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10 Cards in this Set
- Front
- Back
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What is a socket?
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A socket is an interface between a user application and the operating system. Inter process communication uses sockets
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What is a port?
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Identifier for a socket on which a process is listening. 16 bit. A process can listen on more than one socket they each need their own port
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Why does the BSD socket API de ne a generic socket address structure? Give an example of
why this is useful |
It can give the operating system the ability to different addressing standards. That way the same system and calls could be used for local and internet applications and processes
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Why does the BSD socket API require that all quantities are sent in network byte order
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This allows a good interoperability between internet hosts. This way different processors can talk to eachother (ie Intel, AMD)
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1st server socket call
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create_socket:
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2nd server socket call
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bind:
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3rd server socket call
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listen:
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4th server socket call
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accept:
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Explain two di erent ways that an application protocol can use to determine how much it needs
to read from a socket in order to receive an entire message. |
variable length: read until sentinel
known length: real until number of bytes received. |
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Why do the recv() and send() socket operations need to be called in a loop by the application
protocol? |
Because there is no guarantee that you will get the entire message in one byte.
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