-
Notifications
You must be signed in to change notification settings - Fork 13
/
tcp_client.go
221 lines (202 loc) · 6.61 KB
/
tcp_client.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
/**********************************************************\
| |
| hprose |
| |
| Official WebSite: http://www.hprose.com/ |
| http://www.hprose.org/ |
| |
\**********************************************************/
/**********************************************************\
* *
* hprose/tcp_client.go *
* *
* hprose tcp client for Go. *
* *
* LastModified: May 27, 2015 *
* Authors: Ma Bingyao <andot@hprose.com> *
* Ore_Ash <nanohugh@gmail.com> *
* *
\**********************************************************/
package hprose
import (
"crypto/tls"
"net"
"net/url"
"time"
)
// TcpClient is hprose tcp client
type TcpClient struct {
*StreamClient
keepAlive interface{}
keepAlivePeriod interface{}
linger interface{}
noDelay interface{}
tlsConfig *tls.Config
}
type tcpTransporter struct {
ConnPool
*TcpClient
}
var globalTcpConnPool = NewStreamConnPool(64)
// NewTcpClient is the constructor of TcpClient
func NewTcpClient(uri string) (client *TcpClient) {
trans := new(tcpTransporter)
trans.ConnPool = globalTcpConnPool
client = new(TcpClient)
client.StreamClient = newStreamClient(trans)
client.Client = client
trans.TcpClient = client
client.SetUri(uri)
return
}
func newTcpClient(uri string) Client {
return NewTcpClient(uri)
}
// SetConnPool can set separate StreamConnPool for the client
func (client *TcpClient) SetConnPool(connPool ConnPool) {
client.Transporter.(*tcpTransporter).ConnPool = connPool
}
// SetUri set the uri of hprose client
func (client *TcpClient) SetUri(uri string) {
if u, err := url.Parse(uri); err == nil {
if u.Scheme != "tcp" && u.Scheme != "tcp4" && u.Scheme != "tcp6" {
panic("This client desn't support " + u.Scheme + " scheme.")
}
}
client.Close()
client.BaseClient.SetUri(uri)
}
// Close the client
func (client *TcpClient) Close() {
uri := client.Uri()
if uri != "" {
client.Transporter.(*tcpTransporter).ConnPool.Close(uri)
}
}
// Timeout return the timeout of the connection in client pool
func (client *TcpClient) Timeout() time.Duration {
return client.Transporter.(*tcpTransporter).ConnPool.Timeout()
}
// SetTimeout for connection in client pool
func (client *TcpClient) SetTimeout(d time.Duration) {
client.timeout = d
client.Transporter.(*tcpTransporter).ConnPool.SetTimeout(d)
}
// SetKeepAlive sets whether the operating system should send keepalive messages on the connection.
func (client *TcpClient) SetKeepAlive(keepalive bool) {
client.keepAlive = keepalive
}
// SetKeepAlivePeriod sets period between keep alives.
func (client *TcpClient) SetKeepAlivePeriod(d time.Duration) {
client.keepAlivePeriod = d
}
// SetLinger sets the behavior of Close on a connection which still has data waiting to be sent or to be acknowledged.
//
// If sec < 0 (the default), the operating system finishes sending the data in the background.
//
// If sec == 0, the operating system discards any unsent or unacknowledged data.
//
// If sec > 0, the data is sent in the background as with sec < 0. On some operating systems after sec seconds have elapsed any remaining unsent data may be discarded.
func (client *TcpClient) SetLinger(sec int) {
client.linger = sec
}
// SetNoDelay controls whether the operating system should delay packet transmission in hopes of sending fewer packets (Nagle's algorithm). The default is true (no delay), meaning that data is sent as soon as possible after a Write.
func (client *TcpClient) SetNoDelay(noDelay bool) {
client.noDelay = noDelay
}
// TLSClientConfig returns the Config structure used to configure a TLS client
func (client *TcpClient) TLSClientConfig() *tls.Config {
return client.tlsConfig
}
// SetTLSClientConfig sets the Config structure used to configure a TLS client
func (client *TcpClient) SetTLSClientConfig(config *tls.Config) {
client.tlsConfig = config
}
// SendAndReceive send and receive the data
func (t *tcpTransporter) SendAndReceive(uri string, odata []byte) (idata []byte, err error) {
connEntry := t.ConnPool.Get(uri)
defer func() {
if err != nil {
connEntry.Close()
t.ConnPool.Free(connEntry)
}
}()
begin:
conn := connEntry.Get()
if conn == nil {
var u *url.URL
if u, err = url.Parse(uri); err != nil {
return nil, err
}
var tcpaddr *net.TCPAddr
if tcpaddr, err = net.ResolveTCPAddr(u.Scheme, u.Host); err != nil {
return nil, err
}
if conn, err = net.DialTCP("tcp", nil, tcpaddr); err != nil {
return nil, err
}
if t.keepAlive != nil {
if err = conn.(*net.TCPConn).SetKeepAlive(t.keepAlive.(bool)); err != nil {
return nil, err
}
}
if t.keepAlivePeriod != nil {
if kap, ok := conn.(iKeepAlivePeriod); ok {
if err = kap.SetKeepAlivePeriod(t.keepAlivePeriod.(time.Duration)); err != nil {
return nil, err
}
}
}
if t.linger != nil {
if err = conn.(*net.TCPConn).SetLinger(t.linger.(int)); err != nil {
return nil, err
}
}
if t.noDelay != nil {
if err = conn.(*net.TCPConn).SetNoDelay(t.noDelay.(bool)); err != nil {
return nil, err
}
}
if t.readBuffer != nil {
if err = conn.(*net.TCPConn).SetReadBuffer(t.readBuffer.(int)); err != nil {
return nil, err
}
}
if t.writeBuffer != nil {
if err = conn.(*net.TCPConn).SetWriteBuffer(t.writeBuffer.(int)); err != nil {
return nil, err
}
}
if t.tlsConfig != nil {
conn = tls.Client(conn, t.tlsConfig)
}
connEntry.Set(conn)
}
if t.timeout != nil {
if err = conn.SetDeadline(time.Now().Add(t.timeout.(time.Duration))); err != nil {
err = nil
connEntry.Close()
t.ConnPool.Free(connEntry)
connEntry = t.ConnPool.Get(uri)
goto begin
}
}
if t.writeTimeout != nil {
if err = conn.SetWriteDeadline(time.Now().Add(t.writeTimeout.(time.Duration))); err != nil {
return nil, err
}
}
if err = sendDataOverStream(conn, odata); err != nil {
return nil, err
}
if t.readTimeout != nil {
if err = conn.SetReadDeadline(time.Now().Add(t.readTimeout.(time.Duration))); err != nil {
return nil, err
}
}
if idata, err = receiveDataOverStream(conn); err != nil {
return nil, err
}
t.ConnPool.Free(connEntry)
return idata, nil
}