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Refactor variable names in SMTP client code

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The commit introduces improved variable names in the SMTP client code that are more expressive and better describe the function they perform. This is combined with corrections to some code comments. It's aimed to increase code readability and maintainability. Updates are made across the client_119.go and client.go files to ensure consistent naming conventions.
This commit is contained in:
Winni Neessen 2024-02-24 22:06:18 +01:00
parent 12a145f612
commit e1098091c3
Signed by: wneessen
GPG key ID: 5F3AF39B820C119D
4 changed files with 191 additions and 191 deletions
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284
client.go
View file

@ -87,11 +87,11 @@ type DialContextFunc func(ctx context.Context, network, address string) (net.Con
// Client is the SMTP client struct
type Client struct {
// co is the net.Conn that the smtp.Client is based on
co net.Conn
// connection is the net.Conn that the smtp.Client is based on
connection net.Conn
// Timeout for the SMTP server connection
cto time.Duration
connTimeout time.Duration
// dsn indicates that we want to use DSN for the Client
dsn bool
@ -102,8 +102,8 @@ type Client struct {
// dsnrntype defines the DSNRcptNotifyOption in case DSN is enabled
dsnrntype []string
// enc indicates if a Client connection is encrypted or not
enc bool
// isEncrypted indicates if a Client connection is encrypted or not
isEncrypted bool
// noNoop indicates the Noop is to be skipped
noNoop bool
@ -121,17 +121,17 @@ type Client struct {
port int
fallbackPort int
// sa is a pointer to smtp.Auth
sa smtp.Auth
// smtpAuth is a pointer to smtp.Auth
smtpAuth smtp.Auth
// satype represents the authentication type for SMTP AUTH
satype SMTPAuthType
// smtpAuthType represents the authentication type for SMTP AUTH
smtpAuthType SMTPAuthType
// sc is the smtp.Client that is set up when using the Dial*() methods
sc *smtp.Client
// smtpClient is the smtp.Client that is set up when using the Dial*() methods
smtpClient *smtp.Client
// Use SSL for the connection
ssl bool
useSSL bool
// tlspolicy sets the client to use the provided TLSPolicy for the STARTTLS protocol
tlspolicy TLSPolicy
@ -142,11 +142,11 @@ type Client struct {
// user is the SMTP AUTH username
user string
// dl enables the debug logging on the SMTP client
dl bool
// useDebugLog enables the debug logging on the SMTP client
useDebugLog bool
// l is a logger that implements the log.Logger interface
l log.Logger
// logger is a logger that implements the log.Logger interface
logger log.Logger
// dialContextFunc is a custom DialContext function to dial target SMTP server
dialContextFunc DialContextFunc
@ -198,13 +198,13 @@ var (
)
// NewClient returns a new Session client object
func NewClient(h string, o ...Option) (*Client, error) {
func NewClient(host string, opts ...Option) (*Client, error) {
c := &Client{
cto: DefaultTimeout,
host: h,
port: DefaultPort,
tlsconfig: &tls.Config{ServerName: h, MinVersion: DefaultTLSMinVersion},
tlspolicy: DefaultTLSPolicy,
connTimeout: DefaultTimeout,
host: host,
port: DefaultPort,
tlsconfig: &tls.Config{ServerName: host, MinVersion: DefaultTLSMinVersion},
tlspolicy: DefaultTLSPolicy,
}
// Set default HELO/EHLO hostname
@ -213,11 +213,11 @@ func NewClient(h string, o ...Option) (*Client, error) {
}
// Override defaults with optionally provided Option functions
for _, co := range o {
if co == nil {
for _, opt := range opts {
if opt == nil {
continue
}
if err := co(c); err != nil {
if err := opt(c); err != nil {
return c, fmt.Errorf("failed to apply option: %w", err)
}
}
@ -231,23 +231,23 @@ func NewClient(h string, o ...Option) (*Client, error) {
}
// WithPort overrides the default connection port
func WithPort(p int) Option {
func WithPort(port int) Option {
return func(c *Client) error {
if p < 1 || p > 65535 {
if port < 1 || port > 65535 {
return ErrInvalidPort
}
c.port = p
c.port = port
return nil
}
}
// WithTimeout overrides the default connection timeout
func WithTimeout(t time.Duration) Option {
func WithTimeout(timeout time.Duration) Option {
return func(c *Client) error {
if t <= 0 {
if timeout <= 0 {
return ErrInvalidTimeout
}
c.cto = t
c.connTimeout = timeout
return nil
}
}
@ -257,7 +257,7 @@ func WithTimeout(t time.Duration) Option {
// Deprecated: use WithSSLPort instead.
