forked from cerc-io/plugeth
289b30715d
This commit converts the dependency management from Godeps to the vendor folder, also switching the tool from godep to trash. Since the upstream tool lacks a few features proposed via a few PRs, until those PRs are merged in (if), use github.com/karalabe/trash. You can update dependencies via trash --update. All dependencies have been updated to their latest version. Parts of the build system are reworked to drop old notions of Godeps and invocation of the go vet command so that it doesn't run against the vendor folder, as that will just blow up during vetting. The conversion drops OpenCL (and hence GPU mining support) from ethash and our codebase. The short reasoning is that there's noone to maintain and having opencl libs in our deps messes up builds as go install ./... tries to build them, failing with unsatisfied link errors for the C OpenCL deps. golang.org/x/net/context is not vendored in. We expect it to be fetched by the user (i.e. using go get). To keep ci.go builds reproducible the package is "vendored" in build/_vendor.
84 lines
2.5 KiB
Go
84 lines
2.5 KiB
Go
package ssdp
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import (
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"errors"
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"log"
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"net/http"
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"net/url"
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"strconv"
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"time"
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"github.com/huin/goupnp/httpu"
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)
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const (
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ssdpDiscover = `"ssdp:discover"`
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ntsAlive = `ssdp:alive`
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ntsByebye = `ssdp:byebye`
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ntsUpdate = `ssdp:update`
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ssdpUDP4Addr = "239.255.255.250:1900"
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ssdpSearchPort = 1900
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methodSearch = "M-SEARCH"
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methodNotify = "NOTIFY"
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)
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// SSDPRawSearch performs a fairly raw SSDP search request, and returns the
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// unique response(s) that it receives. Each response has the requested
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// searchTarget, a USN, and a valid location. maxWaitSeconds states how long to
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// wait for responses in seconds, and must be a minimum of 1 (the
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// implementation waits an additional 100ms for responses to arrive), 2 is a
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// reasonable value for this. numSends is the number of requests to send - 3 is
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// a reasonable value for this.
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func SSDPRawSearch(httpu *httpu.HTTPUClient, searchTarget string, maxWaitSeconds int, numSends int) ([]*http.Response, error) {
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if maxWaitSeconds < 1 {
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return nil, errors.New("ssdp: maxWaitSeconds must be >= 1")
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}
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seenUsns := make(map[string]bool)
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var responses []*http.Response
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req := http.Request{
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Method: methodSearch,
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// TODO: Support both IPv4 and IPv6.
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Host: ssdpUDP4Addr,
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URL: &url.URL{Opaque: "*"},
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Header: http.Header{
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// Putting headers in here avoids them being title-cased.
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// (The UPnP discovery protocol uses case-sensitive headers)
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"HOST": []string{ssdpUDP4Addr},
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"MX": []string{strconv.FormatInt(int64(maxWaitSeconds), 10)},
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"MAN": []string{ssdpDiscover},
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"ST": []string{searchTarget},
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},
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}
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allResponses, err := httpu.Do(&req, time.Duration(maxWaitSeconds)*time.Second+100*time.Millisecond, numSends)
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if err != nil {
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return nil, err
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}
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for _, response := range allResponses {
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if response.StatusCode != 200 {
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log.Printf("ssdp: got response status code %q in search response", response.Status)
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continue
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}
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if st := response.Header.Get("ST"); st != searchTarget {
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log.Printf("ssdp: got unexpected search target result %q", st)
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continue
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}
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location, err := response.Location()
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if err != nil {
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log.Printf("ssdp: no usable location in search response (discarding): %v", err)
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continue
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}
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usn := response.Header.Get("USN")
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if usn == "" {
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log.Printf("ssdp: empty/missing USN in search response (using location instead): %v", err)
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usn = location.String()
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}
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if _, alreadySeen := seenUsns[usn]; !alreadySeen {
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seenUsns[usn] = true
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responses = append(responses, response)
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}
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}
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return responses, nil
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}
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