Server-side http General form of http response/request GET request method POST request method Responses Servlet support.

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Server-side http General form of http response/request GET request method POST request method Responses Servlet support

Server-side http General form of http response/request GET request method POST request method Responses Servlet support

http request/response client –opens connection on a tcp/ip socket –acquires input and output streams is=socket.getInputStream(), os=socket.getOutputStream() –sends request on os awaits response on is

http request/response client server –sends a single response with headers describing success or failure status content format … –followed by body

Server-side http General form of http response/request GET request method POST request method Responses Servlet support

GET Request URL protocolserver DNS addrresource identifier GET /index.html/ HTTP/1.1 GET / /

GET request Resource identifier may include cgi-style arguments &displayFormat=XML It is server's responsibility to parse this and do something meaningful Java servlet interface has support for the parsing

Server-side http General form of http response/request GET request method POST request method Responses Servlet support

http POST Support for large data to be sent to server No specification for query format Increasingly common to POST XML with query syntax More generally POST XML with message syntax, e.g. SOAP

Server-side http General form of http response/request GET request method POST request method Responses Servlet support

Server-side http General form of http response/request GET request method POST request method Responses Servlet support