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httpTransport.go
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httpTransport.go
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package sentry
import (
"bytes"
"compress/zlib"
"crypto/tls"
"encoding/base64"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"log"
"net/http"
"github.com/certifi/gocertifi"
"github.com/pkg/errors"
)
const (
// ErrMissingRootTLSCerts is used when this library cannot load the required
// RootCA certificates needed for its HTTPS transport.
ErrMissingRootTLSCerts = ErrType("sentry: Failed to load root TLS certificates")
)
type httpTransport struct {
client *http.Client
}
func newHTTPTransport() Transport {
t := &httpTransport{
client: http.DefaultClient,
}
rootCAs, err := gocertifi.CACerts()
if err != nil {
log.Println(ErrMissingRootTLSCerts.Error())
return t
}
t.client = &http.Client{
Transport: &http.Transport{
Proxy: http.ProxyFromEnvironment,
TLSClientConfig: &tls.Config{RootCAs: rootCAs},
},
}
return t
}
func (t *httpTransport) Send(dsn string, packet Packet) error {
if dsn == "" {
return nil
}
url, authHeader, err := t.parseDSN(dsn)
if err != nil {
return errors.Wrap(err, "failed to parse DSN")
}
body, contentType, err := t.serializePacket(packet)
if err != nil {
return errors.Wrap(err, "failed to serialize packet")
}
req, err := http.NewRequest("POST", url, body)
if err != nil {
return errors.Wrap(err, "failed to create new request")
}
req.Header.Set("X-Sentry-Auth", authHeader)
req.Header.Set("Content-Type", contentType)
req.Header.Set("User-Agent", fmt.Sprintf("sentry-go %s (Sierra Softworks; github.com/SierraSoftworks/sentry-go)", version))
res, err := t.client.Do(req)
if err != nil {
return errors.Wrap(err, "failed to submit request")
}
io.Copy(ioutil.Discard, res.Body)
res.Body.Close()
if res.StatusCode != 200 {
return errors.Errorf("got http status %d, expected 200", res.StatusCode)
}
return nil
}
func (t *httpTransport) parseDSN(dsn string) (url, authHeader string, err error) {
d, err := newDSN(dsn)
if err != nil {
return "", "", err
}
return d.URL, d.AuthHeader(), nil
}
func (t *httpTransport) serializePacket(packet Packet) (io.Reader, string, error) {
buf := bytes.NewBuffer([]byte{})
if err := json.NewEncoder(buf).Encode(packet); err != nil {
return nil, "", errors.Wrap(err, "failed to encode JSON payload data")
}
if buf.Len() < 1000 {
return buf, "application/json; charset=utf8", nil
}
cbuf := bytes.NewBuffer([]byte{})
b64 := base64.NewEncoder(base64.StdEncoding, cbuf)
deflate, err := zlib.NewWriterLevel(b64, zlib.BestCompression)
if err != nil {
return nil, "", errors.Wrap(err, "failed to configure zlib deflate")
}
if _, err := io.Copy(deflate, buf); err != nil {
return nil, "", errors.Wrap(err, "failed to deflate message")
}
deflate.Close()
b64.Close()
return cbuf, "application/octet-stream", nil
}