func WithSSL() Option {
return func(c *Client) error {
c.ssl = true
c.useSSL = true
return nil
}
}
@ -267,9 +267,9 @@ func WithSSL() Option {
//
// When the SSL connection fails and fallback is set to true,
// the client will attempt to connect on port 25 using plaintext.
func WithSSLPort(fb bool) Option {
func WithSSLPort(fallback bool) Option {
return func(c *Client) error {
c.SetSSLPort(true, fb)
c.SetSSLPort(true, fallback)
return nil
}
}
@ -278,26 +278,26 @@ func WithSSLPort(fb bool) Option {
// to StdErr
func WithDebugLog() Option {
return func(c *Client) error {
c.dl = true
c.useDebugLog = true
return nil
}
}
// WithLogger overrides the default log.Logger that is used for debug logging
func WithLogger(l log.Logger) Option {
func WithLogger(logger log.Logger) Option {
return func(c *Client) error {
c.l = l
c.logger = logger
return nil
}
}
// WithHELO tells the client to use the provided string as HELO/EHLO greeting host
func WithHELO(h string) Option {
func WithHELO(helo string) Option {
return func(c *Client) error {
if h == "" {
if helo == "" {
return ErrInvalidHELO
}
c.helo = h
c.helo = helo
return nil
}
}
@ -305,9 +305,9 @@ func WithHELO(h string) Option {
// WithTLSPolicy tells the client to use the provided TLSPolicy
//
// Deprecated: use WithTLSPortPolicy instead.
func WithTLSPolicy(p TLSPolicy) Option {
func WithTLSPolicy(policy TLSPolicy) Option {
return func(c *Client) error {
c.tlspolicy = p
c.tlspolicy = policy
return nil
}
}
@ -319,52 +319,52 @@ func WithTLSPolicy(p TLSPolicy) Option {
// If the connection fails with TLSOpportunistic,
// a plaintext connection is attempted on port 25 as a fallback.
// NoTLS will allways use port 25.
func WithTLSPortPolicy(p TLSPolicy) Option {
func WithTLSPortPolicy(policy TLSPolicy) Option {
return func(c *Client) error {
c.SetTLSPortPolicy(p)
c.SetTLSPortPolicy(policy)
return nil
}
}
// WithTLSConfig tells the client to use the provided *tls.Config
func WithTLSConfig(co *tls.Config) Option {
func WithTLSConfig(tlsconfig *tls.Config) Option {
return func(c *Client) error {
if co == nil {
if tlsconfig == nil {
return ErrInvalidTLSConfig
}
c.tlsconfig = co
c.tlsconfig = tlsconfig
return nil
}
}
// WithSMTPAuth tells the client to use the provided SMTPAuthType for authentication
func WithSMTPAuth(t SMTPAuthType) Option {
func WithSMTPAuth(authtype SMTPAuthType) Option {
return func(c *Client) error {
c.satype = t
c.smtpAuthType = authtype
return nil
}
}
// WithSMTPAuthCustom tells the client to use the provided smtp.Auth for SMTP authentication
func WithSMTPAuthCustom(a smtp.Auth) Option {
func WithSMTPAuthCustom(smtpAuth smtp.Auth) Option {
return func(c *Client) error {
c.sa = a
c.smtpAuth = smtpAuth
return nil
}
}
// WithUsername tells the client to use the provided string as username for authentication
func WithUsername(u string) Option {
func WithUsername(username string) Option {
return func(c *Client) error {
c.user = u
c.user = username
return nil
}
}
// WithPassword tells the client to use the provided string as password/secret for authentication
func WithPassword(p string) Option {
func WithPassword(password string) Option {
return func(c *Client) error {
c.pass = p
c.pass = password
return nil
}
}
@ -386,9 +386,9 @@ func WithDSN() Option {
