How can I know when two servers are ready to get requests?
I have two servers
router := createServer()
loginServer := createLoginServerMock()
servLogin := &http.Server{
Addr: ":9333",
Handler: loginServer,
}
testServer := &http.Server{
Addr: ":9444",
Handler: router,
}
loginServer.ListenAndServe()
testServer.ListenAndServe()
And I want to send request on both of them after they created? How can I detect that?
go gin
edited Nov 21 '18 at 15:52
Flimzy
37.8k96497
asked Nov 21 '18 at 14:02
Юра ПанаринЮра Панарин
42449
add a comment |
I have two servers
router := createServer()
loginServer := createLoginServerMock()
servLogin := &http.Server{
Addr: ":9333",
Handler: loginServer,
}
testServer := &http.Server{
Addr: ":9444",
Handler: router,
}
loginServer.ListenAndServe()
testServer.ListenAndServe()
And I want to send request on both of them after they created? How can I detect that?
go gin
edited Nov 21 '18 at 15:52
Flimzy
37.8k96497
asked Nov 21 '18 at 14:02
Юра ПанаринЮра Панарин
42449
add a comment |
I have two servers
router := createServer()
loginServer := createLoginServerMock()
servLogin := &http.Server{
Addr: ":9333",
Handler: loginServer,
}
testServer := &http.Server{
Addr: ":9444",
Handler: router,
}
loginServer.ListenAndServe()
testServer.ListenAndServe()
And I want to send request on both of them after they created? How can I detect that?
go gin
edited Nov 21 '18 at 15:52
Flimzy
37.8k96497
asked Nov 21 '18 at 14:02
Юра ПанаринЮра Панарин
42449
I have two servers
router := createServer()
loginServer := createLoginServerMock()
servLogin := &http.Server{
Addr: ":9333",
Handler: loginServer,
}
testServer := &http.Server{
Addr: ":9444",
Handler: router,
}
loginServer.ListenAndServe()
testServer.ListenAndServe()
And I want to send request on both of them after they created? How can I detect that?
go gin
go gin
edited Nov 21 '18 at 15:52
Flimzy
37.8k96497
asked Nov 21 '18 at 14:02
Юра ПанаринЮра Панарин
42449
edited Nov 21 '18 at 15:52
Flimzy
37.8k96497
asked Nov 21 '18 at 14:02
Юра ПанаринЮра Панарин
42449
edited Nov 21 '18 at 15:52
Flimzy
37.8k96497
edited Nov 21 '18 at 15:52
Flimzy
37.8k96497
edited Nov 21 '18 at 15:52
Flimzy
37.8k96497
37.8k96497
asked Nov 21 '18 at 14:02
Юра ПанаринЮра Панарин
42449
asked Nov 21 '18 at 14:02
Юра ПанаринЮра Панарин
42449
asked Nov 21 '18 at 14:02
Юра ПанаринЮра Панарин
42449
42449
add a comment |
add a comment |
3 Answers
3
active
oldest
votes
ListenAndServe has no feedback mechanism to let you know when the server is ready. You have to create the listener yourself and pass it to Server.Serve:
loginListener, err := net.Listen("tcp", ":9333")
if err != nil {
// TODO: handle err
}
testListener, err := net.Listen("tcp", ":9444")
if err != nil {
// TODO: handle err
}
// You may already start sending requests now. They will just wait until
// the servers call Accept on their respective listener (i.e. shortly after
// Serve is called).
servLogin := &http.Server{Handler: loginServer}
testServer := &http.Server{Handler: router}
go func() { log.Fatal(servLogin.Serve(loginListener)) }()
go func() { log.Fatal(testServer.Serve(testListener)) }()
answered Nov 21 '18 at 14:31
PeterPeter
15.8k42332
add a comment |
ListenAndServe() will return an error when create server failed. Just handle it to known server start success or not. I can see your coding will only start login server while test server be hanging. Let's try
go func() {
log.Fatal(loginServer.ListenAndServe())
}
log.Fatal(testServer.ListenAndServe())
answered Nov 21 '18 at 14:13
KibGzrKibGzr
1,466610
add a comment |
The program will wait at 1st ListenAndServe() until any error occurred. Because the ListenAndServe() method runs forever. So your second server will never started until the execution goes to the next ListenAndServe(). So use go in front of the 1st server's statement:
router := createServer()
loginServer := createLoginServerMock()
go func() {
if err := http.ListenAndServe(":9333", loginServer); err != nil {
log.Fatal("login server err: ", err)
}
}()
if err := http.ListenAndServe(":9444", router); err != nil {
log.Fatal("test server err: ", err)
}
Then access your loginServer at http://localhost:9333 and testServer at http://localhost:9444.
