utils

func AddHeader ¶

func AddHeader(data []byte, key string, val string) []byte

AddHeader adds a header to a request/response. The data array requires a valid format validated with IsRequest() or IsResponse().

func CreateResponse ¶

func CreateResponse(code int, message string, body []byte) []byte

CreateResponse returns a full http response with custom response code and body. The content-length header is set dynamically matching the body length.

func GenerateRandomBytes ¶

func GenerateRandomBytes(n int) ([]byte, error)

func GenerateRandomHash ¶

func GenerateRandomHash() string

func GenerateRandomInt ¶

func GenerateRandomInt() int

func GetHeaderFieldName ¶

func GetHeaderFieldName(headerLine []byte) []byte

func GetHeaderFieldValues ¶

func GetHeaderFieldValues(data []byte, key []byte) [][]byte

GetHeaderFieldValues returns an array with all values of headers with the matching field value.

func IsRequest ¶

func IsRequest(data []byte) bool

IsRequest checks whether a data array has a valid http request format. It considers the request line, lines separated by \r\n and the occurance of \r\n\r\n.

func IsResponse ¶

func IsResponse(data []byte) bool

func IsValidHeader ¶

func IsValidHeader(data []byte) bool

func ReadByContentLength ¶

func ReadByContentLength(reader *bufio.Reader, n int) ([]byte, error)

ReadByContentLength reads from a stream expecting a fixed size.

func ReadChunks ¶

func ReadChunks(reader *bufio.Reader) ([]byte, error)

ReadChunks reads from a stream expecting a chunked encoded http body.

func ReadHTTPBody ¶

func ReadHTTPBody(br *bufio.Reader, data []byte, modifyHeaders bool) ([]byte, error)

ReadHTTPBody reads the expected body of an http stream. The data parameter must contain the previously received headers.

func ReadUntilBytes ¶

func ReadUntilBytes(br *bufio.Reader, delim []byte) ([]byte, error)

ReadUntilBytes reads from a stream until the occurance of the delimiter.

func RemoveHeader ¶

func RemoveHeader(data []byte, key string, index int) []byte

RemoveHeader removes a header with a certain key. If index is 0, all headers with the matching key will be removed. If index is > 0, only the nth occurance of the header will be removed.

func SetHeaderValue ¶

func SetHeaderValue(data []byte, key string, val string, index int) []byte

SetHeaderValue replaces the value of header with a certain key. If index is 0, all headers with the matching key will be modified. If index is > 0, only the nth occurance of the header will be modified.

func Tunnel ¶

func Tunnel(connIn net.Conn, connOut net.Conn)

Tunnel reads incoming data from one connection and forwards to another connection