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# File 'lib/http_streaming_client/client.rb', line 119
def request(method, uri, opts = {}, &block)
logger.debug("Client::request:#{method}:#{uri}:#{opts}")
if uri.is_a?(String)
uri = URI.parse(uri)
end
@reconnect_count = 0 if @reconnect_requested
@options_factory = opts.delete(:options_factory)
@static_body_option = opts[:body]
begin
opts[:body] = @static_body_option unless @static_body_option.nil?
if !@options_factory.nil? then
if @options_factory.respond_to? "get_options" then
logger.debug("Client::request:options_factory detected")
generated_options = @options_factory.get_options
logger.debug("Client::request:options_factory:#{generated_options}")
opts.merge!(generated_options || {})
else
logger.warn("Client::request:options_factory detected, but does not respond to get_options(). Ignoring.")
end
end
= {
"User-Agent" => opts["User-Agent"] || "HttpStreamingClient #{HttpStreamingClient::VERSION}",
"Accept" => "*/*",
"Accept-Charset" => "utf-8"
}
if method == "POST" || method == "PUT"
["Content-Type"] = opts["Content-Type"] || "application/x-www-form-urlencoded;charset=UTF-8"
body = opts.delete(:body)
if body.is_a?(Hash)
body = body.keys.collect {|param| "#{URI.escape(param.to_s)}=#{URI.escape(body[param].to_s)}"}.join('&')
end
["Content-Length"] = body.length
end
unless uri.userinfo.nil?
["Authorization"] = "Basic #{[uri.userinfo].pack('m').strip!}\r\n"
end
encodings = []
encodings << "gzip" if (@compression_requested and opts[:compression].nil?) or opts[:compression]
if encodings.any?
["Accept-Encoding"] = "#{encodings.join(',')}"
end
= .merge(opts[:headers] || {})
logger.debug "request headers: #{}"
socket = initialize_socket(uri, opts)
logger.info("Connected to #{uri}")
request = "#{method} #{uri.path}#{uri.query ? "?"+uri.query : nil} HTTP/1.1\r\n"
request << "Host: #{uri.host}\r\n"
.each do |k, v|
request << "#{k}: #{v}\r\n"
end
request << "\r\n"
if method == "POST"
request << body
end
socket.write(request)
response_head = {}
response_head[:headers] = {}
socket.each_line do |line|
if line == "\r\n" then
break
else
= line.split(": ")
if .size == 1
= [0].split(" ")
response_head[:version] = [0]
response_head[:code] = [1].to_i
response_head[:msg] = [2]
logger.debug "HTTP response code is #{response_head[:code]}"
else
response_head[:headers][([0])] = [1].strip
end
end
end
logger.debug "response headers:#{response_head[:headers]}"
if response_head[:code] == 301 then
location = response_head[:headers]["Location"]
raise InvalidRedirect, "Unable to find Location header for HTTP 301 response" if location.nil?
logger.warn "Received HTTP 301 redirect to #{location}, following..."
socket.close if !socket.nil? and !socket.closed?
opts.delete(:socket)
return request(method, location, opts, &block)
end
content_length = response_head[:headers]["Content-Length"].to_i
logger.debug "content-length: #{content_length}"
content_type = response_head[:headers]["Content-Type"].split(';').first
logger.debug "content-type: #{content_type}"
response_compression = false
if ALLOWED_MIME_TYPES.include?(content_type)
case response_head[:headers]["Content-Encoding"]
when "gzip"
response_compression = true
end
else
raise InvalidContentType, "invalid response MIME type: #{content_type}"
end
if (response_head[:code] != 200)
s = "Received HTTP #{response_head[:code]} response"
logger.debug "request: #{request}"
response = socket.read(content_length)
logger.debug "response: #{response}"
raise HttpError.new(response_head[:code], "Received HTTP #{response_head[:code]} response", response_head[:headers], response)
end
if response_head[:headers]["Transfer-Encoding"] == 'chunked'
partial = nil
decoder = nil
response = ""
if response_compression then
logger.debug "chunked transfer encoding with compression detected"
if block_given? then
decoder = HttpStreamingClient::Decoders::GZip.new { |line|
logger.debug "read #{line.size} uncompressed bytes, decoder queue bytes:#{decoder.size}"
block.call(line) unless @interrupted }
else
decoder = HttpStreamingClient::Decoders::GZip.new { |line|
logger.debug "read #{line.size} uncompressed bytes, #{response.size} bytes total, decoder queue bytes:#{decoder.size}"
response << line unless @interrupted }
end
else
logger.debug "chunked transfer encoding with no compression detected"
if block_given? then
decoder = HttpStreamingClient::Decoders::Chunked.new { |line|
logger.debug "read #{line.size} uncompressed bytes, decoder queue bytes:#{decoder.size}"
block.call(line) unless @interrupted }
else
decoder = HttpStreamingClient::Decoders::Chunked.new { |line|
logger.debug "read #{line.size} uncompressed bytes, #{response.size} bytes total, decoder queue bytes:#{decoder.size}"
response << line unless @interrupted }
end
end
while !socket.eof? && (line = socket.gets)
chunkLeft = 0
if line.match /^0\r\n/ then
logger.debug "received zero length chunk, chunked encoding EOF"
logger.debug "EOF line: #{line}"
break
end
next if line == "\r\n"
size = line.hex
logger.debug "chunk size:#{size}"
partial = socket.read(size)
next if partial.nil?
