Question on Ethernet-Shield / datatypes

Projects Networking, Protocols, and Devices
1

Hello, i am new on this forum but have the following problem:

The EthernetServer Object has a "write" Method, which accepts only 1 Byte Arguments, such as char. Sending with that write Method works fine, but results in only one Byte in a TCP-packet, which makes communication slow and produces a lot of IP overhead.

With the "print" Method, whole up to 255 bytes can be send in one packet, but it terminates if a 0 value occurs. Therefore this Method is not suitable for transmitting jpg files e.g.

My question is: How to send more then one byte per tcp packet ???

2

EthernetServer.write() also supports the form:

size_t EthernetServer::write(const uint8_t *buffer, size_t size)

(from EthernetServer.cpp)

So you can send a byte array.

3

Thank you very much

can't help wondering, why that feature isn't mentioned in the reference at all ?!

4

can't help wondering, why that feature isn't mentioned in the reference at all ?!

Are you volunteering? Developing documentation is a thankless job that no one really wants to do or maintain.

5

The documentation was changed recently for IDE v1.0.1, so there were errors and omissions. They will change it if you submit a request here.
http://code.google.com/p/arduino/
It would be good for you to submit it. It is not difficult.

Here is one I submitted there, and it has been corrected, even tho it shows the status as "started".
http://code.google.com/p/arduino/issues/detail?id=880

edit: It was a bit technical for a new guy, so the request is posted:
http://code.google.com/p/arduino/issues/detail?id=1034
I knew where the functions were in the header files.