// as described in the RFC 1891 and set the MAIL FROM Return option type to the
// given DSNMailReturnOption
// See: https://www.rfc-editor.org/rfc/rfc1891
func WithDSNMailReturnType(mro DSNMailReturnOption) Option {
func WithDSNMailReturnType(option DSNMailReturnOption) Option {
return func(c *Client) error {
switch mro {
switch option {
case DSNMailReturnHeadersOnly:
case DSNMailReturnFull:
default:
@ -396,7 +396,7 @@ func WithDSNMailReturnType(mro DSNMailReturnOption) Option {
}
c.dsn = true
c.dsnmrtype = mro
c.dsnmrtype = option
return nil
}
}
@ -404,13 +404,13 @@ func WithDSNMailReturnType(mro DSNMailReturnOption) Option {
// WithDSNRcptNotifyType enables the Client to request DSNs as described in the RFC 1891
// and sets the RCPT TO notify options to the given list of DSNRcptNotifyOption
// See: https://www.rfc-editor.org/rfc/rfc1891
func WithDSNRcptNotifyType(rno ...DSNRcptNotifyOption) Option {
func WithDSNRcptNotifyType(opts ...DSNRcptNotifyOption) Option {
return func(c *Client) error {
var rnol []string
var rcptOpts []string
var ns, nns bool
if len(rno) > 0 {
for _, crno := range rno {
switch crno {
if len(opts) > 0 {
for _, opt := range opts {
switch opt {
case DSNRcptNotifyNever:
ns = true
case DSNRcptNotifySuccess:
@ -422,7 +422,7 @@ func WithDSNRcptNotifyType(rno ...DSNRcptNotifyOption) Option {
default:
return ErrInvalidDSNRcptNotifyOption
}
rnol = append(rnol, string(crno))
rcptOpts = append(rcptOpts, string(opt))
}
}
if ns && nns {
@ -430,7 +430,7 @@ func WithDSNRcptNotifyType(rno ...DSNRcptNotifyOption) Option {
}
c.dsn = true
c.dsnrntype = rnol
c.dsnrntype = rcptOpts
return nil
}
}
@ -445,9 +445,9 @@ func WithoutNoop() Option {
}
// WithDialContextFunc overrides the default DialContext for connecting SMTP server
func WithDialContextFunc(f DialContextFunc) Option {
func WithDialContextFunc(dialCtxFunc DialContextFunc) Option {
return func(c *Client) error {
c.dialContextFunc = f
c.dialContextFunc = dialCtxFunc
return nil
}
}
@ -463,8 +463,8 @@ func (c *Client) ServerAddr() string {
}
// SetTLSPolicy overrides the current TLSPolicy with the given TLSPolicy value
func (c *Client) SetTLSPolicy(p TLSPolicy) {
c.tlspolicy = p
func (c *Client) SetTLSPolicy(policy TLSPolicy) {
c.tlspolicy = policy
}
// SetTLSPortPolicy overrides the current TLSPolicy with the given TLSPolicy
@ -474,22 +474,22 @@ func (c *Client) SetTLSPolicy(p TLSPolicy) {
// If the connection fails with TLSOpportunistic, a plaintext connection is
// attempted on port 25 as a fallback.
// NoTLS will allways use port 25.
func (c *Client) SetTLSPortPolicy(p TLSPolicy) {
func (c *Client) SetTLSPortPolicy(policy TLSPolicy) {
c.port = DefaultPortTLS
if p == TLSOpportunistic {
if policy == TLSOpportunistic {
c.fallbackPort = DefaultPort
}
if p == NoTLS {
if policy == NoTLS {
c.port = DefaultPort
}
c.tlspolicy = p
c.tlspolicy = policy
}
// SetSSL tells the Client wether to use SSL or not
func (c *Client) SetSSL(s bool) {
c.ssl = s
func (c *Client) SetSSL(ssl bool) {
c.useSSL = ssl
}
// SetSSLPort tells the Client wether or not to use SSL and fallback.
@ -499,124 +499,124 @@ func (c *Client) SetSSL(s bool) {
// Port 25 is used when SSL is unset (false).
// When the SSL connection fails and fb is set to true,
// the client will attempt to connect on port 25 using plaintext.
