are both static and dynamic)and using HTTP adapter place it at a target URL.Is it possible to avoid mapping since there is only picking up of file and adding some headers to it.I can see header fields in the HTTP reseiver adapter.Can i use these to add the static and dynamiuc header fields.specifically i have two questions.
1)I want to include the source file name which is DYNAMIC as a field in the header fields in the target payload.How can this be achieved?Should i go for mapping and write a UDF for the same or is there any option to add dynamic values in the HTTP receiver adapter header fields?
2)what are these header fields for?
Can somebody explain it to me.I have gone through the Blogs like http receiver adapter configuration etc..would be of great help if anybody could explain it to me in detail.

Thanks for the replies but my question is still un answered.please guide me on how to proceed?
I am going to send a txt file.On top of the contents of the file i want these headers to be attached
In the header fields of HTTP receiver adapter configuration can i give the following format?
Header           Value
AS2 from:    hgdfdjfhd
AS2 to:        fhdfjdfdfnd
subject:       hdsjdhsdsd
will it appear in the target file as
AS2 from:    hgdfdjfhd
AS2 to:        fhdfjdfdfnd
subject:       hdsjdhsdsd
//file content starts here
dsgdsjfgdsfggf
hfdjhfdhfdjfdfhhdsfh
hgdsjfgdsjfgdfdgfdg
gfdsahdgsdfdgfgdsg
what is to be done for acheiving this kind of target file?
"If you choose to use HTTP Header fields then you can enter Field1 to Field 6 values. This will be embeded into the HTTP request as HeaderFieldOne and so on."
can this HeaderFieldOne to HeaderFieldsix be populated with any valueslike
AS2 from: ggdhfsdf and all?
please help me out.

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Hi Kulwant,
> Is there any option in com channel to be used to populate the header fields. I can see "Define Header fields" but do not know how to use it.
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My problem: I have an applet which emulates a
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Message was edited by: Sascha Fuchs

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It is similar like in this blog:
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Hi All,
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>
sivarama krishna wrote:
> Hi All,
>
> Can anyone please explain the advantage of using this function in the receiver HTTP adapter( ie
> "Set adapter specific message attribute -> HTTP header fields (Synchronous response)")
> and how this can be implemented?
>
>
>
> Thanks in Adavnce,
> Siva
from help:
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HTTP adapter header fields

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