remaining = size-partial.size
logger.debug "read #{partial.size} bytes, #{remaining} bytes remaining"
until remaining == 0
partial << socket.read(remaining)
remaining = size-partial.size
logger.debug "read #{partial.size} bytes, #{remaining} bytes remaining"
end
decoder << partial
if !block_given? then
logger.debug "no block specified, returning chunk results and halting streaming response"
decoder << "\n" if !response_compression and decoder.size > 0
return response
else
if @interrupted then
return if response_compression
decoder << "\n" if !response_compression and decoder.size > 0
return response
end
end
end
logger.debug "socket EOF detected" if socket.eof?
raise ReconnectRequest if @reconnect_requested
decoder << "\n" if !response_compression and decoder.size > 0
return response
else
if content_length > 0 then
bits = socket.read(content_length)
logger.debug "read #{content_length} bytes"
return bits if !response_compression
logger.debug "response compression detected"
begin
decoder = Zlib::GzipReader.new(StringIO.new(bits))
return decoder.read
rescue Zlib::Error
raise DecoderError
end
end
if response_compression then
logger.debug "response compression detected"
decoder = nil
response = ""
if block_given? then
decoder = HttpStreamingClient::Decoders::GZip.new { |line|
logger.debug "read #{line.size} uncompressed bytes, decoder queue bytes:#{decoder.size}"
block.call(line) unless @interrupted }
else
decoder = HttpStreamingClient::Decoders::GZip.new { |line|
logger.debug "read #{line.size} uncompressed bytes, #{response.size} bytes total, decoder queue bytes:#{decoder.size}"
response << line unless @interrupted }
end
while (!socket.eof? and !(line = socket.read_nonblock(2048)).nil?)
logger.debug "read compressed line, #{line.size} bytes"
decoder << line
break response if @interrupted
end
logger.debug "EOF detected"
raise ReconnectRequest if @reconnect_requested
return response
else
response = ""
while (!socket.eof? and !(line = socket.readline).nil?)
if block_given? then
yield line
logger.debug "read #{line.size} bytes"
else
logger.debug "read #{line.size} bytes, #{response.size} bytes total"
response << line
end
break if @interrupted
end
raise ReconnectRequest if @reconnect_requested
return response
end
end
rescue => e
return if @interrupted
logger.error "Error Detected: #{e}" unless e.instance_of? ReconnectRequest
decoder.close if !decoder.nil?
socket.close if !socket.nil? and !socket.closed?
opts.delete(:socket)
if @reconnect_requested then
logger.info "Connection closed. Reconnect requested. Trying..."
@reconnect_count = @reconnect_count + 1
logger.info "Reconnect attempt #{@reconnect_count} of #{@reconnect_attempts}, sleeping for #{@reconnect_interval} seconds..."
sleep @reconnect_interval
retry if @reconnect_count < @reconnect_attempts
logger.info "Maximum number of failed reconnect attempts reached (#{@reconnect_attempts}). Exiting."
end
raise e unless e.instance_of? ReconnectRequest
end
ensure
logger.debug "ensure socket closed"
decoder.close if !decoder.nil?
socket.close if !socket.nil? and !socket.closed?
opts.delete(:socket)
end
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