func (c *Client) SetSSLPort(ssl bool, fb bool) {
func (c *Client) SetSSLPort(ssl bool, fallback bool) {
c.port = DefaultPort
if ssl {
c.port = DefaultPortSSL
}
c.fallbackPort = 0
if fb {
if fallback {
c.fallbackPort = DefaultPort
}
c.ssl = ssl
c.useSSL = ssl
}
// SetDebugLog tells the Client whether debug logging is enabled or not
func (c *Client) SetDebugLog(v bool) {
c.dl = v
if c.sc != nil {
c.sc.SetDebugLog(v)
func (c *Client) SetDebugLog(val bool) {
c.useDebugLog = val
if c.smtpClient != nil {
c.smtpClient.SetDebugLog(val)
}
}
// SetLogger tells the Client which log.Logger to use
func (c *Client) SetLogger(l log.Logger) {
c.l = l
if c.sc != nil {
c.sc.SetLogger(l)
func (c *Client) SetLogger(logger log.Logger) {
c.logger = logger
if c.smtpClient != nil {
c.smtpClient.SetLogger(logger)
}
}
// SetTLSConfig overrides the current *tls.Config with the given *tls.Config value
func (c *Client) SetTLSConfig(co *tls.Config) error {
if co == nil {
func (c *Client) SetTLSConfig(tlsconfig *tls.Config) error {
if tlsconfig == nil {
return ErrInvalidTLSConfig
}
c.tlsconfig = co
c.tlsconfig = tlsconfig
return nil
}
// SetUsername overrides the current username string with the given value
func (c *Client) SetUsername(u string) {
c.user = u
func (c *Client) SetUsername(username string) {
c.user = username
}
// SetPassword overrides the current password string with the given value
func (c *Client) SetPassword(p string) {
c.pass = p
func (c *Client) SetPassword(password string) {
c.pass = password
}
// SetSMTPAuth overrides the current SMTP AUTH type setting with the given value
func (c *Client) SetSMTPAuth(a SMTPAuthType) {
c.satype = a
func (c *Client) SetSMTPAuth(authtype SMTPAuthType) {
c.smtpAuthType = authtype
}
// SetSMTPAuthCustom overrides the current SMTP AUTH setting with the given custom smtp.Auth
func (c *Client) SetSMTPAuthCustom(sa smtp.Auth) {
c.sa = sa
func (c *Client) SetSMTPAuthCustom(smtpAuth smtp.Auth) {
c.smtpAuth = smtpAuth
}
// setDefaultHelo retrieves the current hostname and sets it as HELO/EHLO hostname
func (c *Client) setDefaultHelo() error {
hn, err := os.Hostname()
hostname, err := os.Hostname()
if err != nil {
return fmt.Errorf("failed cto read local hostname: %w", err)
return fmt.Errorf("failed to read local hostname: %w", err)
}
c.helo = hn
c.helo = hostname
return nil
}
// DialWithContext establishes a connection cto the SMTP server with a given context.Context
func (c *Client) DialWithContext(pc context.Context) error {
ctx, cfn := context.WithDeadline(pc, time.Now().Add(c.cto))
defer cfn()
// DialWithContext establishes a connection to the SMTP server with a given context.Context
func (c *Client) DialWithContext(dialCtx context.Context) error {
ctx, cancel := context.WithDeadline(dialCtx, time.Now().Add(c.connTimeout))
defer cancel()
if c.dialContextFunc == nil {
nd := net.Dialer{}
c.dialContextFunc = nd.DialContext
netDialer := net.Dialer{}
c.dialContextFunc = netDialer.DialContext
if c.ssl {
td := tls.Dialer{NetDialer: &nd, Config: c.tlsconfig}
c.enc = true
c.dialContextFunc = td.DialContext
if c.useSSL {
tlsDialer := tls.Dialer{NetDialer: &netDialer, Config: c.tlsconfig}
c.isEncrypted = true
c.dialContextFunc = tlsDialer.DialContext
}
}
var err error
c.co, err = c.dialContextFunc(ctx, "tcp", c.ServerAddr())
c.connection, err = c.dialContextFunc(ctx, "tcp", c.ServerAddr())
if err != nil && c.fallbackPort != 0 {
// TODO: should we somehow log or append the previous error?
