Communication between services running on localhost and docker
I have 2 services and 1 java application running on my machine, let's call them A, B, C:
A: is a service running on port 39000 and is running inside a docker container.
B: is a service running on port 49000, on the localhost.
C: is an application running on the localhost.
Application C communicates with both service A and B. It also establishes a handshake with both the services before starting.
Problem: C is able to establish the handshake with A but not with B.
Exception: java.net.ConnectException for localhost:49000
More info:
1) A curl request from my machine to Service B is served correctly.
2) I started seeing this issue after a docker upgrade. My current docker version is: Docker version 18.09.0, build 4d60db4
3) lsof | grep 39000 :
com.docke 3503 cghai 20u IPv4 0x776c731898d7eabd 0t0 TCP *:39000 (LISTEN)
com.docke 3503 cghai 21u IPv6 0x776c731893ca834d 0t0 TCP localhost:39000 (LISTEN)
4) lsof | grep 49000 :
java 3260 cghai 7u IPv6 0x776c731893cb634d 0t0 TCP *:49000 (LISTEN)
docker service connectexception
asked Nov 26 '18 at 6:33
Charanjit GhaiCharanjit Ghai
12
add a comment |
I have 2 services and 1 java application running on my machine, let's call them A, B, C:
A: is a service running on port 39000 and is running inside a docker container.
B: is a service running on port 49000, on the localhost.
C: is an application running on the localhost.
Application C communicates with both service A and B. It also establishes a handshake with both the services before starting.
Problem: C is able to establish the handshake with A but not with B.
Exception: java.net.ConnectException for localhost:49000
More info:
1) A curl request from my machine to Service B is served correctly.
2) I started seeing this issue after a docker upgrade. My current docker version is: Docker version 18.09.0, build 4d60db4
3) lsof | grep 39000 :
com.docke 3503 cghai 20u IPv4 0x776c731898d7eabd 0t0 TCP *:39000 (LISTEN)
com.docke 3503 cghai 21u IPv6 0x776c731893ca834d 0t0 TCP localhost:39000 (LISTEN)
4) lsof | grep 49000 :
java 3260 cghai 7u IPv6 0x776c731893cb634d 0t0 TCP *:49000 (LISTEN)
docker service connectexception
asked Nov 26 '18 at 6:33
Charanjit GhaiCharanjit Ghai
12
Can you replace the term "localhost" with "physical host" where it's appropriate, and withlocalhostwhere you specifically mean 127.0.0.1? (Of note A's notion oflocalhostis different from B's or C's.)
– David Maze
Nov 26 '18 at 12:40
add a comment |
I have 2 services and 1 java application running on my machine, let's call them A, B, C:
A: is a service running on port 39000 and is running inside a docker container.
B: is a service running on port 49000, on the localhost.
C: is an application running on the localhost.
Application C communicates with both service A and B. It also establishes a handshake with both the services before starting.
Problem: C is able to establish the handshake with A but not with B.
Exception: java.net.ConnectException for localhost:49000
More info:
1) A curl request from my machine to Service B is served correctly.
2) I started seeing this issue after a docker upgrade. My current docker version is: Docker version 18.09.0, build 4d60db4
3) lsof | grep 39000 :
com.docke 3503 cghai 20u IPv4 0x776c731898d7eabd 0t0 TCP *:39000 (LISTEN)
com.docke 3503 cghai 21u IPv6 0x776c731893ca834d 0t0 TCP localhost:39000 (LISTEN)
4) lsof | grep 49000 :
java 3260 cghai 7u IPv6 0x776c731893cb634d 0t0 TCP *:49000 (LISTEN)
docker service connectexception
asked Nov 26 '18 at 6:33
Charanjit GhaiCharanjit Ghai
12
I have 2 services and 1 java application running on my machine, let's call them A, B, C:
A: is a service running on port 39000 and is running inside a docker container.
B: is a service running on port 49000, on the localhost.
C: is an application running on the localhost.
Application C communicates with both service A and B. It also establishes a handshake with both the services before starting.
Problem: C is able to establish the handshake with A but not with B.
Exception: java.net.ConnectException for localhost:49000
More info:
1) A curl request from my machine to Service B is served correctly.
2) I started seeing this issue after a docker upgrade. My current docker version is: Docker version 18.09.0, build 4d60db4
3) lsof | grep 39000 :
com.docke 3503 cghai 20u IPv4 0x776c731898d7eabd 0t0 TCP *:39000 (LISTEN)
com.docke 3503 cghai 21u IPv6 0x776c731893ca834d 0t0 TCP localhost:39000 (LISTEN)
4) lsof | grep 49000 :
java 3260 cghai 7u IPv6 0x776c731893cb634d 0t0 TCP *:49000 (LISTEN)
docker service connectexception
docker service connectexception
asked Nov 26 '18 at 6:33
Charanjit GhaiCharanjit Ghai
12
asked Nov 26 '18 at 6:33
Charanjit GhaiCharanjit Ghai
12
edited Nov 26 '18 at 18:26
Charanjit Ghai
asked Nov 26 '18 at 6:33
Charanjit GhaiCharanjit Ghai
12
asked Nov 26 '18 at 6:33
Charanjit GhaiCharanjit Ghai
12
asked Nov 26 '18 at 6:33
Charanjit GhaiCharanjit Ghai
12
12
Can you replace the term "localhost" with "physical host" where it's appropriate, and withlocalhostwhere you specifically mean 127.0.0.1? (Of note A's notion oflocalhostis different from B's or C's.)
– David Maze
Nov 26 '18 at 12:40
add a comment |
Can you replace the term "localhost" with "physical host" where it's appropriate, and withlocalhostwhere you specifically mean 127.0.0.1? (Of note A's notion oflocalhostis different from B's or C's.)
– David Maze
Nov 26 '18 at 12:40
Can you replace the term "localhost" with "physical host" where it's appropriate, and with
localhost where you specifically mean 127.0.0.1? (Of note A's notion of localhost is different from B's or C's.)– David Maze
Nov 26 '18 at 12:40
Can you replace the term "localhost" with "physical host" where it's appropriate, and with
localhost where you specifically mean 127.0.0.1? (Of note A's notion of localhost is different from B's or C's.)– David Maze
Nov 26 '18 at 12:40
add a comment |
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Can you replace the term "localhost" with "physical host" where it's appropriate, and with
localhostwhere you specifically mean 127.0.0.1? (Of note A's notion oflocalhostis different from B's or C's.)– David Maze
Nov 26 '18 at 12:40