answered Nov 21 '18 at 14:14
Shudipta SharmaShudipta Sharma
1,029312
Problem not in start, I wanna send request on two that servers and sometimes they not running both
– Юра Панарин
Nov 21 '18 at 14:22
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
ListenAndServe has no feedback mechanism to let you know when the server is ready. You have to create the listener yourself and pass it to Server.Serve:
loginListener, err := net.Listen("tcp", ":9333")
if err != nil {
// TODO: handle err
}
testListener, err := net.Listen("tcp", ":9444")
if err != nil {
// TODO: handle err
}
// You may already start sending requests now. They will just wait until
// the servers call Accept on their respective listener (i.e. shortly after
// Serve is called).
servLogin := &http.Server{Handler: loginServer}
testServer := &http.Server{Handler: router}
go func() { log.Fatal(servLogin.Serve(loginListener)) }()
go func() { log.Fatal(testServer.Serve(testListener)) }()
answered Nov 21 '18 at 14:31
PeterPeter
15.8k42332
add a comment |
ListenAndServe has no feedback mechanism to let you know when the server is ready. You have to create the listener yourself and pass it to Server.Serve:
loginListener, err := net.Listen("tcp", ":9333")
if err != nil {
// TODO: handle err
}
testListener, err := net.Listen("tcp", ":9444")
if err != nil {
// TODO: handle err
}
// You may already start sending requests now. They will just wait until
// the servers call Accept on their respective listener (i.e. shortly after
// Serve is called).
servLogin := &http.Server{Handler: loginServer}
testServer := &http.Server{Handler: router}
go func() { log.Fatal(servLogin.Serve(loginListener)) }()
go func() { log.Fatal(testServer.Serve(testListener)) }()
answered Nov 21 '18 at 14:31
PeterPeter
15.8k42332
add a comment |
ListenAndServe has no feedback mechanism to let you know when the server is ready. You have to create the listener yourself and pass it to Server.Serve:
loginListener, err := net.Listen("tcp", ":9333")
if err != nil {
// TODO: handle err
}
testListener, err := net.Listen("tcp", ":9444")
if err != nil {
// TODO: handle err
}
// You may already start sending requests now. They will just wait until
// the servers call Accept on their respective listener (i.e. shortly after
// Serve is called).
servLogin := &http.Server{Handler: loginServer}
testServer := &http.Server{Handler: router}
go func() { log.Fatal(servLogin.Serve(loginListener)) }()
go func() { log.Fatal(testServer.Serve(testListener)) }()
answered Nov 21 '18 at 14:31
PeterPeter
15.8k42332
ListenAndServe has no feedback mechanism to let you know when the server is ready. You have to create the listener yourself and pass it to Server.Serve:
loginListener, err := net.Listen("tcp", ":9333")
if err != nil {
// TODO: handle err
}
testListener, err := net.Listen("tcp", ":9444")
if err != nil {
// TODO: handle err
}
// You may already start sending requests now. They will just wait until
// the servers call Accept on their respective listener (i.e. shortly after
// Serve is called).
servLogin := &http.Server{Handler: loginServer}
testServer := &http.Server{Handler: router}
go func() { log.Fatal(servLogin.Serve(loginListener)) }()
go func() { log.Fatal(testServer.Serve(testListener)) }()
answered Nov 21 '18 at 14:31
PeterPeter
15.8k42332
answered Nov 21 '18 at 14:31
PeterPeter
15.8k42332
answered Nov 21 '18 at 14:31
PeterPeter
15.8k42332
answered Nov 21 '18 at 14:31
PeterPeter
15.8k42332
15.8k42332
add a comment |
add a comment |
ListenAndServe() will return an error when create server failed. Just handle it to known server start success or not. I can see your coding will only start login server while test server be hanging. Let's try
go func() {
log.Fatal(loginServer.ListenAndServe())
}
log.Fatal(testServer.ListenAndServe())
answered Nov 21 '18 at 14:13
KibGzrKibGzr
1,466610
add a comment |
ListenAndServe() will return an error when create server failed. Just handle it to known server start success or not. I can see your coding will only start login server while test server be hanging. Let's try
go func() {
log.Fatal(loginServer.ListenAndServe())
}
log.Fatal(testServer.ListenAndServe())
answered Nov 21 '18 at 14:13
KibGzrKibGzr
1,466610
add a comment |
ListenAndServe() will return an error when create server failed. Just handle it to known server start success or not. I can see your coding will only start login server while test server be hanging. Let's try
go func() {
log.Fatal(loginServer.ListenAndServe())
}
log.Fatal(testServer.ListenAndServe())
answered Nov 21 '18 at 14:13
KibGzrKibGzr
1,466610
ListenAndServe() will return an error when create server failed. Just handle it to known server start success or not. I can see your coding will only start login server while test server be hanging. Let's try
go func() {
log.Fatal(loginServer.ListenAndServe())
}
log.Fatal(testServer.ListenAndServe())
answered Nov 21 '18 at 14:13
KibGzrKibGzr
1,466610
answered Nov 21 '18 at 14:13
KibGzrKibGzr
1,466610
answered Nov 21 '18 at 14:13
KibGzrKibGzr
1,466610
answered Nov 21 '18 at 14:13
KibGzrKibGzr
1,466610
1,466610
add a comment |
add a comment |
The program will wait at 1st ListenAndServe() until any error occurred. Because the ListenAndServe() method runs forever. So your second server will never started until the execution goes to the next ListenAndServe(). So use go in front of the 1st server's statement:
router := createServer()
loginServer := createLoginServerMock()
go func() {
if err := http.ListenAndServe(":9333", loginServer); err != nil {
log.Fatal("login server err: ", err)
}
}()
if err := http.ListenAndServe(":9444", router); err != nil {
log.Fatal("test server err: ", err)
}
Then access your loginServer at http://localhost:9333 and testServer at http://localhost:9444.