c.co, err = c.dialContextFunc(ctx, "tcp", c.serverFallbackAddr())
c.connection, err = c.dialContextFunc(ctx, "tcp", c.serverFallbackAddr())
}
if err != nil {
return err
}
sc, err := smtp.NewClient(c.co, c.host)
client, err := smtp.NewClient(c.connection, c.host)
if err != nil {
return err
}
if sc == nil {
if client == nil {
return fmt.Errorf("SMTP client is nil")
}
c.sc = sc
c.smtpClient = client
if c.l != nil {
c.sc.SetLogger(c.l)
if c.logger != nil {
c.smtpClient.SetLogger(c.logger)
}
if c.dl {
c.sc.SetDebugLog(true)
if c.useDebugLog {
c.smtpClient.SetDebugLog(true)
}
if err := c.sc.Hello(c.helo); err != nil {
if err = c.smtpClient.Hello(c.helo); err != nil {
return err
}
if err := c.tls(); err != nil {
if err = c.tls(); err != nil {
return err
}
if err := c.auth(); err != nil {
if err = c.auth(); err != nil {
return err
}
@ -628,7 +628,7 @@ func (c *Client) Close() error {
if err := c.checkConn(); err != nil {
return err
}
if err := c.sc.Quit(); err != nil {
if err := c.smtpClient.Quit(); err != nil {
return fmt.Errorf("failed to close SMTP client: %w", err)
}
@ -640,7 +640,7 @@ func (c *Client) Reset() error {
if err := c.checkConn(); err != nil {
return err
}
if err := c.sc.Reset(); err != nil {
if err := c.smtpClient.Reset(); err != nil {
return fmt.Errorf("failed to send RSET to SMTP client: %w", err)
}
@ -672,17 +672,17 @@ func (c *Client) DialAndSendWithContext(ctx context.Context, ml ...*Msg) error {
// checkConn makes sure that a required server connection is available and extends the
// connection deadline
func (c *Client) checkConn() error {
if c.co == nil {
if c.connection == nil {
return ErrNoActiveConnection
}
if !c.noNoop {
if err := c.sc.Noop(); err != nil {
if err := c.smtpClient.Noop(); err != nil {
return ErrNoActiveConnection
}
}
if err := c.co.SetDeadline(time.Now().Add(c.cto)); err != nil {
if err := c.connection.SetDeadline(time.Now().Add(c.connTimeout)); err != nil {
return ErrDeadlineExtendFailed
}
return nil
@ -696,12 +696,12 @@ func (c *Client) serverFallbackAddr() string {
// tls tries to make sure that the STARTTLS requirements are satisfied
func (c *Client) tls() error {
if c.co == nil {
if c.connection == nil {
return ErrNoActiveConnection
}
if !c.ssl && c.tlspolicy != NoTLS {
if !c.useSSL && c.tlspolicy != NoTLS {
est := false
st, _ := c.sc.Extension("STARTTLS")
st, _ := c.smtpClient.Extension("STARTTLS")
if c.tlspolicy == TLSMandatory {
est = true
if !st {
@ -715,11 +715,11 @@ func (c *Client) tls() error {
}
}
if est {
if err := c.sc.StartTLS(c.tlsconfig); err != nil {
if err := c.smtpClient.StartTLS(c.tlsconfig); err != nil {
return err
}
}
_, c.enc = c.sc.TLSConnectionState()
_, c.isEncrypted = c.smtpClient.TLSConnectionState()
}
return nil
}
@ -729,40 +729,40 @@ func (c *Client) auth() error {
if err := c.checkConn(); err != nil {
return fmt.Errorf("failed to authenticate: %w", err)
}
if c.sa == nil && c.satype != "" {
sa, sat := c.sc.Extension("AUTH")
if c.smtpAuth == nil && c.smtpAuthType != "" {
sa, sat := c.smtpClient.Extension("AUTH")
if !sa {
return fmt.Errorf("server does not support SMTP AUTH")
}
switch c.satype {
switch c.smtpAuthType {
case SMTPAuthPlain:
if !strings.Contains(sat, string(SMTPAuthPlain)) {
return ErrPlainAuthNotSupported
}
c.sa = smtp.PlainAuth("", c.user, c.pass, c.host)
c.smtpAuth = smtp.PlainAuth("", c.user, c.pass, c.host)
case SMTPAuthLogin:
if !strings.Contains(sat, string(SMTPAuthLogin)) {
return ErrLoginAuthNotSupported
}
