github.com/kaydxh/golang@v0.0.131/go/net/http/http_transport.host.go (about)

     1  /*
     2   *Copyright (c) 2023, kaydxh
     3   *
     4   *Permission is hereby granted, free of charge, to any person obtaining a copy
     5   *of this software and associated documentation files (the "Software"), to deal
     6   *in the Software without restriction, including without limitation the rights
     7   *to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     8   *copies of the Software, and to permit persons to whom the Software is
     9   *furnished to do so, subject to the following conditions:
    10   *
    11   *The above copyright notice and this permission notice shall be included in all
    12   *copies or substantial portions of the Software.
    13   *
    14   *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    15   *IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    16   *FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    17   *AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    18   *LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    19   *OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    20   *SOFTWARE.
    21   */
    22  package http
    23  
    24  import (
    25  	"net/http"
    26  
    27  	resolve_ "github.com/kaydxh/golang/go/net/resolver/resolve"
    28  	logs_ "github.com/kaydxh/golang/pkg/logs"
    29  )
    30  
    31  func RequestWithContextTargetHost(req *http.Request, target *Host) *http.Request {
    32  	if target == nil {
    33  		return req
    34  	}
    35  	return req.WithContext(WithContextHost(req.Context(), target))
    36  }
    37  
    38  func TargetHostFuncFromContext(req *http.Request) error {
    39  	host := FromContextHost(req.Context())
    40  	if host == nil || host.HostTarget == "" {
    41  		return nil
    42  	}
    43  
    44  	if req.URL == nil {
    45  		return nil
    46  	}
    47  
    48  	if host.HostTarget == "" {
    49  		return nil
    50  	}
    51  
    52  	// replace host of host if target of host if resolved
    53  	address, err := resolve_.ResolveOne(req.Context(), host.HostTarget)
    54  	if err != nil {
    55  		return err
    56  	}
    57  	if address.Addr != "" {
    58  		req.URL.Host = address.Addr
    59  	}
    60  	host.HostTargetAddrResolved = address
    61  	if host.ReplaceHostInRequest {
    62  		req.Host = req.URL.Host
    63  	}
    64  	return nil
    65  }
    66  
    67  func RoundTripperWithTarget(rt http.RoundTripper) http.RoundTripper {
    68  	return RoundTripFunc(func(req *http.Request) (resp *http.Response, err error) {
    69  
    70  		logger := logs_.GetLogger(req.Context())
    71  		defer func() {
    72  			logger.Infof("http request host: %v", req.Host)
    73  		}()
    74  		err = TargetHostFuncFromContext(req)
    75  		if err != nil {
    76  			return nil, err
    77  		}
    78  		return rt.RoundTrip(req)
    79  	})
    80  }
    81  
    82  var DefaultTransportInsecureWithHost = RoundTripperWithTarget(DefaultTransportInsecure)