answered Nov 21 '18 at 14:14
Shudipta SharmaShudipta Sharma
1,029312
Problem not in start, I wanna send request on two that servers and sometimes they not running both
– Юра Панарин
Nov 21 '18 at 14:22
add a comment |
The program will wait at 1st ListenAndServe() until any error occurred. Because the ListenAndServe() method runs forever. So your second server will never started until the execution goes to the next ListenAndServe(). So use go in front of the 1st server's statement:
router := createServer()
loginServer := createLoginServerMock()
go func() {
if err := http.ListenAndServe(":9333", loginServer); err != nil {
log.Fatal("login server err: ", err)
}
}()
if err := http.ListenAndServe(":9444", router); err != nil {
log.Fatal("test server err: ", err)
}
Then access your loginServer at http://localhost:9333 and testServer at http://localhost:9444.
answered Nov 21 '18 at 14:14
Shudipta SharmaShudipta Sharma
1,029312
Problem not in start, I wanna send request on two that servers and sometimes they not running both
– Юра Панарин
Nov 21 '18 at 14:22
add a comment |
The program will wait at 1st ListenAndServe() until any error occurred. Because the ListenAndServe() method runs forever. So your second server will never started until the execution goes to the next ListenAndServe(). So use go in front of the 1st server's statement:
router := createServer()
loginServer := createLoginServerMock()
go func() {
if err := http.ListenAndServe(":9333", loginServer); err != nil {
log.Fatal("login server err: ", err)
}
}()
if err := http.ListenAndServe(":9444", router); err != nil {
log.Fatal("test server err: ", err)
}
Then access your loginServer at http://localhost:9333 and testServer at http://localhost:9444.
answered Nov 21 '18 at 14:14
Shudipta SharmaShudipta Sharma
1,029312
The program will wait at 1st ListenAndServe() until any error occurred. Because the ListenAndServe() method runs forever. So your second server will never started until the execution goes to the next ListenAndServe(). So use go in front of the 1st server's statement:
router := createServer()
loginServer := createLoginServerMock()
go func() {
if err := http.ListenAndServe(":9333", loginServer); err != nil {
log.Fatal("login server err: ", err)
}
}()
if err := http.ListenAndServe(":9444", router); err != nil {
log.Fatal("test server err: ", err)
}
Then access your loginServer at http://localhost:9333 and testServer at http://localhost:9444.
answered Nov 21 '18 at 14:14
Shudipta SharmaShudipta Sharma
1,029312
edited Nov 21 '18 at 15:07
answered Nov 21 '18 at 14:14
Shudipta SharmaShudipta Sharma
1,029312
answered Nov 21 '18 at 14:14
Shudipta SharmaShudipta Sharma
1,029312
answered Nov 21 '18 at 14:14
Shudipta SharmaShudipta Sharma
1,029312
1,029312
Problem not in start, I wanna send request on two that servers and sometimes they not running both
– Юра Панарин
Nov 21 '18 at 14:22
add a comment |
Problem not in start, I wanna send request on two that servers and sometimes they not running both
– Юра Панарин
Nov 21 '18 at 14:22
Problem not in start, I wanna send request on two that servers and sometimes they not running both
– Юра Панарин
Nov 21 '18 at 14:22
Problem not in start, I wanna send request on two that servers and sometimes they not running both
– Юра Панарин
Nov 21 '18 at 14:22
add a comment |
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