c.sa = smtp.LoginAuth(c.user, c.pass, c.host)
c.smtpAuth = smtp.LoginAuth(c.user, c.pass, c.host)
case SMTPAuthCramMD5:
if !strings.Contains(sat, string(SMTPAuthCramMD5)) {
return ErrCramMD5AuthNotSupported
}
c.sa = smtp.CRAMMD5Auth(c.user, c.pass)
c.smtpAuth = smtp.CRAMMD5Auth(c.user, c.pass)
case SMTPAuthXOAUTH2:
if !strings.Contains(sat, string(SMTPAuthXOAUTH2)) {
return ErrXOauth2AuthNotSupported
}
c.sa = smtp.XOAuth2Auth(c.user, c.pass)
c.smtpAuth = smtp.XOAuth2Auth(c.user, c.pass)
default:
return fmt.Errorf("unsupported SMTP AUTH type %q", c.satype)
return fmt.Errorf("unsupported SMTP AUTH type %q", c.smtpAuthType)
}
}
if c.sa != nil {
if err := c.sc.Auth(c.sa); err != nil {
if c.smtpAuth != nil {
if err := c.smtpClient.Auth(c.smtpAuth); err != nil {
return fmt.Errorf("SMTP AUTH failed: %w", err)
}
}

16
client_119.go
View file

@ -18,7 +18,7 @@ func (c *Client) Send(ml ...*Msg) error {
for _, m := range ml {
m.sendError = nil
if m.encoding == NoEncoding {
if ok, _ := c.sc.Extension("8BITMIME"); !ok {
if ok, _ := c.smtpClient.Extension("8BITMIME"); !ok {
se := &SendError{Reason: ErrNoUnencoded, isTemp: false}
m.sendError = se
errs = append(errs, se)
@ -42,12 +42,12 @@ func (c *Client) Send(ml ...*Msg) error {
if c.dsn {
if c.dsnmrtype != "" {
c.sc.SetDSNMailReturnOption(string(c.dsnmrtype))
c.smtpClient.SetDSNMailReturnOption(string(c.dsnmrtype))
}
}
if err := c.sc.Mail(f); err != nil {
if err := c.smtpClient.Mail(f); err != nil {
se := &SendError{Reason: ErrSMTPMailFrom, errlist: []error{err}, isTemp: isTempError(err)}
if reserr := c.sc.Reset(); reserr != nil {
if reserr := c.smtpClient.Reset(); reserr != nil {
se.errlist = append(se.errlist, reserr)
}
m.sendError = se
@ -59,9 +59,9 @@ func (c *Client) Send(ml ...*Msg) error {
rse.errlist = make([]error, 0)
rse.rcpt = make([]string, 0)
rno := strings.Join(c.dsnrntype, ",")
c.sc.SetDSNRcptNotifyOption(rno)
c.smtpClient.SetDSNRcptNotifyOption(rno)
for _, r := range rl {
if err := c.sc.Rcpt(r); err != nil {
if err := c.smtpClient.Rcpt(r); err != nil {
rse.Reason = ErrSMTPRcptTo
rse.errlist = append(rse.errlist, err)
rse.rcpt = append(rse.rcpt, r)
@ -70,14 +70,14 @@ func (c *Client) Send(ml ...*Msg) error {
}
}
if failed {
if reserr := c.sc.Reset(); reserr != nil {
if reserr := c.smtpClient.Reset(); reserr != nil {
rse.errlist = append(rse.errlist, err)
}
m.sendError = rse
errs = append(errs, rse)
continue
}
w, err := c.sc.Data()
w, err := c.smtpClient.Data()
if err != nil {
se := &SendError{Reason: ErrSMTPData, errlist: []error{err}, isTemp: isTempError(err)}
m.sendError = se

16
client_120.go
View file

@ -21,7 +21,7 @@ func (c *Client) Send(ml ...*Msg) (rerr error) {
for _, m := range ml {
m.sendError = nil
if m.encoding == NoEncoding {
if ok, _ := c.sc.Extension("8BITMIME"); !ok {
if ok, _ := c.smtpClient.Extension("8BITMIME"); !ok {
m.sendError = &SendError{Reason: ErrNoUnencoded, isTemp: false}
rerr = errors.Join(rerr, m.sendError)
continue
@ -42,13 +42,13 @@ func (c *Client) Send(ml ...*Msg) (rerr error) {
if c.dsn {
if c.dsnmrtype != "" {
c.sc.SetDSNMailReturnOption(string(c.dsnmrtype))
c.smtpClient.SetDSNMailReturnOption(string(c.dsnmrtype))
}
}
if err := c.sc.Mail(f); err != nil {
if err := c.smtpClient.Mail(f); err != nil {
m.sendError = &SendError{Reason: ErrSMTPMailFrom, errlist: []error{err}, isTemp: isTempError(err)}
rerr = errors.Join(rerr, m.sendError)
if reserr := c.sc.Reset(); reserr != nil {
if reserr := c.smtpClient.Reset(); reserr != nil {
