implemented responses for PUT and OPTIONS

internal/http/Connection.go

@@ -92,7 +92,7 @@ func (conn *Connection) Start() {
 			conn.log.Info(req.Method, " ", req.Url, " ", req.Protocol)
 			conn.log.Trace("request headers: ", HeadersToString(req.Headers, SecretHeaders))
 			res = conn.callback(req)
-			if req.HasUnreadBody() {
+			if !res.CloseConnection && req.HasUnreadBody() {
 				res = conn.CreateErrorResponse(req, true, ErrHasUnreadBody)
 			}
 		}
@@ -107,7 +107,7 @@ func (conn *Connection) Start() {
 		}
 
 		// it is set by CreateResponse
-		if res.Headers["connection"] == "close" {
+		if res.CloseConnection {
 			conn.lingeringClose()
 			return
 		}

internal/http/Request.go

@@ -3,6 +3,7 @@ package http
 import (
 	"fmt"
 	"io"
+	"math"
 	"net/url"
 	sh "serveg/internal/string_helper"
 	"strconv"
@@ -104,20 +105,26 @@ func (req *Request) HasUnreadBody() bool {
 	return req.bodyReader.N > 0
 }
 
+// maxBodyLen: pass -1 to disable limit
+// returns HttpError
 func (req *Request) GetBodyReader(maxBodyLen int64) (io.Reader, error) {
+	if maxBodyLen < 0 {
+		maxBodyLen = math.MaxInt64
+	}
 	if req.ContentLength > maxBodyLen {
 		return nil, NewHttpError(StatusRequestEntityTooLarge,
-			fmt.Sprintf("content-length %d > maxBodyLen %d",
+			fmt.Sprintf("content-length (%d) > maxBodyLen (%d)",
 				req.ContentLength, maxBodyLen))
 	}
+	if req.ContentLength == 0 {
+		// body reader with N=0 is a valid reader that just returns EOF
+		return &req.bodyReader, nil
+	}
 	if !req.HasUnreadBody() {
 		return nil, ErrBodyHasBeenAlreadyRead
 	}
 
-	if req.ContentLength != 0 {
-		// body reader with N=0 is a valid reader that just returns EOF
-		req.bodyReader.N = min(req.bodyReader.N, maxBodyLen)
-	}
+	req.bodyReader.N = min(req.bodyReader.N, maxBodyLen)
 	return &req.bodyReader, nil
 }
 

internal/http/Response.go

@@ -24,6 +24,8 @@ type Response struct {
 	Status     StatusCode
 	// keys are in lower case
 	Headers HeadersMap
+	// close connection after sending response
+	CloseConnection bool
 	// don't add body and content-* headers for HEAD request
 	omitBody bool
 	bodySize int64
@@ -42,6 +44,7 @@ func (res *Response) reset() {
 	res.needsReset = false
 	res.Status = StatusNotInitialized
 	clear(res.Headers)
+	res.CloseConnection = false
 	res.omitBody = false
 	res.bodySize = 0
 	res.bodyType = responseBodyEmpty
@@ -74,6 +77,7 @@ func (conn *Connection) CreateResponse(status StatusCode, req *Request, wantsClo
 	}
 
 	if wantsClose || !req.WantsKeepAlive {
+		res.CloseConnection = true
 		res.Headers["connection"] = "close"
 	} else if req.Protocol == "HTTP/1.0" {
 		res.Headers["connection"] = "keep-alive"

internal/http/StatusCodes.go

@@ -18,6 +18,7 @@ func (c StatusCode) String() string {
 
 // HTTP status codes as registered with IANA.
 // See: https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
+// Details: https://en.wikipedia.org/wiki/List_of_HTTP_status_codes
 const (
 	StatusNotInitialized     StatusCode = 0   // for Response.reset
 	StatusContinue           StatusCode = 100 // RFC 9110, 15.2.1