CODEWITHSUNDEEP
capachesockets
overexchange
overexchange

Reputation: 1

Does virtual host root directory get picked after accept() call?

Apache2 configuration(below) of two virtual hosts on same IP in file /etc/apache2/sites-available/000-default.conf

# Ensure that Apache listens on port 80
Listen 80
<VirtualHost *:80>
    DocumentRoot "/www/example1"
    ServerName www.example.com

    # Other directives here
</VirtualHost>

<VirtualHost *:80>
    DocumentRoot "/www/example2"
    ServerName www.example.org

    # Other directives here
</VirtualHost>

Binary apache2 will be listening , something like, listen(listenFD, 5).

listenFD should look like,

retval = bind(listenFD, (struct sockaddr *) &servaddr, sizeof(servaddr)); where servaddr.sin_port = htons(80);

With given accept() call syntax,

connfd = accept(listenFD, (struct sockaddr *) &cliaddr, &clilen);

Question:

Does httpd server decide picking corresponding virtual host's DocumentRoot after accept() call? Is virtual host pick an application layer logic?

Upvotes: 0

Views: 27

Answers (1)

President James K. Polk
President James K. Polk

Reputation: 41967

The virtual host cannot be resolved until the Host: HTTP header field is parsed by the server, which is obviously after accept() and after some amount of data has been read on the connected socket.

Upvotes: 3

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