rerr = errors.Join(rerr, reserr)
}
continue
@ -58,9 +58,9 @@ func (c *Client) Send(ml ...*Msg) (rerr error) {
rse.errlist = make([]error, 0)
rse.rcpt = make([]string, 0)
rno := strings.Join(c.dsnrntype, ",")
c.sc.SetDSNRcptNotifyOption(rno)
c.smtpClient.SetDSNRcptNotifyOption(rno)
for _, r := range rl {
if err := c.sc.Rcpt(r); err != nil {
if err := c.smtpClient.Rcpt(r); err != nil {
rse.Reason = ErrSMTPRcptTo
rse.errlist = append(rse.errlist, err)
rse.rcpt = append(rse.rcpt, r)
@ -69,14 +69,14 @@ func (c *Client) Send(ml ...*Msg) (rerr error) {
}
}
if failed {
if reserr := c.sc.Reset(); reserr != nil {
if reserr := c.smtpClient.Reset(); reserr != nil {
rerr = errors.Join(rerr, reserr)
}
m.sendError = rse
rerr = errors.Join(rerr, m.sendError)
continue
}
w, err := c.sc.Data()
w, err := c.smtpClient.Data()
if err != nil {
m.sendError = &SendError{Reason: ErrSMTPData, errlist: []error{err}, isTemp: isTempError(err)}
rerr = errors.Join(rerr, m.sendError)

66
client_test.go
View file

@ -49,9 +49,9 @@ func TestNewClient(t *testing.T) {
if c.host != tt.host {
t.Errorf("failed to create new client. Host expected: %s, got: %s", host, c.host)
}
if c.cto != DefaultTimeout {
if c.connTimeout != DefaultTimeout {
t.Errorf("failed to create new client. Timeout expected: %s, got: %s", DefaultTimeout.String(),
c.cto.String())
c.connTimeout.String())
}
if c.port != DefaultPort {
t.Errorf("failed to create new client. Port expected: %d, got: %d", DefaultPort, c.port)
@ -205,8 +205,8 @@ func TestWithTimeout(t *testing.T) {
t.Errorf("failed to create new client: %s", err)
return
}
if c.cto != tt.want {
t.Errorf("failed to set custom timeout. Want: %d, got: %d", tt.want, c.cto)
if c.connTimeout != tt.want {
t.Errorf("failed to set custom timeout. Want: %d, got: %d", tt.want, c.connTimeout)
}
})
}
@ -345,8 +345,8 @@ func TestSetSSL(t *testing.T) {
return
}
c.SetSSL(tt.value)
if c.ssl != tt.value {
t.Errorf("failed to set SSL setting. Got: %t, want: %t", c.ssl, tt.value)
if c.useSSL != tt.value {
t.Errorf("failed to set SSL setting. Got: %t, want: %t", c.useSSL, tt.value)
}
})
}
@ -374,8 +374,8 @@ func TestClient_SetSSLPort(t *testing.T) {
return
}
c.SetSSLPort(tt.value, tt.fb)
if c.ssl != tt.value {
t.Errorf("failed to set SSL setting. Got: %t, want: %t", c.ssl, tt.value)
if c.useSSL != tt.value {
t.Errorf("failed to set SSL setting. Got: %t, want: %t", c.useSSL, tt.value)
}
if c.port != tt.port {
t.Errorf("failed to set SSLPort, wanted port: %d, got: %d", c.port, tt.port)
@ -460,8 +460,8 @@ func TestSetSMTPAuth(t *testing.T) {
return
}
c.SetSMTPAuth(tt.value)
if string(c.satype) != tt.want {
t.Errorf("failed to set SMTP auth type. Expected %s, got: %s", tt.want, string(c.satype))
if string(c.smtpAuthType) != tt.want {
t.Errorf("failed to set SMTP auth type. Expected %s, got: %s", tt.want, string(c.smtpAuthType))
}
})
}
@ -590,10 +590,10 @@ func TestSetSMTPAuthCustom(t *testing.T) {
return
}
c.SetSMTPAuthCustom(tt.value)
if c.sa == nil {
if c.smtpAuth == nil {
t.Errorf("failed to set custom SMTP auth method. SMTP Auth method is empty")
}
p, _, err := c.sa.Start(&si)
p, _, err := c.smtpAuth.Start(&si)
if err != nil {
t.Errorf("SMTP Auth Start() method returned error: %s", err)
}
@ -615,10 +615,10 @@ func TestClient_DialWithContext(t *testing.T) {
t.Errorf("failed to dial with context: %s", err)
return
}
if c.co == nil {
if c.connection == nil {
t.Errorf("DialWithContext didn't fail but no connection found.")
