type
WebClient
The WebClient
class is used to manage client side HTTP requests and responses. The basic lifecycle of WebClient:
- configure request fields such as
reqUri
,reqMethod
, andreqHeaders
- send request headers via
writeReq
- optionally write request body via
reqOut
- read response status and headers via
readRes
- process response fields such as
resCode
andresHeaders
- optionally read response body via
resIn
Using the low level methods writeReq
and readRes
enables HTTP pipelining (multiple requests and responses on the same TCP socket connection). There are also a series of convenience methods which make common cases easier.
constructors
make |
Construct with optional request URI. |
---|
fields
cookies |
Cookies to pass for "Cookie" request header. |
---|---|
followRedirects |
When set to true a 3xx response with a Location header will automatically update the |
proxy |
If non-null, then all requests are routed through this proxy address (host and port). |
reqHeaders |
The HTTP headers to use for the next request. |
reqMethod |
The HTTP method for the request. |
reqUri |
The absolute URI of request. |
reqVersion |
HTTP version to use for request must be 1.0 or 1.1. |
resCode |
HTTP status code returned by response. |
resHeaders |
HTTP headers returned by response. |
resPhrase |
HTTP status reason phrase returned by response. |
resVersion |
HTTP version returned by response. |
socketConfig |
The |
methods
authBasic |
Authenticate request using HTTP Basic with given username and password. |
---|---|
close |
Close the HTTP request and the underlying socket. |
getBuf |
Make a GET request and return the response content as an in-memory byte buffer. |
getIn |
Make a GET request and return the input stream to the response or throw IOErr if response is not 200. |
getStr |
Make a GET request and return the response content as an in-memory string. |
isConnected |
Return if this web client is currently connected to the remote host. |
postBuf |
Convenience for |
postFile |
Convenience for |
postForm |
Convenience for |
postStr |
Convenience for |
readRes |
Read the response status line and response headers. |
reqOut |
Get the output stream used to write the request body. |
resBuf |
Return the entire response back as an in-memory byte buffer. |
resHeader |
Get a response header. |
resIn |
Input stream to read response content. |
resStr |
Return the entire response back as an in-memory string. |
socketOptions | |
writeBuf |
Write a binary buffer using the given HTTP method to the URI. |
writeFile |
Write a file using the given HTTP method to the URI. |
writeForm |
Make a request with the given HTTP method to the URI with the given form data. |
writeReq |
Write the request line and request headers. |
writeStr |
Make a request with the given HTTP method to the URI using UTF-8 encoding of given string. |
Slot Details
authBasic
close
cookies
src
Cookie[] cookies := Cookie#.emptyList
Cookies to pass for "Cookie" request header. If set to an empty list then the "Cookie" request header is removed. After a request has been completed if the "Set-Cookie" response header specified one or more cookies then this field is automatically updated with the server specified cookies.
followRedirects
getBuf
getIn
getStr
isConnected
make
postBuf
postFile
postForm
postStr
proxy
readRes
Read the response status line and response headers. This method may be called after the request has been written via writeReq
and reqOut
. Once this method completes the response status and headers are available. If there is a response body, it is available for reading via resIn
. Throw IOErr if there is a network or protocol error. Return this.
reqHeaders
reqMethod
reqOut
Get the output stream used to write the request body. This stream is only available if the request headers included a "Content-Type" header. If an explicit "Content-Length" was specified then this is a fixed length output stream, otherwise the request is automatically configured to use a chunked transfer encoding. This stream should be closed once the content has been fully written.
reqUri
reqVersion
resBuf
resCode
resHeader
resHeaders
resIn
Input stream to read response content. The input stream will correctly handle end of stream when the content has been fully read. If the "Content-Length" header was specified the end of stream is based on the fixed number of bytes. If the "Transfer-Encoding" header defines a chunked encoding, then chunks are automatically handled. If the response has no content body, then throw IOErr.
The response input stream is automatically configured with the correct character encoding if one is specified in the "Content-Type" response header.
resPhrase
resStr
resVersion
socketConfig
src
SocketConfig socketConfig := SocketConfig.cur
The SocketConfig
to use for creating sockets
socketOptions
src
@Deprecated { msg=... }
SocketOptions socketOptions()
writeBuf
src
This writeBuf(Str method, Buf content)
Write a binary buffer using the given HTTP method to the URI. If Content-Type header is not already set, then it is set as ""application/octet-stream". This method does not support the "Expect" header
writeFile
src
This writeFile(Str method, File file)
Write a file using the given HTTP method to the URI. If Content-Type header is not already set, then it is set from the file extension's MIME type. This method does not support the "Expect" header (it writes full file before reading response). Should primarily be used for "POST" and "PATCH" requests.
writeForm
src
This writeForm(Str method, Str:Str form)
Make a request with the given HTTP method to the URI with the given form data. Set the Content-Type to application/x-www-form-urlencoded. This method does not support the "Expect" header (it writes all form data before reading response). Should primarily be used for POST and PATCH requests.
writeReq
writeStr
src
This writeStr(Str method, Str content)
Make a request with the given HTTP method to the URI using UTF-8 encoding of given string. If Content-Type is not already set, then set it to "text/plain; charset=utf-8". This method does not support the "Expect" header (it writes full string before reading response). Should primarily be used for "POST" and "PATCH" requests.