}
if c.sc == nil {
if c.smtpClient == nil {
t.Errorf("DialWithContext didn't fail but no SMTP client found.")
}
if err := c.Close(); err != nil {
@ -640,10 +640,10 @@ func TestClient_DialWithContext_Fallback(t *testing.T) {
t.Errorf("failed to dial with context: %s", err)
return
}
if c.co == nil {
if c.connection == nil {
t.Errorf("DialWithContext didn't fail but no connection found.")
}
if c.sc == nil {
if c.smtpClient == nil {
t.Errorf("DialWithContext didn't fail but no SMTP client found.")
}
if err := c.Close(); err != nil {
@ -670,10 +670,10 @@ func TestClient_DialWithContext_Debug(t *testing.T) {
t.Errorf("failed to dial with context: %s", err)
return
}
if c.co == nil {
if c.connection == nil {
t.Errorf("DialWithContext didn't fail but no connection found.")
}
if c.sc == nil {
if c.smtpClient == nil {
t.Errorf("DialWithContext didn't fail but no SMTP client found.")
}
c.SetDebugLog(true)
@ -694,10 +694,10 @@ func TestClient_DialWithContext_Debug_custom(t *testing.T) {
t.Errorf("failed to dial with context: %s", err)
return
}
if c.co == nil {
if c.connection == nil {
t.Errorf("DialWithContext didn't fail but no connection found.")
}
if c.sc == nil {
if c.smtpClient == nil {
t.Errorf("DialWithContext didn't fail but no SMTP client found.")
}
c.SetDebugLog(true)
@ -714,7 +714,7 @@ func TestClient_DialWithContextInvalidHost(t *testing.T) {
if err != nil {
t.Skipf("failed to create test client: %s. Skipping tests", err)
}
c.co = nil
c.connection = nil
c.host = "invalid.addr"
ctx := context.Background()
if err := c.DialWithContext(ctx); err == nil {
@ -730,7 +730,7 @@ func TestClient_DialWithContextInvalidHELO(t *testing.T) {
if err != nil {
t.Skipf("failed to create test client: %s. Skipping tests", err)
}
c.co = nil
c.connection = nil
c.helo = ""
ctx := context.Background()
if err := c.DialWithContext(ctx); err == nil {
@ -762,7 +762,7 @@ func TestClient_checkConn(t *testing.T) {
if err != nil {
t.Skipf("failed to create test client: %s. Skipping tests", err)
}
c.co = nil
c.connection = nil
if err := c.checkConn(); err == nil {
t.Errorf("connCheck() should fail but succeeded")
}
@ -799,10 +799,10 @@ func TestClient_DialWithContextOptions(t *testing.T) {
return
}
if !tt.sf {
if c.co == nil && !tt.sf {
if c.connection == nil && !tt.sf {
t.Errorf("DialWithContext didn't fail but no connection found.")
}
if c.sc == nil && !tt.sf {
if c.smtpClient == nil && !tt.sf {
t.Errorf("DialWithContext didn't fail but no SMTP client found.")
}
if err := c.Reset(); err != nil {
@ -1002,16 +1002,16 @@ func TestClient_DialSendCloseBroken(t *testing.T) {
return
}
if tt.closestart {
_ = c.sc.Close()
_ = c.co.Close()
_ = c.smtpClient.Close()
_ = c.connection.Close()
}
if err := c.Send(m); err != nil && !tt.sf {
t.Errorf("Send() failed: %s", err)
return
}
if tt.closeearly {
_ = c.sc.Close()
_ = c.co.Close()
_ = c.smtpClient.Close()
_ = c.connection.Close()
}
if err := c.Close(); err != nil && !tt.sf {
t.Errorf("Close() failed: %s", err)
@ -1062,16 +1062,16 @@ func TestClient_DialSendCloseBrokenWithDSN(t *testing.T) {
return
}
if tt.closestart {
_ = c.sc.Close()
_ = c.co.Close()
_ = c.smtpClient.Close()
_ = c.connection.Close()
}
if err := c.Send(m); err != nil && !tt.sf {
t.Errorf("Send() failed: %s", err)
return
}
if tt.closeearly {
_ = c.sc.Close()
_ = c.co.Close()
_ = c.smtpClient.Close()
_ = c.connection.Close()
}
if err := c.Close(); err != nil && !tt.sf {
t.Errorf("Close() failed: %s", err)